bluuebunny/crossref_metadata_2025 huggingface dataset:
Efektivitas Konseling Kelompok dengan Teknik Problem Solving dalam Menurunkan Kecemasan pada Mahasiswa Tingkat Akhir Fakultas Psikologi di Universitas Negeri Makassar
Authors: Ramadhana Novriana Luthfia , Ridfah Ahmad , Ismail Ismalandari
Published: December 2023

Mahasiswa tingkat akhir yang sedang menyusun skripsi memiliki perasaan cemas yang diakibatkan oleh faktor-faktor internal dan eksternal yang dapat menghambat pengerjaan skripsi serta memengaruhi aspek fisik dan psikis. Penelitian ini bertujuan untuk melihat efektivitas konseling kelompok dengan teknik problem solving dalam menurunkan kecemasan pada mahasiswa tingkat akhir Fakultas Psikologi di Universitas Negeri Makassar (FPSI UNM). Penelitian ini menggunakan metode true experiment dengan desain penelitian pretest-posttest control group design. Konseling kelompok dilakukan selama tiga minggu. Pengambilan sampel dilakukan dengan menggunakan purposive sampling. Sampel pada penelitian ini berjumlah sepuluh orang yang dibagi ke dalam kelompok kontrol dan eksperimen. Instrumen yang digunakan adalah Zung Self-Rating Anxiety Scale. Analisis data menggunakan uji Mann- Whitney U menunjukan nilai α sebesar .008. Analisis data menggunakan uji Wilcoxon pada kelompok kontrol menunjukkan nilai α sebesar .043. Hasil penelitian menunjukkan bahwa konseling kelompok dengan teknik problem solving dapat menurunkan kecemasan pada mahasiswa tingkat akhir FPSI UNM. Implikasi dari penelitian ini konseling kelompok dengan teknik problem solving dapat dilakukan pula di universitas lain sebagai upaya untuk mengurangi kecemasan pada mahasiswa tingkat akhir.
Analysis of vulnerability and risk of maize (Zea mays L.) production decrease on rainfed land in Garut Regency due to climate change and its strategic adaptation options
Authors: Ruminta Ruminta , Sabilla Yassa , Wicaksono Fiky Yulianto , Wahyudin Agus
Published: December 2023

Climate change, especially air temperature and rainfall, impacts the agricultural sector, one of which is the reduction of maize production. As an anticipatory effort to reduce maize production due to climate change, a study is needed to identify the possible hazard, vulnerability, and risk of maize yield reduction at the sub-district level in the largest maize-producing center in West Java, Garut Regency. After identifying areas with high or very high levels of potential yield reduction risk, a strategic adaptation that can be applied to deal with climate change can be identified. The method used in this research is descriptive quantitative. The data used include temperature, rainfall, planting area, harvest area, production, productivity, and socio-economic data of farmers obtained from LAPAN, BPS, Garut Regency Agriculture Office, and other related sources. The results of the study stated that the areas with a potential risk of production decrease at a very high level (IR ˃0.81) are in Wanaraja and Malangbong sub-districts; high level (IR: 0.61-0.80) are in Cisewu, Pakenjeng, Banyuresmi, and Limbangan. Meanwhile, the potential risk level of maize productivity decrease is very high (IR ˃0.81) in Cisewu, Pamulihan, Banyuresmi, Malangbong, and Limbangan; high (0.61-0.80) in Bungbulang, Singajaya, Cilawu, Bayongbong, Leles, Leuwigoong, Cibiuk, Cibatu, and Selaawi. Adaptation strategy to minimize the potential risk of reduced maize yields can be done by using superior hybrid varieties, managing planting time, water management, minimum tillage, and mixed cropping.
Determining the potential of sonic bloom in inducing rice resistance (Oryza sativa) against the attack of bacterial leaf blight disease caused by Xanthomonas oryzae
Authors: Algina Azka , Yulianti Syifaa Yunita , Syamsyiah Rohimatus , Yasminingrum Veadora , Nur Vendi Bergas Frenli , Dewi Vira Kusuma
Published: December 2023

Xanthomonas oryzae which causes bacterial leaf blight disease is one of the main pathogens that attack rice crops. The threat of losing rice yields due to X. oryzae needs to be avoided by implementing appropriate control strategies. Sonic bloom has the potential to induce plant immunity against diseases. Hence, this study aimed to examine the potential of sonic bloom in inducing rice resistance to bacterial leaf blight. The experiment was arranged in a Randomized Block Design (RBD) with five treatments and three replications. The treatments consisted of several frequencies, namely PR (0.5 - 1 kHz and inoculated with X. oryzae), PS (3 - 5 kHz and inoculated with X. oryzae), PT (7 - 10 kHz and inoculated with X. oryzae), KP (inoculated with X. oryzae without sonic bloom treatment), KN (no bacterial inoculation and sonic bloom treatment). The results showed that all sonic bloom treatments (LF, MF, HF) had a significant effect on increasing the intensity of BLB disease in rice plants. This showed that sonic bloom in this range does not have the potential to induce rice plant resistance to BLB. Further research to find out the causes of this is needed.
The application of Florpyrauxifen-benzyl 25 g/L, a new auxin synthetic herbicide, to control and inhibit the growth of water hyacinth weed (Eichhornia crassipes (Mart). Solms)
Authors: Rezkia Nita Nur , Kurniadie Denny , Widayat Dedi
Published: December 2023

Water hyacinth is an invasive species that spreads rapidly and causes several issues in aquatic habitats; therefore, efforts are required to eradicate weeds in aquatic ecosystems. Aquatic weed control in Indonesia using herbicide is very limited, so it can be an alternative for aquatic weed control management. This research goal was to examine the effectiveness of the herbicide with active agent Florpyrauxifen-benzyl 25 g/L in controlling and inhibiting the rapid growth of (E. crassipes). This research was carried out at the Ciparanje Greenhouse and Weed Science Laboratory, Faculty of Agriculture Universitas Padjadjaran, West Java, Indonesia, from August to October 2022. The experiment utilized a randomized block design (RBD) with eight treatments and four replications. The treatments consisted of herbicides with active ingredients Florpyrauxifen-benzyl 25 g/L doses of 5, 15, 25, 35, 45, herbicide 2,4-D DMA 825 g/L (1200), Penoxsulam 25 g/L (12.5) (g a.i/ha), and Control (Without Herbicide). According to the experiments, E. crassipes was effectively inhibited and controlled by the herbicide Florpyrauxifen-benzyl 25 g/L at a dose of 5 g a.i./ha. Florpyrauxifen-benzyl 25 g/L herbicide can inhibit relative growth rate, doubling time, number of leaves and clumps of E. crassipes up to 6 WAA.
Response differences of two maize hybrid varieties to the application of bioagent-ameliorant and chicken manure in fertile soil
Authors: Kantikowati Endang , Karya Karya , Yusdian Yudi , Minangsih Dian Murti , Turmuktini Tien , Yuliani Erna , Faujiah Fija
Published: December 2023

To ensure adequate nutrition for the growth of maize (Zea mays L.) in sustainable agriculture, it is necessary to apply bio-agent soil conditioner and manure. This study aims to determine the effect of doses of bioagent-ameliorant and chicken manure on growth and yield components. The research was conducted in highland with an altitude 800 m above sea level. This study used an experimental method with two sets of experiments, namely experiments using one and two-cobs maize cultivars. The experiment used a randomized block design (RBD) with two treatment factors and three replications. The first treatment factor was the dose of bioagent ameliorant, which consisted of 3 levels, namely 0, 7.5, and 15 kg/ha, while the second factor was the dose of chicken manure, which consisted of 3 levels, namely 0.5 and 10 tons/ha. The observed growth components were plant height and number of leaves, while the yield components observed were cob length, cob diameter, cob weight per plant, and cob weight per plot. In research on two-cob maize experiment, there was no interaction effect between doses of soil conditioner and chicken manure, while the interaction effect on plant height occurred in one-cob maize experiment. The single effect of ameliorant doses could not increase all components of growth and yield, both in one and two-cob maize cultivars. The single effect of doses of chicken manure increased number of leaves, cob length, cob weight per plant, and cob weight per plot in one-cob maize cultivar, while increased plant height in two-cob maize cultivar.
Shallot cultivation originated from true shallot seed (TSS) on Andisols enriched with various ameliorants
Authors: Aprianto Fahmi , Arifin Mahfud , Sofyan Emma Trinurani
Published: December 2023

Application of soil ameliorants is important to improve Andisols properties and increase shallot productivity. The research objective is to determine the kind of ameliorant which the best effect on the growth and productivity of shallots originating from TSS in Andisols Lembang, West Java. The experiment was conducted in Margahayu Research Station, Lembang, West Java from January to May 2021. A randomized block design (RBD) with 6 treatments and 5 replications was set up in the field. Treatments include control (no ameliorant), 20 tons/ha of horse manure, 10 tons/ha of rice straw compost, 10 tons/ha of bamboo leaf compost, 10 tons/ha of husk biochar, and 5 kg/ha humic acid. The results showed that vegetative performance and yield of true shallot seed-based shallot variety of Trisula in Andisols enriched with rice straw compost was higher than in other ameliorant treatments. Additionally, nutrient uptake in rice straw compost treatment was also higher than in other ameliorant treatments.
Review: The harvesting process and recent advances on health benefits of white tea
Authors: Mastur Adhi Irianto , Karuniawan Agung , Ernah Ernah
Published: December 2023

The meticulous harvesting process and appropriate post-harvest techniques play pivotal roles in preserving the quality and health benefits of white tea. This careful approach maintains the bioactive compounds such as polyphenols, caffeine, gallic acid, Epigallocationchin (EGC), Epigallocationchin gallate (EGCG), and Epicatechin gallate (ECG), integral to white tea's health benefits. The stability of catechin content in tea plants is greatly influenced by the environment (clone, plant age, leaf age, altitude, temperature, humidity, processing, and pH when storing dry tea). In Indonesia, the raw materials used to produce white tea are mostly pecco from the superior GMB clone Assamica variety which has high polyphenol content (14.83 – 15.43% dry weight). To increase polyphenol levels, the treatment that needs to be considered is the provision of optimum and appropriate fertilizer. The highest catechin content comes from plucking in summer and spring season. Subsequently, controlled post-harvest processes, including controlled withering and drying, safeguard the integrity of active compounds like catechins as antioxidants in white tea, mitigating free radicals and cellular damage.  The highest antioxidant showed from 23 hours whithered. The storage time for white tea also has an impact on quality. The content of catechins and amino acids showed a tendency to decrease with storage time. On the other hand, gallic acid increases with the length of storage. The combined effect of these phases, from harvesting through post-harvesting, contributes significantly to white tea's health benefits, encompassing cardioprotective effects, anti-diabetic potential, prevention of anticarcinogenic and antimutagenic activity, neuroprotective properties, and antimicrobial attributes.
The effectiveness of garlic extract against Spodoptera litura on Chili
Authors: Firmansyah Efrin , Hidayat Cecep , Roosda Anna Aina , Pradana Adinda Nurul Fatah Adi , Soelistijono R
Published: December 2023

Spodoptera litura is a polyphagous pest and attack many families of cultivated plants, such as chili plants. Application of synthetic pesticides is still the mainstay for controlling this pest in the field. To support eco-friendly plant protection management, it is important to explore potential natural materials such as garlic extract. This research aims to determine the potential of garlic extract in controlling S. litura on chili plants, and to see its indirect effect on chili yield. The research was carried out in two sites, in the laboratory and the field. The experiment used a completely randomized design with 6 treatments and 4 replications. The concentrations of garlic extract, i.e., control (0%), 24%, 26%, 28%, 30%, and 32%. The results showed the application of garlic extract had a significant effect on the mortality of S. litura, the frequency of attacks, and the intensity of pest attacks in the field, and had an effect on the variable number of fruit and fruit weight of chili plants. The LC50 and LC90 values reached 19.66% and 29.97% in the laboratory, and 28.30% and 34.3%% in the field, respectively. The LT50 and LT90 values from the 32% garlic extract in the laboratory were respectively 3.37 and 7.23 days. The application of garlic extraction affected growth and yield, i.e. healthy leaves, number of fruits, and weight of fruits in chili. The garlic extract is potentially used as an organic pesticide to suppress the S.litura attacks while keeping the plant's growth and yield.
Shareholders’ Agreement in the Crossroads of Philosophy of Law
Authors: MELIKSETYAN Karen
Published: December 2023

This article is devoted to the identification and analysis of the essence and content of shareholders’ agreements as innovative tools in the context of philosophy of law, as well as legal consequences and liability measures arising in case of violation of a shareholders’ agreement.
The article deals with the issues of conclusion, execution of a shareholders’ agreement, enforcement, termination of obligations, as well as liability arising from violation of a shareholders’ agreement.
Referring to the experience of foreign countries, it was proposed to introduce a number of liability measures under the legislation of the Republic of Armenia: options, “default”, “bad leaver”, “discount”, etc.
On the other hand, exploring the features of a shareholders’ agreement in venture joint-stock companies, we have proposed to legislate the mechanism of an investment and/or shareholders’ agreement.
The Loss of Individuality in War: Existentialist Approach
Authors: ORDUKHANYAN Emil , SARIBEKYAN Hrachya , SUKIASYAN Hayk
Published: December 2023

The article explores the issue of loss of individuality in the war according to theoretical perceptions of existentialist philosophers. The problem is observed and discussed focusing mainly on the cases of two world wars emerged in 20th century. It is obvious that these wars had a huge global impact not only on the social and political life worldwide, but also on the philosophical perceptions of human life valorization and his existence.

Based on the comparative analysis of philosophical views of different thinkers the article reveals the loss of human individuality both in social conditions and on the ontological level.  

It is concluded that if the philosophy of World War I observed death as a unifying factor, including an equalization that excludes the individual, then existentialism, as a condition of the reality of widespread death, considers it as a phenomenon that opens the spiritual eye of a person to the reality of death. As the development of technology and wars are closely related, world wars represent a direct threat by primitive nations that assimilate and use technology to absorb nations endowed with peace-loving and creative spirit. This is a big threat to humanity in terms of its dehumanization and destruction.
Philosophical and Theoretical Aspects of Court-Notary Interaction: Current Relationships in the Provision of Evidence
Authors: BEGICHEV Alexander , FROLOVA Evgenia
Published: December 2023

The article examines the modern relationship between the interaction of the court and the notary when taking measures to ensure evidence. In particular, it is indicated that when providing evidence, these bodies are guided by the norms of civil procedural legislation and implement similar goals aimed at fixing factual circumstances of legal significance in a procedural form. It is emphasized that their competence touches, moreover, the notary, as it were, replaces the court in the implementation of interim measures. One of the tasks of the effective activity of the notary is to relieve the judicial system from the consideration of local and time-consuming issues, which are solved, as a rule, without the application of the principle of adversarial parties, including the provision of evidence on the Internet. Thus, the potential of unloading the court is excluded from its competence to solve problems that do not relate to the administration of justice.
Philosophical Foundations of the Transformation of the Judicial Method of Rights Protection in the Context of the Creation of a Unified Information Space of the EEU
Authors: P. RUSAKOVA Ekaterina , E. FROLOVA Evgenia
Published: December 2023

The article is devoted to the study of the dispute resolution procedure by the EAEU Court in the context of creating a single information space of the member countries of this integration association. Within the framework of the theoretical and practical orientation of this study, special attention is paid to conceptual problems related to the description of key social and digital phenomena that arise in the process of implementing the digital agenda and its impact on the judicial method of protecting the rights and legitimate interests of citizens and business entities. The transition to digital or electronic justice will increase the efficiency of the EAEU Court and create the most attractive conditions for the parties to the dispute to protect their rights and legitimate interests. Digitalization provides for large-scale changes in the field of justice, the emergence of new means of proof, the introduction of an electronic form of cases, remote court sessions all this leads to a change in the fundamental principles of legal proceedings. The solution to this problem should begin with the creation of a comprehensive program of legislative changes to the judicial method of protecting rights related to their digital transformation within the EAEU.
Methodology for the Study of the Principles of Establishing Territorial Jurisdiction and Mechanisms for Resolving Digital Disputes by the Courts of the International Financial Center of Dubai
Authors: GRONIC Irina , BERMAN Alisa
Published: December 2023

The article attempts to analyse the principles of es-tablishing territorial jurisdiction when resolving disputes in the courts of Dubai International Financial Centre (DIFC) in the United Arab Emirates. In the context of globalization scientists and practitioners face the question of selecting appropriate and effective methods to cognize jurisdiction, the application of regulatory methods and mechanisms to resolve digital disputes in international practice. Attention is drawn to the need to develop theoretical approaches to establish the nature of relations arising from digital disputes and to determine the liability of parties in relation to the subject matter of a digital dispute, as well as in relation to technologies controlled by artificial intelligence and robotics.
Retrospective Review of Higher Education Quality: Some Parallels Between Past and Present
Authors: NADTOCHIY Yulia
Published: December 2023

Studies of education quality are currently a matter of particular relevance and importance. It would seem that the quality of education should interest the scientific community in different periods (historical periods) of time, however, as practice shows, these studies have been carried out mainly in recent times. The article describes some arguments on the quality of education based on the available historical data on the development of education in Russia. Given that it is not possible to consider in detail all historical periods in different countries within the framework of one article, a summary of the key points influencing the development of education in Russia before the revolutionary events (during a certain period of the reign of the Imperial House of Romanov) was made in a small comparison with the modern perception of the quality of education. Some factors influencing the quality of education in the period from the late 19th to early 20th centuries have been identified. The conclusion is made on changing/unchanging factors affecting the quality of education in modern reality in comparison with past experience in the development of the education system.
Analysis of Challenges in Using Google Classroom for Teaching English in Grade 2 at SMAN 4 Palu
Authors: Caharia Sentika Caharia Sentika , Ana Kuliahana Ana Kuliahana , Dzakiah Dzakiah
Published: December 2023

This research aims to find out the problems faced by teachers in using Google Classroom at grade two students of SMAN 4 Palu. The research problems are what is the problem faced by the teacher in using Google Classroom in English lessons? And how to solve the problem of Google Classroom in English lessons? This study used qualitative descriptive. The informants in this study were the principal, two English teachers, and 10 second-grade students. The data collection techniques were interviews and documentation. The result shows that the main problem faced by the teachers in using google classroom are: (1) A limited set of features that make it difficult for teachers to teach speaking and listening skills. (2) The teacher has problems in correcting students’ assignments, especially for reading and writing skills because there is no room for it. Therefore, the teachers have turned to other applications such as WhatsApp and Google Meet to support the ongoing learning process in Google Classroom, especially in teaching speaking and listening skills.
Bilişsel-davranışçı terapi temelli müdahalelerin internet bağımlılığı yaşayan ergenler üzerindeki etkilerinin incelenmesi
Authors: UZUN Mehmet , YUMAK Fadik , YILDIZ Yüksel , AYDUL Soner
Published: December 2023

İnternet bağımlılığı günümüzde ergenlerin yaşamını farklı şekillerde etkileyen önemli bir sorun olarak göze çarpmaktadır. Ergenin etkileşimde bulunduğu kişiler için baş etmesi oldukça zor görünen bu sorun alanının sağaltımında birçok terapi yöntemi kullanılmaktadır. Bu çalışmada ise bilişsel-davranışçı terapi temelli müdahalelerin internet bağımlılığı yaşayan 12-18 yaş arası ergenler üzerindeki etkililiğine ilişkin 2012-2022 yılları arasında yapılan deneysel araştırmalar incelenmiştir. Deneysel araştırma programları kapsamında; sokratik sorgulama, olumsuz düşüncelerin tespiti, bilişsel yeniden yapılandırma, sosyal beceri eğitimi, alternatif davranış kazandırma ve zaman yönetimi, gibi bilişsel ve davranışçı tekniklerle yapılan müdahalelerin etkili olduğu tespit edilmiştir. Alan yazın taraması sonucunda Bilişsel Davranışçı Terapi temelli internet bağımlılığı programlarının ergenler üzerinde olumlu etkiye sahip olduğu gözlenmekle birlikte özellikle son yıllardaki teknolojiye yönelik ilginin artmasıyla bağlantılı olarak ilişkisel tarama deseninde çalışmaların çok fazla sayıda olmasına rağmen bu konuda yapılacak olan deneysel, yapılandırılmış çalışmalara ihtiyaç duyulduğu ve yaygınlaştırılması gerektiği düşünülmektedir.
Conversion of tropical secondary forest into agricultural land: consequences for soil health and environmental stability
Authors: N’Dri Julien K. , Koffi Raymond Y. , Guéi Arnauth M. , Kouassi Eric Y. , Sékongo Allassane P. , Guessan Kévin K. N’
Published: December 2023

The objective of the study was to address the impacts of tropical forest conversion into agricultural land on changes in invertebrates’ communities, as well as soil chemical properties across 2–4 texturally distinct soils in La Mé and Grand Lahou, Côte d’Ivoire. The ﬁeldwork was carried out in the humid period on two study sites: 1– rubber landscape (secondary forest, 7-, 12- and 25-year-old rubber plantations) and 2– oil palm landscape (secondary forest, 13-, 20- and 39-year-old oil palm plantations). Three sampling stands were established on each land-use type and age class, for a total of 24 sampling stands. Over a 40–50 m transect, topsoil (0–10 cm) invertebrates were sampled by using monoliths (50 cm × 50 cm × 10 cm), following the modiﬁed ‘Tropical soil biology and fertility’ method. Soils chemical properties were also determined. The results highlighted a decrease in taxonomic richness (–35 % and –42 %), Shannon index (–32 % and –37 %), Margalef index (–34 % and –41 %), soil carbon stock (–41 % and –15 %), nitrogen stock (–38 % and –11 %) and carbon sequestration (–41 % and –15 %), respectively, after the transformation of secondary forests into rubber and oil palm plantations. The clay soils and clay sandy soils favored the development and emergence of the soil invertebrates, and allowed a higher carbon and nitrogen storage, as well as a greater carbon sequestration. Whatever the site, the soil quality was more degraded under the monoculture tree plantations compared to the secondary forests. Our ﬁndings suggest leaving residues of the previous crop on the soil surface and the incorporation of woody trees with an understory of smaller trees during the early establishment periods of monoculture tree plantations, which can create a sustainable agroforestry system with improved nutrient recycling and soil fertility.
Semi-Analytical Analysis of a Rigid Rotor Mounted on Four-Pad Hydrostatic Squeeze Film Damper with Single-Action Membrane-Type Restrictors
Authors: Kechra Ahmed , Bouzidaine Ahmed
Published: December 2023

The current study is a semi-analytical analysis of the vibratory behaviour of a rigid vertical rotor, supported by a new hydrostatic squeeze film damper (HSFD), consisting of four hydrostatic pads fed through four single-action membrane-type variable-flow restrictors. The Reynolds equation based on the Newtonian theory of lubrication is used and then adapted to our work, which is solved semi-analytically. In this paper, we study the effect of different parameters, the eccentricity, membrane geometry coefficient, pressure ratio and rotational speed, on the main characteristics of a four-pad HSFD. From the simulation results, we observed that at the critical speed, the rigid rotor fed by membrane restrictor shows a decrease in transmitted forces, a decrease in vibration response and good system stability as compared with a similar rotor fed by capillary restrictor. From the results reported in this work, we observed good agreement between our study and other works.
The Study of Temperature-Dependent Magnetic Properties Variation in CoCr2O4 Nanoparticles with (y = 0.8) and Without Coating Concentration of Non-Magnetic (SiO2)y
Authors: Mehboob Ghazanfar , Nadeem Kashif , Iqbal Amjad , Mehboob Gohar , Hussain Shahnawaz , Ragab Mohamed , Iqbal Mazhar , Ajmal Sohaib , El-Marghany Adel
Published: December 2023

The present study investigates the temperature-dependent magnetic (MT) properties of CoCr2O4/(SiO2)y (y = 0 and 0.8) nanoparticles. Nanoparticles were synthesised by using the conventional sol–gel technique. The X-ray diffraction (XRD) method confirmed the normal spinel structure of CoCr2O4 nanoparticles. The main peak analysis of the XRD pattern using Debye–Scherrer’s formula probes the mean crystallite sizes for coated and uncoated nanoparticles, and the sizes based on which the probes have been carried out amount to 19 nm and 28 nm, respectively. The transmission electron microscopy (TEM) image showed the non-spherical shape of these nanoparticles. Field-cooled (FC) and zero field-cooled (ZFC) MT plots were taken by using a superconducting quantum interference device (SQUID) magnetometer. Pure CoCr2O4 nanoparticles showed the ferrimagnetic transition at Curie temperature (Tc = 99 K) on an applied field (H) of 50 Oe. Tc decreased up to 95 K with the increase in 80% SiO2 concentration in CoCr2O4 nanoparticles. For pure samples, conical spiral temperature (TS) and lock-in transition temperature (TL) remain unchanged with increasing magnetic field because of strong spin–lattice coupling. However, for 80% SiO2 impurity, the decrease in Tc was attributed to the reduction in surface disorder with a minor decline in TS and TL. The Ms declined with a decrease in temperature because of the existence of stiffed/strong conical spin-spiral and lock-in states in pure CoCr2O4 nanoparticles, while nanoparticles with 80% coating SiO2 concentration showed abnormal behavior. The coercivity increases with a decrease in temperature due to a decrease in thermal fluctuations at low temperatures for both samples. The fitting of coercivity (Hc) versus temperature plot by using Kneller’s law has given the values of coercivity constant (α) and coercivity at average blocking temperature (TB) for both samples, which are α = 0.54, TB = 75 K and α = 1.59, TB = 81 K, respectively. Hence, the increase in the concentration of SiO2 decreased nanoparticles size and surface disorder in CoCr2O4 nanoparticles while enhancing Ms below spin-spiral state ordering.
Using Computer Technique for Developing Method for Vibration Damage Estimation Under Combined Random and Deterministic Loading
Authors: Ptak Michał , Czmochowski Jerzy
Published: December 2023

This paper is focusses on developing a novel method for vibration damage estimation for military helicopters, fighter aircrafts and any other aircraft exposed to combined stochastic and deterministic loading. The first stage of the research focused on frequency domain damage prediction, which is the legacy method proposed by Bishop and developed by Sweitzer, Schlesinger, Woodward, Kerr, Murthy, Datta and, Atkins. The mentioned frequency domain-based method is used in commercial software, e.g., MSC CAE Fatigue. Frequency domain damage prediction is based on superposition of spectral moments and Dirlik method of Rainflow Cycle Counting algorithm in frequency domain. The first phase of the research showed the legacy algorithm based on transfer function developed using FEM (Finite Element Method) method in Abaqus environment and is very conservative. The second stage of the research aims to develop a novel method which allowing for more robust and accurate damage estimation. For this purpose, the Monte Carlo method for retrieving random signal in the time domain from signal in frequency domain was used. To obtain the system transfer function, – the 1 g load harmonic system response was obtained using FEM analysis. It was subsequently scaled linearly by the PSD input curve for random loading and sine wave, or sine sweep function for deterministic loading to calculate the cumulative system response of the linear system. The research allows the development of a novel method to precisely estimate vibration damage using combined time and frequency domains approach, based on effective frequency domain FEM analysis of the linear system. The new proposed method can be also used for precise replication of test conditions via considering signal clipping and frequency resolution used for real testing.
Influence of Fluid Rheology on Blood Flow Haemodynamics in Patient-Specific Arterial Networks of Varied Complexity – In-Silico Studies
Authors: Tyfa Zbigniew , Reorowicz Piotr , Obidowski Damian , Jóźwik Krzysztof
Published: December 2023

Results obtained with computational fluid dynamics (CFD) rely on assumptions made during a pre-processing stage, including a mathematical description of a fluid rheology. Up to this date there is no clear answer to several aspects, mainly related to the question of whether and under what conditions blood can be simplified to a Newtonian fluid during CFD analyses. Different research groups present contradictory results, leaving the question unanswered. Therefore, the objective of this research was to perform steady-state and pulsatile blood flow simulations using eight different rheological models in geometries of varying complexity. A qualitative comparison of shear- and viscosity-related parameters showed no meaningful discrepancies, but a quantitative analysis revealed significant differences, especially in the magnitudes of wall shear stress (WSS) and its gradient (WSSG). We suggest that for the large arteries blood should be modelled as a non-Newtonian fluid, whereas for the cerebral vasculature the assumption of blood as a simple Newtonian fluid can be treated as a valid simplification.
MOOC awareness and utilization among students of selected Polish universities
Authors: Geryk Marcin
Published: December 2023

Purpose

The main aim of the article was to examine Polish students’ awareness about MOOCs. For this purpose, the following issues were examined: the percentage of students aware of the existence of free courses, the percentage of students who have used the courses, the most popular educational platforms among Polish students, the percentage of people who did not complete a course, and the reasons for failure. Students who had completed any MOOC were also asked about their experiences and the usefulness of the course.

Methodology

The study was conducted in October/November 2022 in the form of an online survey. The generated link to the survey was sent by e-mail to students of the Jagiellonian University, the College of Engineering and Health in Warsaw and the Gdańsk College of Health, with a request to complete.

Findings

The results obtained may be surprising, especially after looking at the situation of MOOCs in other parts of the world. The knowledge about the availability of MOOC courses among Polish students is very low. Only 61 people of all respondents knew beforehand that MOOC learning was a possibility.

Originality

The added value of the article is examination of the motivation of students to take a MOOC course, as well as the reasons for not completing the course or not participating in it. The conclusions of the survey may be useful for designers of MOOCs. They set out some good practices in remote education and ways to keep young people interested.
The Turów coal mine international dispute as a determinant of the cross-border integration of inhabitants of the Polish-Czech border
Authors: Wróblewski Łukasz , Boháč Artur , Böhm Hynek
Published: December 2023

The crisis around the operation of the Turów coal mine and its impact on cross-border relations in the Polish-Czech borderlands is examined in this article. The genesis of the international dispute and its course is analysed on the basis of international relations and border studies theories. Moreover, the specific cross-border relations and asymmetries in the area are studied. Then, the authors discuss the methodology and results of the research through questionnaires and formulate conclusions drawn from the research conducted by the Polish-Czech research team in 2022. The results prove that the nearly two-year Polish-Czech dispute over the Turów mine hurt the cross-border activity of the inhabitants of the Polish-Czech border. Despite alarming media news, this impact was weak and short-lived. It ultimately did not significantly impact the cross-border integration of the inhabitants or cause a deterioration of relations between the Polish and Czech sides of the Euroregion Neisse-Nisa-Nysa. The crisis was caused by the lack of adequate communication between local governments from Poland and the Czech Republic and insufficient commitment from the local and regional authorities. Another cause was the poor integration of residents in the border area, although the cross-border cooperation epitomised by the Euroregion Neisse-Nisa-Nysa is not poorly rated.
The Diaspora’s influence on Regional Innovation Performance – a new theoretical and empirical approach toward understanding it
Authors: Cepoi Victor
Published: December 2023

The occurrences of “brain-gain” and “brain-loss” are significant concerns for both the countries experiencing the departure of intellectual talent and those that ultimately receive such individuals. The phenomenon holds significance for stakeholders and their policy recommendations on social, economic and political areas. Moreover, there exists extensive literature elucidating the reasons behind certain nations encountering the phenomenon of “brain loss” while simultaneously observing the return of individuals to their homelands. Simultaneously, there is a limited amount of research conducted regarding the observation and comprehension of the activities in which the returning diaspora is involved post their return. Even more, there is less research done on the way the return diaspora is influencing regional innovation performance. To enhance comprehension, this article introduces a novel theoretical and empirical approach aimed at understanding the engagement of the returning diaspora in the innovation process and its impact on regional innovation performance. The novelty of this approach consists in the combination of classical theories on returning diaspora, Regional Innovation Performance and Social Fields Theory. As a result, the focus will be on the combination of the three social forces (institutions, networks, and cognitive frames) and returning diaspora. The evaluation of diaspora’s impact on regional innovation performance primarily hinges on the combination and comprehension of these two factors. However, this article serves as a theoretical proposal aimed at enhancing understanding of the phenomenon and establishing a model for systematic data collection. The empirical results could lead to policy recommendations for various stakeholders and bring improvements for helping and encouraging innovation activities in the region.
Identifikasi Karakteristik dan Formasi Kampung Melayu di Kota Pontianak
Authors: Zain Zairin , Dewi Zsazsa Pradnyaparamita Candra
Published: December 2023

Sebagai etnis yang telah menetap turun-temurun di pesisir Sungai Kapuas, Kalimantan Barat, telah banyak kampung-kampung Melayu yang terbentuk dan berkembang. Walaupun berada di satu kota dan suku yang sama, tentunya setiap kampung memiliki perbedaan karakteristik sebagai bentuk penyesuaian kondisi daerah yang ditinggali masing-masing kelompok masyarakat. Karakteristik juga dapat ditemukan dari bentuk formasi atau pola permukiman kampung. Oleh karena itu, tulisan ini bertujuan untuk mengidentifikasi karakteristik dan formasi pada kampung-kampung Melayu di Kota Pontianak, khususnya Kampung Tambelan Sampit, Kampung Bansir, dan Kampung Beting. Metode penelitian deskriptif kualitatif dengan pendekatan studi komparasi yang digunakan menghasilkan penemuan bahwa pola permukiman pada Kampung Melayu di Kota Pontianak mengikuti pola sirkulasi jalan, arah bangunan tetap menghadap ke Sungai Kapuas dan karakteristik pada masing-masing kampung karena pengaruh lingkungan atau kebiasaan dari suku lain.
REKOMENDASI DESAIN BANGUNAN SEHAT UNTUK FUNGSI HUNIAN DENGAN PENDEKATAN ARSITEKTUR BIOFILIK
Authors: Ratnasari Anisza , Putra Adiana Surya Pranata
Published: December 2023

ABSTRAK. Selama pandemi COVID-19, semua aktivitas harus dilakukan di rumah. Hal ini berarti juga membuat kita semakin jauh dari alam. Tuntutan untuk tetap produktif harus juga diimbangi dengan kesehatan dan kenyamanan berhuni. Perancangan hunian dengan pendekatan desain biofilik dapat memberikan pengalaman penghuni untuk merasakan ruang dan alam, baik secara langsung maupun tidak langsung. Metode kualitatif yang dilakukan melalui kajian literatur tentang desain biofilik dilakukan sebagai dasar perancangan hunian. Dengan demikian, implementasi desain biofilik tersebut seharusnya tidak hanya mengakomodasi kebutuhan berhuni, namun juga harus mampu menciptakan kualitas ruang dan nilai pada sebuah pola desain. Metode perancangan dilakukan melalui analisis kebutuhan ruang, studi preseden dan elaborasi atribut desain biofilik pada rancangan. Penerapan prinsip arsitektur biofilik terwujud melalui karakteristik ruang, bentuk ruang dan elemen ruang. Melalui pendekatan desain ini, interaksi penghuni, bangunan dan alam dengan optimal dapat mempercepat kenormalan baru. Sisi lain manfaat dari model perancangan ini, penghuni tetap dapat merasakan kesehatan dan kenyamanan berhuni. Kata kunci: desain biofilik; karakteristik ruang; bentuk ruang; elemen ruang; ABSTRACT. During the COVID-19 pandemic, all activities must be carried out at home, which makes us further away from nature. Productivity, health, and well-being must be in balance. The biophilic design approach of dwelling allows occupants to experience space and nature, both directly and indirectly. The qualitative method conducted through a literature review on biophilic design is the foundation for housing design. Therefore, implementing a biophilic strategy should accommodate occupancy needs and create spatial quality and the value of the design pattern. The design method is carried out by analyzing space requirements, evaluating case studies, and elaborating on biophilic design attributes. Applying these principles is manifested through characteristics of space, forms of play, and play elements. The outcome of the interaction of residents, buildings, and nature will accelerate the new normal; permanent residents can experience health and well-being. Keywords: biophilic design; characteristics of space; forms of space; elements of space
PENGATURAN FISIK PADA RUANG PUBLIK SEBAGAI PENCEGAH TERJADINYA PERILAKU NEGATIF
Authors: Almadina Alif Faricha , Widyastuti Dyah Titisari
Published: December 2023

ABSTRAK. Rasa aman merupakan salah satu kebutuhan dasar manusia yang harus dimiliki pada setiap aktivitas. Aktivitas manusia tidak hanya terjadi pada ruang personal tetapi juga pada ruang publik. Ruang publik dalam perspektif arsitektur merupakan ruang bersama sebagai ruang netral yang dihadirkan untuk memenuhi kebutuhan masyarakat. Sifat netral yag dimiliki oleh ruang publik menyebabkan terjadinya keberagaman interaksi dan aktivitas dari berbagai kalangan masyarakat pada suatu lokasi yang sama. Namun, aktivitas di dalam ruang publik tidak selalu berlangsung dengan aman. Hal ini disebabkan oleh adanya peluang terjadinya perilaku negatif oleh sebagian orang. Terlebih lagi apabila pengaturan setting fisik suatu ruang publik tidak dirancang dengan baik. Hostile architecture dan CPTED (Crime Prevention Through Environmental Design) merupakan salah dua strategi desain yang mengupayakan penekanan resiko terjadinya perilaku yang tidak diinginkan. Penerapan hostile architecture dan CPTED melibatkan pengaturan elemen setting fisik yang dapat menekan resiko tersebut. Melalui metode content analysis, perilaku negatif diklasifikasi dan dianalisis keterkaitannya dengan upaya penerapan prinsip hostile architecture dan CPTED sebagai bentuk pencegahan terjadinya perilaku negatif melalui pengaturan elemen setting fisik di dalamnya. Dalam penelitian ini dihasilkan kategori elemen setting fisik dalam ruang publik yang dapat diatur berdasarkan prinsip-prinsip hostile architecture dan CPTED sebagai bentuk penekanan resiko terjadinya perilaku negatif. Kata kunci: pengaturan fisik, ruang publik, perilaku, hostile architecture, CPTED ABSTRACT. Safety is one of the needs humans must have while doing activities. Human activities can be done everywhere, either in personal or public spaces. From an architectural perspective, public spaces were granted as a third place that provides human needs. Public space had to be neutral for all people. This principle of public space established diverse activities and interactions between them. However, only some of these activities always go well. The possibility of negative behavior by some people could be a cause. Hostile architecture and CPTED (Crime Prevention Through Environmental Design) are design strategies that reduce unwanted behavior risk. The application of hostile architecture and CPTED involved the elements' arrangement of a physical setting in a public space. Through the content analysis method, undesirable behaviors were analyzed and integrated with the principles of hostile architecture and CPTED as preventions from the circumstance through elements of the physical setting. In this study, the arrangements of physical locations in public spaces based on the principles of hostile architecture and CPTED were initiated to suppress the appearance of undesirable behavior. Keywords: physical setting, public space, behavior, hostile architecture, CPTED
Kajian Atribut pada Aktivitas Pedagang Pasar Informal di Pasar Loak Jembatan Item Jakarta
Authors: Hantono Dedi , Nuryanti Wiendu , Pramitasari Diananta
Published: December 2023

ABSTRAK. Ruang terbuka publik kota memiliki aksesibilitas yang sangat tinggi sehingga memudahkan berbagai aktivitas muncul walaupun tidak sesuai dengan fungsi ruang tersebut diantaranya aktivitas berdagang. Aktivitas berdagang yang tumbuh pada ruang terbuka publik menimbulkan tumbuhnya ruang pasar informal yang sering mendapatkan tekanan dari lingkungan. Upaya pedagang pasar informal untuk bertahan dikaji melalui atribut yang terdapat di dalam ruang pasar tersebut. Untuk melakukan penelitian ini diperlukan metode penelitian kualitatif dengan pendekatan studi kasus untuk menjawab “how” dan “why” terhadap fenomena yang terjadi. Hasil penelitian ini didapat bahwa Atribut Adaptasi bukan hanya menjadi bagian dari atribut saja melainkan membantu atribut lain dalam upaya kebertahanan pedagang pasar informal. Kemudian didapati bahwa Atribut Legabilitas tidak ditemui pada ruang pasar informal. Suatu temuan yang menarik dari penelitian ini bahwa selain atribut Weisman juga ditemukan faktor “keahlian” dalam kebertahanan pasar informal. Kata kunci: aktivitas, atribut, pasar, pedagang, ruang publik ABSTRACT. Urban public open spaces have very high accessibility, making it easier for various activities to emerge even though they are not by the function of the area, including trading activities. Trading activities that grow in public open spaces lead to the growth of informal market spaces that often get pressure from the environment. The efforts of informal market traders to survive are studied through the attributes contained in the market space. A qualitative research method with a case study approach is needed to answer the "how" and "why" of the occurring phenomena. This study found that the Adaptation Attribute is not only part of the attribute but helps other attributes in the survival efforts of informal market traders. Then, it was found that the Legibility Attribute was not found in the casual market space. An interesting finding from this research is that in addition to Weisman's attributes, the "expertise" factor is also found in the survival of informal markets. Keywords: activity, attribute, market, vendor, public space
Determinants of Asymmetric Costs In Soya Production
Authors: Reis Júlia Matias , Ferreira Mônica Aparecida , De Carvalho Hugo Leonardo Menezes
Published: December 2023

Purpose: The study aimed to analyze the determinants of the asymmetric behavior of fixed costs in soybean production.
 
Theoretical background: Although previous research indicates the presence of asymmetric costs (sticky costs theory) in the agricultural sector and, specifically, in soybean production, there is still a gap in testing which determinants explain this asymmetric condition.
 
Methodology: The study used a quantitative methodology, with the estimation of a multiple linear regression model and parametric correlation tests, using data on costs, production capacity, production quantity and soybean prices for the period from 2009 to 2022.
 
Results and conclusion: The results showed that the capacity and price factors were statistically significant in explaining the asymmetry of fixed costs. Price was also significant in explaining total and variable costs, which were also shown to be asymmetrical by the models used.
 
Research implications: The study advances in verifying the determining factors of asymmetry and not just in pointing out the behavior of costs in this sector, as previous literature has done.
 
Originality/value: The approach of the work and its results contribute to expanding empirical research related to the assumptions of the sticky costs theory in a relevant economic activity.