bluuebunny/crossref_metadata_2025 huggingface dataset:
Generasi Z Berbisik : Melestarikan Bangunan Cagar Budaya di Kota Metro Lampung
Authors: Mukholidah Nahrul - , Hamer Wellfarina
Published: February 2025

Penelitian ini bertujuan untuk mengedukasi generasi muda khususnya Gen Z agar berupaya bersama masyarakat serta pihak lainnya untuk memaksimalkan pemanfaatan bangunan cagar budaya salah satunya rumah informasi sejarah dokter swoning, klinik Santa Maria dan Sumur Bandung yang diyakini masyarakat ke-3 bangunan ini merupakan kesatuan dari cikal bakal terbentuknya daerah Metro yang bermula dari Trimurjo. Metode yang digunakan dalam penelitian ini adalah kualitatif deskriptif. Hal ini disebabkan karena sumber data yang telah didapatkan melalui wawancara, dokumentasi dan observasi. Kota ini juga terlahir dari salah satu perjalananan politik etis yaitu migrasi atau perpindahan penduduk dari jawa menuju ke lampung. Hal tersebut sering kita beri dengan istilah kolonisasi yang ada di Metro. Kolonisasi di Metro bermula dari kedatangan para kolonis jawa yang melakukan transmigrasi di Lampung.. Bangunan cagar budaya adalah salah satu warisan nenek moyang yang harus dijaga bersama. Melalui tangan generasi Z yang saling membahu untuk melestarikan serta memberikan edukasi terhadap masyarakat sekitar dan kalangan lain. Tentu hal tersebut mampu memberikan dampak yang signifikan, terutama dalam menyebar luaskan kesadaran sejarah khususnya di kota Metro Lampung. Melalui beberapa bangunan sejarah yang sudah diresmikan menjadi bangunan cagar budaya, seperti Rumah Informasi Sejarah Dokter Swoning, Rumah Sakit Santa Maria dan Museum digital Santa Maria, serta Sumur Bandung yang menjadi salah satu kearifan lokal sehingga sumur tersebut dijadikan pula menjadi sumur legendaris di Kota Metro.
Pernikahan Dini Pada Remaja: Studi Analisis di Desa Rukti Basuki
Authors: Winata Vina Pandu , Purwasih Atik
Published: February 2025

Pernikahan dini dapat menimbulkan dampak, karena belum matangnya psikologis menyebabkan permasalahan dalam berumah tangga. Penelitian ini bertujuan untuk mengetahui faktor yang mempengaruhi pernikahan dini pada remaja di Desa Rukti Basuki Kecamatan Rumbia Kabupaten Lampung Tengah serta untuk mengetahui dampak pernikahan usia dini yang dirasakan remaja di Desa tersebut. Jenis penelitian yang digunakan adalah penelitian lapangan (Field Reaserch). Teknik pengumpulan data yaitu wawancara, observasi dan dokumentasi. Sumber data yang digunakan yaitu sumber data primer yaitu pelaku pernikahan dini, orang tua pelaku pernikahan dini dan tokoh masyarakat. Sumber data sekunder dari buku, jurnal dan internet. Teknik penjamin keabsahan data dalam penelitian ini yaitu triangulasi sumber dan triangulasi teknik. Teknik analisis data yang digunakan berdasarkan pendapat Miles and Huberman yaitu pengumpulan data, reduksi data, penyajian data dan verifikasi/menyimpulkan data. Berdasarkan hasil penelitian yang telah dilakukan dapat disimpulkan bahwa: 1) Faktor yang mempengaruhi pernikahan dini pada remaja di Desa Rukti Basuki adalah: faktor ekonomi, faktor pergaulan bebas dan faktor Pendidikan. 2) dampak pernikahan dini yang dirasakan remaja di Desa Rukti Basuki adalah: dengan dampak positif meringankan beban orangtua dan menjauhkan dari perbuatan yang dilarang Allah SWT serta dampak negatifnya perceraian, kekerasan dalam rumah tangga (KDRT), dewasa sebelum waktunya (dewasa prematur) dan kualitas pendidikan menurun.
The Features of Cog Engagement’s Functioning of Gear Hydraulic Machines
Authors:   Central Ukrainian National Technical University, Kuleshkov Yuriy , Rudenko Timofey ,   Central Ukrainian National Technical University, Krasota Mikhail ,   Central Ukrainian National Technical University, Shtompel Yevheniy ,   Central Ukrainian National Technical University
Published: February 2025

The purpose of this paper is to establish the relationship between the angle of rotation of the driving gear of a gear hydraulic machine and the angles of rotation of the radii connecting the axes of rotation of the gears with the meshing point, as well as to take into account the slippage of involute profiles of gear teeth relative to each other in mathematical models of the movement of working fluid in gear hydraulic machines.
To study the peculiarities of slipping of involute profiles, the problem of determining the dependence of the angles of rotation of the radii connecting the axes of rotation of the gears with the meshing point on the angle of rotation of the driving gear or the coordinate of the position of the meshing point of the teeth T on the meshing line was set and successfully solved.
The dependences of the lengths of the radii connecting the axes of rotation of the gears with the meshing point on the angle of rotation of the drive gear or the coordinate of the position of the tooth meshing point on the meshing line were found.
The obtained expressions will improve the existing mathematical models of the working fluid motion, which will make it possible to study a number of processes occurring in gear hydraulic machines.
The analysis of scientific and technical information sources showed that existing models of the working process of gear hydraulic machines do not take into account the feature of involute gearing, which consists in the fact that involute tooth profiles in their movement mutually slip over each other.
To study this feature, the task of determining the dependence of the angles of rotation and and radii and connecting the axes of rotation of the gears with the meshing point T on the angle of rotation of the drive gear or the coordinate of the position of the meshing point of the teeth T on the meshing line was set and successfully solved. The slippage of the involute profiles of the gear teeth is taken into account.
Improvement of the Working Bodies of Construction and Road Machines Using Rubber Elements
Authors:   Central Ukrainian National Technical University, Karpushyn Serhii , Nastoiashchyi Vladyslav ,   Central Ukrainian National Technical University, Tykhyi Andrii ,   Central Ukrainian National Technical University, Hozbenko Yevhen ,   Central Ukrainian National Technical University, Rusachenko Oleksandr ,   SHEI Pryazovskyi State Technical University
Published: February 2025

The purpose of the research is to develop technical proposals for improving the working bodies of construction and road machines that interact during their working cycle with a mineral environment (soil, ore, lumpy rock, concrete, asphalt concrete), organic environment at low temperatures (snow, ice, and their mixtures with a mineral environment) using rubber, rubber-fabric, rubber-metal, rubber-concrete and other composite rubber compounds.
The article presents a number of technical solutions that include rubber elements of the working bodies of construction and road machines that are intended for interaction with a mineral natural environment, such as soil, rock, ore, mineral, snow cover, ice formations, agricultural grains. Most characteristics of rubber elastomers have an advantage over classic metal ones in terms of application in the working bodies of construction machines, as they contribute to the elimination of classic disadvantages inherent in these machines (heavy weight, noise, fatigue failure, sticking and freezing of the mineral environment on the elements of the working equipment). These characteristics include: high elasticity, or resiliency; the ability to repeatedly change its shape with a return to its original state; the ability to silently absorb shocks; high wear resistance and corrosion resistance to the action of water and chemically aggressive environment. The article presents a selective and, in the authors' opinion, successful application of rubber and composite elements in the working equipment of a mechanized construction fleet of machines and equipment. The effectiveness of the application of rubber elements in working equipment is analyzed using the example of a wide range of construction machines according to the criteria: wear, sticking, freezing, damping, corrosion resistance, protection of metal elements of structures from plastic deformations.
It has been found that modern elastomeric materials have a wide range of special properties and have significant reserves for eliminating such significant shortcomings of the working equipment of construction and road machines, as: sticking and freezing of minerals to the working metal surfaces, increased wear, destruction of metal structures of working bodies as a result of high dynamic shock loads. Exploitation of elastomeric materials, taking into account their shelf life (7-10 years), which is comparable to the resource of construction machines, is appropriate for use for all types and classes of working bodies. The use of elastomers in the working equipment of construction and road machines is the most effective for bucket-type working equipment.
Justification of the Design Parameters of the Additional Trimmer with an Active Knife
Authors:   Ternopil Ivan Puluj National Technical University, Okunskiy Oleksandr , Tson Oleg ,   Ternopil Ivan Puluj National Technical University, Tson Anna ,   Ternopil Ivan Puluj National Technical University, Leshchuk Roman ,   Ternopil Ivan Puluj National Technical University, Yuriev Oleksandr ,   Ternopil Ivan Puluj National Technical University
Published: February 2025

To substantiate the parameters of the top-dressing module during its design and development stage, it is advisable to conduct a theoretical analysis of possible variants for performing the technological operation of removing plant components from root crops. This will allow for the determination of technological parameters for the operation of the top-dressing module, including optimal movement speeds, angles of installation, and positioning of flat knives, ensuring maximum cleaning efficiency with minimal product loss.
Based on the analysis of research into the technological process of additional cleaning of top residues from root crop heads, it has been established that there is a need for more advanced mathematical models of the interaction between the cutting organ and the root crops. These models should incorporate the analysis of kinematic and structural parameters of the top-dressing machine's working organs. Implementing such models will allow for more accurate forecasting of the performance of various designs and settings of working organs, leading to improved cleaning quality of root crops, reduced product losses, and lower maintenance costs. A calculation scheme has been developed to determine the structural parameters of a beet top trimmer with an active flat knife.
Analytical dependencies have been provided to coordinate the movement time of the active knife in both horizontal and vertical planes. An algorithm has been proposed to determine the required length of the active knife for the top-dressing trimmer, which ensures that the technological operation of removing top residues is performed in accordance with agronomic requirements.
Engineering method of studying the kinematic parameters of the working body of the potato harvesting machine
Authors:   Ternopil Ivan Puluj National Technical University, Babii Andrii , Holovetskyi Ivan ,   Ternopil Ivan Puluj National Technical University
Published: February 2025

The work provides an engineering methodology for studying the kinematic parameters of the drive mechanism of the ploughshare of a single-row potato harvesting machine. The development of a new design of the potato harvesting machine led to a special approach to studying its kinematic parameters. The essence of the engineering methodology is that it is based on the graphical-analytical method of plans in the study of kinematic mechanisms. For the physical design of the drive mechanism of the potato harvesting machine, theoretical descriptions were made and plans of velocities and accelerations were built, which allows the researcher to obtain the specified kinematic parameters for any points of the links of this mechanism. The paper obtained a number of values of kinematic parameters that characterize the operation of this mechanism and on the basis of which the technological efficiency of the ploughshare of the potato harvesting machine is analyzed.
The Recycling of Car Tires in the Ukrainian Perspective
Authors:   Cherkassy State Technological University, Shlonchak Ihor , Batrachenko Oleksandr ,   Cherkassy State Technological University
Published: February 2025

The purpose of the work is to analyze the methods of recycling tires in the Ukrainian perspective, taking into account the world experience of recycling car tires. At the same time, a rational version of the tire recycling method for Ukraine is taken into account.
The article analyzes the current state of recycling car tires in the Ukrainian perspective, taking into account world experience. An analysis of the methods of recycling used car tires was carried out, taking into account domestic and foreign research. The global problem of collection and disposal of used car tires is shown. It is emphasized that the latter are the main type of rubber waste in the world. The article found that the most common methods of disposal of worn car tires are divided into physical and chemical. The advantages and disadvantages of the main methods of processing rubber waste, in particular car tires, are presented.
Summarizing the research, several main conclusions can be drawn. First, the most common ways of disposing of used car tires are divided into physical and chemical. Secondly, the most promising are the technologies that allow separating the main components of car tires: rubber, steel, textiles. Third, it can be assumed that there is no method or technology that would allow the process of recycling car tires to be carried out with low costs and minimizing the harmful impact on the atmosphere.
Аnalysis of the Impact of Axle Loads on the Condition of Roads
Authors:   Ternopil Ivan Puluj National Technical University, Lyashuk Oleg , Plekan Uliana ,   Ternopil Ivan Puluj National Technical University, Tson Oleg ,   Ternopil Ivan Puluj National Technical University, Vovk Yurii ,   Ternopil Ivan Puluj National Technical University, Rozhko Nataliya ,   Ternopil Ivan Puluj National Technical University
Published: February 2025

The purpose of this study is to highlight the key issues related to the destructive impact of the mass of freight vehicles on Ukraine's highways. The paper examines the essence of axle loads, provides permissible standards for individual axles of freight vehicles, and analyzes the current composition of freight vehicles and their impact on road surfaces. It also reviews technical means and methods for controlling weight regulations, such as weigh stations, electronic control systems, and underground weigh sensors.
The issue of multi-axle vehicles, which are used to reduce the load on individual axles, is explored, but it is noted that these vehicles do not always solve the problem of excessive road wear. Multi-axle vehicles may formally meet regulatory standards, but they do not address the environmental impact or the increased risk of accidents. It is also important to consider the real operating conditions of roads, including traffic intensity and climate conditions, to ensure the longevity of road surfaces.
One of the key points discussed is the development of an independent quality control system in the road sector, which can help improve road conditions and enhance traffic safety. The paper proposes a step-by-step approach to analyzing the impact of axle loads on highways, which includes determining the design load, analyzing the actual condition of roads, and using modern technologies to monitor vehicle weight.
Special attention is given to the importance of accurately calculating the axle load of vehicles to ensure the long-term operation of roads. It is noted that exceeding permissible axle loads can lead to significant infrastructure repair costs, road surface destruction, and an increased risk of accidents. It is essential that transport infrastructure is designed to meet modern weight regulations and that freight carriers comply with vehicle weight limits.
Impact of Delivery Mode on Breastfeeding Practices: A Prospective Cohort Study
Authors: Goel Meenal , Jaiswal Chhavi , Maheshwari Harsh , Chaudhary G.S. , Tripathi Janhavi
Published: February 2025

Background: Breastfeeding is crucial for infant health, providing optimal nutrition and immunity. The mode of delivery significantly influences breastfeeding practices, with Normal Vaginal Delivery (NVD) often enabling earlier initiation and exclusivity than Lower Segment Cesarean Section (LSCS). This study examines differences in breastfeeding initiation, exclusivity, and associated challenges between NVD and LSCS mothers at a tertiary healthcare facility. Methods: A prospective observational study was conducted at Government Medical College (GMC) Jalaun over seven months, including 623 mothers (320 NVD, 303 LSCS). Data were collected using a questionnaire on breastfeeding initiation, breastfeeding practices, and challenges at six weeks, 14 weeks, and six months postpartum. Results: Early breastfeeding initiation (in 1st hour) was significantly higher among NVD mothers (81.88%) compared to LSCS mothers (9.24%) (p < 0.01). LSCS mothers exhibited higher pre-lacteal feeding rates (73.60% vs. 12.19%) and reported more breastfeeding challenges, such as latching difficulties (42.24% vs. 24.06%) and low milk supply (43.23% vs. 22.81%) (p < 0.01). Exclusive breastfeeding rates remained consistently higher among NVD mothers across all follow-up points, with significant differences at six weeks, 14 weeks, and six months. Conclusions: The mode of delivery significantly impacts breastfeeding practices, with LSCS presenting greater challenges to early initiation and exclusivity. Tailored breastfeeding support for LSCS mothers, including immediate skin-to-skin contact and early lactation consultations, may help bridge these gaps, ultimately enhancing maternal and infant health outcomes.
Makna Budaya dalam Dongeng Humor Masyarakat Banten
Authors: M.A. Tihami
Published: February 2025

This article examines humour stories frequently told by the Bantenese. The main problems discussed here are: What kind of humour stories that spread among the Bantenese? What are the functions and meanings of the stories for the people? How do people understand and make use the stories? This article is the result of a set of fieldwork using ethnographic method with anthropological approach. In analyzing data, I use functional–structural approach. The methods used in collecting data are library research, participant observations, and in–depth interviews. Based on research findings, I conclude that there are at least 41 humour stories and 15 most popular themes. Meanwhile, based on its functions, there are at least 8 functions in the stories, namely as a set of advice pertaining moral values, as social critiques, to control attitude and behavior, to influnce people, to entertain, as tools to deal with boredom and stress, as tools to evaluate one’s mistakes, and as tools to select what is appropriate for the local society.
ЕФЕКТИВНІСТЬ ДОРОЩУВАННЯ ГІБРИДНИХ ПОРОСЯТ РІЗНОЇ МАСИ ЗА КОРЕКЦІЇ СИСТЕМИ ГОДІВЛІ
Authors: Хмельничий Леонтій Михайлович , Вечорка Вікторія Вікторівна , Павленко Юлія Миколаївна , Бордунова Ольга Георгієвна , Опара Віктор Олексійович , Майстренко Олексій Валерійович
Published: February 2025

Вивчалась продуктивність поросят на дорощувані залежно від способу зміни раціонів під час дорощування. Встановлено, що поросята яким здійснювалась диференційована годівля окремої групи залежно від фактичної маси, мали під кінець дорощування – на 1,19% менший падіж, на 0,17% меншу частку санітарного браку на 1,37% кращу збереженість. Виявили на 6,3% вищі середньодобові прирости на 2,2% відносні прирости, що спричинило покращення на 6,3% абсолютних приростів та на 4,9% маси тварин по завершенню дорощування. Визначено, що поросята яким коригування раціонів здійснювалось відповідно до середньої маси тварин в станку мали нижче на 10,70% середньодобове споживання першого найбільш дорогого корму, на 3,8% більше споживання другого престартерного комбікорму та на 16,3% найбільш дешевого стартового корму. За рахунок цього вони спожили за період дорощування на 13,3% менше першого престартеру, на 6,0% більше другого престартеру, і на 8,1% найбільш дешевого стартового корму порівняно з тваринами яким коригування раціону проводилось відповідно до середньої маси тварин по групі. В цілому поросята дослідної групи за період дорощування спожили на 2,9% більше кормів всіх рецептур, порівняно з аналогами контрольної групи. Доведена менша на 13,3% вартість спожитого першого престартерного комбікорму, не дивлячись на вищу на 6,0% вартість другого престартерного комбікорму і на 8,1% вартість стартерного корму яка спричинила зниження вартості всіх рецептур кормів на 0,8% у тварин яким зміну раціону проводили відповідно маси тварин у групі. Менша вартість першого престатреру посприяла зниженню на 0,8% кормової собівартості приросту, паралельно зі збільшенням на 4,9% маси поросят по завершенні дорощування та зниження на 6,1% собівартості одного кілограма приросту у тварин яким раціон корегували залежно від маси тварин в станку. Завдяки вищій інтенсивності росту і як результат більшій живі масі по закінченню дорощування вартість одного підсвинку на кінець дорощування у них виявилась на 4,9% вищою порівняно з аналогами яким раціон корегували залежно від середньої маси тварин в станку, що паралельно зі зниженням її собівартість посприяло підвищенню на 21,80% прибутку від вирощування однієї голови та покращенню на 18,06% рентабельності самого процесу дорощування.
INVESTMENT POTENTIAL OF THE AGRICULTURAL SECTOR IN THE CONTEXT OF STRUCTURAL TRANSFORMATIONS OF THE ECONOMYANALYTICAL ASSESSMENT AND DEVELOPMENT PROSPECTS
Authors:   Ivan Franko National University of Lviv, Zhevatchenko Vitaliy
Published: February 2025

The relevance of the article's topic is due to the significant structural transformations taking place in Ukraine's economy as a result of external and internal crisis factors, among which the military conflict occupies a special place. These transformations require a rethinking of the role of the agricultural sector, which remains an important element of the national economy, in particular in ensuring the country's food security. However, an important condition for the sustainable development of the agricultural sector is the effective attraction of investment resources, which allows for modernization of production, improvement of the technological base and ensuring competitiveness. In wartime, the agricultural sector is experiencing significant negative changes, including the destruction of infrastructure, a decrease in crop areas, a reduction in production capacity, and rising input prices. In addition, increased logistical difficulties, disruption of transport chains and reduced export opportunities create additional challenges for attracting investment in the sector. Thus, the decline in investment activity in the agricultural sector is one of the main challenges facing the country's economy. The article analyses the key problems associated with investing in the agricultural sector in the context of economic and social instability, examines the reasons for the decline in investment and its impact on agriculture, forestry and fisheries. The main focus of the study is to identify the factors that hinder investment activity, including the instability of the economic environment, rising resource costs, disruption of logistics processes and labour shortages. The article also discusses possible ways to overcome these barriers through investment support, restructuring of industries, modernization of production facilities, development of agricultural technologies and improvement of infrastructure. Particular attention is paid to creating favourable conditions for attracting public and international investment, in particular through innovative approaches to agricultural production, expanding markets, and improving environmental safety. Thus, the article examines not only the current problems of the agricultural sector, but also offers tools for restoring and developing investment activity, which is critical for Ukraine's economic revival in the post-crisis period.
Tasmanitachoides Erwin glabellus n. sp. from North Queensland, Australia, with a note on Tasmanitachoides lutus (Darlington) (Insecta, Coleoptera, Carabidae, Bembidiinae)
Authors:   Zoologische Staatssammlung, München, Germany, Baehr M.
Published: February 2025

A new species of the genus Tasmanitachoides Erwin from North Queensland is described: T. glabellus n. sp. The species belongs to the T. murrumbidgensis-group of species that is characterized by its distinctly impressed clypeus, but it is distinguished from all related species by its glabrous body surface. It is the first Tasmanitachoides from northern Australia to be found in rainforest on high mountains and has thus probably preserved the original habits of the genus that are still characteristic for those species living in southern temperate regions of Australia. Tasmanitachoides lutus (Darlington) so far known from the type locality in southern New South Wales and from the holotype only, is now recorded from eastern Victoria.
Life-history and ecological distribution of chameleons (Reptilia, Chamaeleonidae) from the rain forests of Nigeria: conservation implications
Authors:   Dept. of Biological Sciences, Rivers State Univ. of Science and Technology, Nigeria, Akani G. C. , Ogbalu O. ,   Dept. of Biological Sciences, Rivers State Univ. of Science and Technology, Nigeria, Luiselli L. ,   F. I. Z. V., Rome, Italy
Published: February 2025

Five species of chameleons were observed in the continuous forest zone of southern Nigeria: Chamaeleo gracilis gracilis Hallowell, 1842, Chamaeleo owenii Gray, 1831, Chamaeleo cristatus Stutchbury, 1837, Chamaeleo wiedersheimi Nieden, 1910, and Rhampholeon spectrum (Bucholz 1874). Many original locality records are presented for each species. One species is apparently rare and confined to montane habitats (C. wiedersheimi), another species is relatively common and its habitat is generalist (C. gracilis), and the other three species are vulnerable and limited to specific micro-habitats. Female R. spectrum had clutch sizes of two eggs each and exhibited a prolonged reproductive season with oviposition likely occurring during the late phase of the dry season. Females of both C. cristatus (clutch sizes: 11-14 eggs) and C. owenii (clutch sizes: 15-19 eggs) have a shorter reproductive season with oviposition occurring most probably at the interphase between the end of the wet season and the onset of the dry season, and female C. gracilis (clutch sizes: 14-23 eggs) appeared to exhibit two distinct oviposition periods (one at the interphase between the end of the wet season and the onset of the dry season, and one at the peak phase of the dry season). Diets of four sympatric species of chameleons consisted almost exclusively of arthropods. There were significant inter-group differences at either intra-specific level (with the females of the two best studied species, i.e. R. spectrum and C. gracilis, having a wider food niche breadth than males) or inter-specific level (with a continuum of dietary specialization from the less generalist (C. cristatus) to the more generalist (C. gracilis). However, ‘thread-trailing’ experiments indicated that activity patterns of Nigerian chameleons were relatively similar among species. The overall abundance of chameleons (as estimated from the number of specimens observed in the time unit of field effort) was relatively similar in three contrasted habitat types, but lizards were more abundant in the mature secondary forest. When greatly altered by massive logging activity, the overall abundance of chameleons in the mature secondary forest habitat declined only slightly, whereas the species diversity declined drastically. This was an effect of (i) the simultaneous extinction of three of the four species originally present in the forest plot, and of (ii) the rapid increase in abundance of a single species (C. gracilis) as a response to habitat alteration. The conservation implications of all these data are also discussed.
Limits to natural variation: implications for systemic management
Authors:   National Marine Mammal Laboratory, Alaska Fisheries Science Center, Seattle, USA, Fowler C. , Hobbs L. ,   Big Pine, California, USA
Published: February 2025

Collectively, the tenets and principles of management emphasize the importance of recognizing and understanding limits. These tenets require the demonstration, measurement and practical use of information about limits to natural variation. It is important to identify limits so as not to incur the risks and loss of integrity when limits are exceeded. Thus, by managing within natural limits, humans (managers) simultaneously can achieve sustainability and minimize risk, as well as account for complexity. This is at the heart of systemic management. Systemic management embodies the basic tenets of management. One tenet requires that management ensure that nothing exceed the limits observed in its natural variation. This tenet is based on the principle that variation is constrained by a variety of limiting factors, many of which involve risks. Another tenet of management requires that such factors be considered simultaneously, exhaustively, and in proportion to their relative importance. These factors, in combination, make up the complexity that managers are required to consider in applying the basic principles of management. This combination of elements is reflected in observed limits to natural variation that account for each factor and its relative importance. This paper summarizes conclusions from the literature that has addressed the concept of limits to natural variation, especially in regard to management. It describes: 1. How such limits are inherent to complex systems; 2. How limits have been recognized to be important to the process of management; 3. How they can be used in management. The inherent limits include both those set by the context in which systems occur (extrinsic factors) as well as those set by the components and processes within systems (intrinsic factors). This paper shows that information about limits is of utility in guiding human action to fit humans within the normal range of natural variation. This is part of systemic management: finding an integral and sustainable place for humans in systems such as ecosystems and the biosphere. Another part of sustainability, however, involves action to promote systems capable of sustainably supporting humans and human activities, not only as individuals, but also as a species. It is important to distinguish what can and what can not be done in this regard.
Is growing tourist activity affecting the distribution or number of breeding pairs in a small colony of the Eleonora's Falcon?
Authors: Martínez-Abrain A. , Oro D. , Ferris V. , Belenguer Barrionuevo R.
Published: February 2025

Human disturbance is a common threat for species of conservation concern such as the Eleonora’s Falcon. This paper shows that the rise in tourist presence from 1992 to 2000 has not affected the overall number of breeding pairs or their productivity in a small archipelago of the western Mediterranean (Columbretes Islands). However, the increasing tourist activity has coincided with a shift in the degree of occupancy on two islands within the archipelago, favouring that with a lower human presence close to colonies. Several conservation actions are reported and suggested, aimed at both testing and preventing the role of human presence as a factor influencing long-term colony persistence and growth.
Genes, geology and biodiversity: faunal and floral diversity on the island of Gran Canaria
Authors:   CEEC, School of Biological Sciences, Univ. of East Anglia, UK, Emerson B. C.
Published: February 2025

High levels of floral and faunal diversity in the Canary Islands have attracted much attention to the archipelago for both evolutionary and ecological study. Among the processes that have influenced the development of this diversity, the volcanic history of each individual island must have played a pivotal role. The central island of Gran Canaria has a long geological history of approximately 15 million years that was interrupted by violent volcanism between 5.5 and 3 million years ago. Volcanic activity is thought to have been so great as to have made all plant and animal life virtually extinct, with survival being limited to some coastal species. The implication from this is that the higher altitude laurel forest and pine woods environments must have been re-established following the dramatic volcanic period. This paper reviews the evidence for this using recent molecular phylogenetic data for a number of plant and animal groups on the island of Gran Canaria, and concludes that there is general support for the hypotheses that the forest environments of Gran Canaria post-date the Roque Nublo eruptive period.
Niñas jaliscienses que lograron sus sueños
Authors:   Universidad de Guadalajara, Rosas Chávez Patricia , Herrera Guevara María del Pilar , Sánchez Alfaro María del Pilar , Hernández Muñoz Laura , Villoro Ruíz Carmen , Peregrina Vázquez Angélica , Tadeo Gómez Alejandra
Published: February 2025

Margarita escribió sobre historia del teatro; Inés se convirtió en científica e inventora; Chena dedicó su vida a ser una excelente maestra; Carmina fue una pintora excepcional; “La Nany” bailó en los más divertidos escenarios y Olga aprendió a curar con las palabras. Ellas también fueron niñas y, con su inteligencia y talento, hicieron que este mundo fuera más interesante, más bello y más justo para todas y todos.
Marca de fuego. Experiencias de escritores en torno a la lectura
Authors:   Universidad de Guadalajara, Souza Jauffred Jorge Alfonso , Olivares Cortés Godofredo , Bañuelos Salcedo Raúl , Poot Herrera Sara , Gómez Abbadie Luis Eugenio , Orozco Torres Sofía Lorena , Esquinca Ázcarate Jorge Edmundo , Aceves Lozano Raúl , Villoro Ruíz Carmen , Castillero Manzano Silvia Eugenia , Ramírez González Francisco Javier , Armenta Malpica Luis , Ramírez de León Luis Fernando , Ángeles Huizard María Guadalupe Refugio , Roy Françoise , Torres López Gabriela , Ochoa Villanueva Euridice Minerva , Prospero García Carlos , Medina Magaña Dante Indalecio , Arce Mejía Nadia Angélica Karina , Ramírez Michel Yolanda , Lumbreras Bautista Ernesto , Bueno Ramírez Zelene Lizethe , Izazaga Márquez David , Sigala Gómez Ricardo , Medina Gómez Patricia , Cerda González Martha Elizabeth
Published: February 2025

La señal carbonizada que deja un instrumento metálico ardiente en la pasta o canto de un libro para fijar una huella permanente es conocida como marca de fuego. Con esta metáfora podemos entender la “quemadura” provocada por la palabra literaria en el corazón de quienes dedican su vida a la escritura, incluso desde sus primeras experiencias como lectores. Esta obra presenta los testimonios de 27 autores que nos hablan de aquellos encuentros iniciales con el mundo de las letras. Devela los instantes en los que hojear un libro —fuera un obsequio o tomado por curiosidad del librero familiar— abrió las puertas a un apasionante universo que los marcó para siempre, dándoles la vocación de escribir.
Ensayo sobre el gobierno civil
Authors: Locke John
Published: February 2025

John Locke se contrapone al polémico libro El Patriarca, de Robert Filmer, donde se sostiene que el poder natural de los reyes es conferido directamente por Dios. En su ensayo sobre el gobierno civil, Locke señala que el cuerpo político (aquella entidad comparada con un cuerpo humano cuya cabeza es el jefe de Estado y sus demás miembros los conforma la sociedad), sólo puede ser bien gobernado en la medida que sea consciente de que gobierna por su propia decisión, no por gracia de la casualidad. La influencia que ejerció en su tratado será decisiva para la creación del pensamiento ilustrado y la constitución de Estados Unidos.
La rebelión de las masas
Authors: Ortega y Gasset José
Published: February 2025

Tras un análisis filosófico y profundo de lo que se vivía en Europa en 1930, José Ortega y Gasset propone la defensa de las libertades individuales y recalcar la importancia del parlamentarismo para la vida de la democracia frente al terrible fantasma del fascismo. Desarma a este último en donde una minoría construye la historia política y establece que, en política, siempre son las mayorías las que deciden. Así, en La rebelión de las masas la política es mucho más real que la ciencia, pues se compone de situaciones únicas en las que el hombre se encuentra de pronto sumergido, quiera o no.
A Day in the Badlands: A 52 Million-Year-Old Safari Adventure
Authors: Hock-Reid Devra , Diamond Judy , Paul Jenn
Published: February 2025

About the Badlands Fossils -- This story tells about the fossils of ancient animals found in the Wind River and Bighorn basins of Wyoming. Wyoming’s rich fossil record tell us about amazing animals from millions of years ago. About 66 million years ago, an asteroid slammed into the Earth, causing devastating changes that led to the extinction of dinosaurs. As the planet began to recover, it was much warmer than today, allowing palm trees and other tropical plants to grow in Wyoming. Many new species of mammals and birds emerged in this warm climate. Earth’s temperatures peaked about 52 million years ago. Paleontologists call this time the “Early Eocene Climatic Optimum.” Paleontologists study the deep-time geological record to understand how plants and animals respond to a changing climate. In this story, three children visit a paleontological site in Wyoming and get magically transported back in time, resulting in a 52-million-year-old safari adventure they will never forget!
Blended Learning Approaches for Teaching English: Integrating Online Platforms with Face-to-Face Instruction: A Case Study of the Department of English Language and Literature at Qassim University
Authors: Mahmoud Sabri Alasal
Published: February 2025

Mastery approaches like blended learning are more relevant now than they have ever been. In order to show the possibility of the implementation of the said type of learning method in university settings, it is necessary to evaluate students' perception and performance during the period of blended learning. Therefore, the aim of this research is to examine the effectiveness of the integration of virtual methods along with face-to-face lessons in teaching English. The research methodology in this study adopts an experimental design, which in this case involves the sample of students learning English from the intensive course program at the Qassim University's English Language and Literature Department, Saudi Arabia and splits them into two groups. There were 50 students who participated in the study and equal control and experimental groups for each of the students. The blended education division and the face-to-face education division are two different divisions and hence a comparative method of assessment was used. By integrating blended learning into the institutions, the study established that blended learning had a statistically significant improvement. The students of the blended education group scored higher in the English language skills test that covered reading, writing, speaking, and listening than the second group taught in the face-to-face education stream.
BIOSURFACTANT PROPERTIES AND ITS APPLICATION IN CHROMIUM REMOVAL: A REVIEW
Authors: Usman Ali Bukar  , Kawo Abdullahi Hassan , Yahaya Sani , Yahaya Sani , Inuwa Abdullahi Balarabe , Fardami Aminu Yusuf
Published: February 2025

Chromium contamination primarily originates from anthropogenic activities such as industrial discharges, mining operations, and the improper disposal of chromium-containing products, leading to its infiltration into soil and groundwater. The persistence of chromium in the environment poses severe ecological and health risks, including bioaccumulation in aquatic organisms and adverse effects on plant growth and soil microbes. Human exposure to chromium through contaminated water or occupational settings is linked to respiratory problems, skin disorders, and heightened cancer risk. Addressing these challenges necessitates sustainable remediation approaches, highlighting the potential of biosurfactants as eco-friendly alternatives to conventional methods. This review was aimed to provide an overview on different properties of biosurfactants and its application in chromium removal, covering key aspects from introduction to future perspectives. Biosurfactants as microbial-derived surface-active agents, exhibit properties that make them highly effective in reducing chromium contamination. Their biodegradability, low toxicity, and renewable production ensure minimal environmental impact. Moreover, their amphiphilic nature enhances chromium bioavailability, facilitating microbial uptake and reduction. Certain biosurfactants chelate metal ions, preventing chromium migration and secondary contamination, while their synergistic interactions with microorganisms improve remediation efficiency. By supporting the transformation of toxic Cr (VI) into less harmful Cr (III) and promoting precipitation of insoluble compounds, biosurfactants offer a sustainable and versatile solution for mitigating chromium pollution.
Formation the Robotic Mechanism Digital Twin Structure
Authors: Pliuhin Vladyslav , Slovikovskyi Oleksii , Synelnykov Oleg
Published: February 2025

The paper is devoted to solving the current socio-economic and ecological problem of developing mechanisms for the possibility of remote determination of radiation parameters and handling materials in conditions of significant radiation. Robotic mechanisms used in dangerous areas have a certain resource, and the execution of planned operations requires trouble-free operation of component systems. These are systems that are primarily critical for management. In this regard, it is very important to protect them and reduce maintenance costs. One of the methods that has already proven itself from the positive side in nuclear power is the use of a complex of interconnected digital twins that allow individual predictions to be made for each piece of equipment in a complex system. Problems in work can be detected in real time, and the approach based on a digital twin allows you to avoid breakdowns and monitor the degradation of systems. The development involves both new approaches in creating digital twins, as well as the experience of previous theoretical and experimental research conducted by the authors of the project. The research results will allow for the first time to create competitive domestic complexes that are able to extend the service life of equipment critical for ensuring human safety
Modeling the Operation of a Wind Power Plant with Full Energy
Conversion
Authors: Shkurpela Oleksandr , Kovalenko Dmytro , Kutinov Andrii
Published: February 2025

The paper provides an analysis of the operation of a wind power plant with full energy conversion based on an asynchronous generator with a short-circuited rotor. The possibility of optimizing the operation of the asynchronous generator at low speeds of shaft rotation allows to expand the range of effective use of the wind power plant at unstable wind speed and opens up wide opportunities for the application of intelligent control systems for the asynchronous generator, in contrast to the generator based on a synchronous ma-chine with permanent magnets. These advantages are achieved due to the use of converting technology, which in turn requires the use of a complex control system, the sequence of turning on the converters and the separation of control and feedback loops. The use of an asynchronous generator with a short-circuited rotor requires the presence of an initial magnetization of the machine for further operation, this can be achieved in several ways either from the network or from the storage, in the case of an autonomous system with a wind energy installation. In the course of the work, it was shown that non-compliance with the start-up procedure of the wind energy installation may result in abnormal modes accompanied by significant current and dynamic mechanical overloads of the machine and the installation's converters. The resulting simulation model can be used for research and comparative analysis of the operating modes of wind turbines with different types of generators and optimization of their control system in order to maximize the generated power from wind energy in various conditions.
Sport narratives and provincial urban space in Russian contemporary literature
Authors: Lappela Anni
Published: February 2025

This article investigates the interplay between sport and provincial urban space in contemporary Russian prose, focusing on works by Roman Senchin, Dmitrii Danilov, and Alisa Ganieva from the 2010s. The study examines the representation of Soviet-era sport in narratives set in modern provincial towns, highlighting how these sport narratives serve as a medium to explore various forms and aspects of nostalgia within the urban context. The research delves into the multifaceted relationship between sport and the city, considering personal memories, local cultural phenomena, and broader societal and national levels. This multi-scalar approach provides new perspectives and analytical tools for rethinking provincial spaces and conceptualizing nostalgia. The retrospective portrayal of sport in provincial settings is linked to broader societal and cultural issues, while also resonating with deeply personal experiences. This double exposure enhances our understanding of the role of provincial towns in contemporary Russian literature.
Book Review: Hellman, B. Son till Tolstoj – Berättelsen om Lev Lvovitj Tolstoj
Authors: Lavén David
Published: February 2025

Hellman, B. Son till Tolstoj – Berättelsen om Lev Lvovitj Tolstoj. Appell förlag, Stockholm, 2021. 448 pp. ISBN 978-91-985487-2-3
Bokrecension: Lipovetsky, M., Engström, M., Glanc, T., Kukuj, I. & Smola, K. (red.). The Oxford Handbook of Soviet Underground Culture
Authors: Parkman-Smirnova Elin
Published: February 2025

Lipovetsky, M., Engström, M., Glanc, T., Kukuj, I. & Smola, K. (red.). The Oxford Handbook of Soviet Underground Culture. Oxford University Press, New York, 2024. ISBN 9780197508213
Layanan Paliatif Pasien Gagal Jantung: Suatu Narasi Singkat
Authors: Laksono Sidhi , Hosanna Cliffian
Published: February 2025

Latar belakang: Gagal jantung merupakan penyakit dengan prevalensi cukup tinggi dengan angka mortalitas yang juga tinggi.  Di samping itu, meskipun pengobatan dilakukan secara optimal, masih terdapat kemungkinan terjadinya perburukan.
Isi: Dalam kasus gagal jantung lanjut, di mana fungsi atau struktur jantung telah mengalami kerusakan signifikan, penerapan terapi maksimal sesuai pedoman tidak lagi mampu mengatasi gejala. Populasi pasien gagal jantung lanjutan memiliki angka harapan hidup pasien yang lebih pendek. Gejala sesak dan nyeri juga akan mengganggu kualitas hidup pasien. Pasien dengan gagal jantung perlu dirujuk ke layanan paliatif sedini mungkin, terutama ketika prognosis pasien diketahui buruk dan harapan hidupnya rendah. Tinjauan literatur ini bertujuan untuk memberikan gambaran kajian ilmiah tentang layanan paliatif bagi pasien gagal jantung yang bertujuan untuk meringankan keluhan dan meningkatkan kualitas hidup pada pasien dan keluarga. Metodologi tinjauan literatur dengan melalui pencarian basis data medis pada jurnal kedokteran, pedoman, dan artikel medis.
Kesimpulan: Peran layanan paliatif pada pasien dengan gagal jantung lanjutan telah direkomendasikan berbagai perkumpulan kardiologi di berbagai macam negara karena dapat membantu pasien mendapat pelayanan paling optimal sesuai dengan keinginan pasien.