bluuebunny/crossref_metadata_2025 huggingface dataset:
Ethnomathematics of Pananrang: A guidance of traditional farming system of the Buginese community
Authors: Pathuddin Hikmawati , Kamariah  , Mariani Andi
Published: April 2023

Culture plays an essential role in the emergence and development of mathematics; hence, both are inseparable. Mathematics emerges from the daily activities of a group of people, and although its concepts have been applied traditionally since time immemorial, it has not reached the level of formal usage. One cultural activity involving mathematical concepts is the use of Pananrang in determining the right farming seasons despite not having a formal education. Therefore, this research explores mathematical concepts in Pananrang, which are used as a reference for the Buginese community's farming system. This is qualitative research comprising an ethnographic approach with data collected through literature research and interviews with informants with expertise in Pananrang. The results showed that the community used mathematical concepts, such as multiplication, addition, and modular arithmetic, to determine the proper farming seasons. These outcomes can be socialized and used as a contextual learning resource.
Subjective ideas about the prestige of profession among schoolchildren of the Khabarovsk territory: sociological analysis
Authors:   The Russian Presidential Academy of National Economy  and  Public  Administration,  the  Far-Eastern  institute of management – branch  of  RANEPA, Perepechay P.E.
Published: April 2023

This article presents the main methodological approaches to the analysis of the prestige of professions, as one of the criteria for social stratification of the society and its professional differentiation. Based on methodology of the stratification measurement and the results of empirical sociological studies of schoolchildren of the 8–11 grades of the Khabarovsk territory, their collective ideas about phenomenon of the prestige of professions, its conditionality by the objective conditions of the labor market and its influence on professions are analyzed. There are also the analyzed subjective opinions, value orientations and motives for choosing prestigious profession, the role of wages, parents, teachers, the media and the Internet, the intentions of obtaining specialties in organizations of the secondary and higher education in the region and beyond. The ideas of school students about the prestige of professions and their relationship with the economic and social processes in modern Russia are outlined. Conclusions are drawn on changing the process of vocational guidance in the direction of creating the conditions for students to make a conscious choice of specialties (professions) based on their personal interests in particular professions.
The fuel and energy complex of the Far East: transformation of the institutional environment
Authors:   The Pacific State University, Stroeva G. N.
Published: April 2023

The fuel and energy complex (FEC) is a complex inter-industry complex of the Far East, whose activities continue to focus on increasing the volume of production and export of energy resources. The introduction of sanctions against the oil and gas complex led to a violation of the logistics of export deliveries. The process of diversification of energy supplies to the rapidly developing market of the countries of the Asia-Pacific region and the domestic market that has begun requires the implementation of infrastructure projects of the fuel and energy complex for the construction of pipeline transport facilities. Termination of supplies of the European technologies and equipment, existing contracts for the maintenance of supplied equipment, as well as a ban on investments, exacerbated the problem of technical equipment and modernization of organizations of the complex. The state of the fuel and energy complex of the Far East is characterized by a low level of development and competitiveness of its processing sector. Under the current conditions, the formation of a modern institutional environment is becoming an important condition for improving the efficiency of the fuel and energy complex and ensuring effective domestic demand for the energy resources of the Far East. Many problems of the development of the fuel and energy complex can be solved only through a competent combination of market mechanisms for self-development and effective mechanisms of state regulation. The purpose of this study is to study the transformation of the institutional environment of the fuel and energy complex and analyze the influence of institutions on the development of the complex in the Far-Eastern federal district (FEFD). The article gives description of the political, legal and economic institutions of regulation and development institutions that form the institutional environment for the functioning of the fuel and energy complex. The main forms and methods of state support for organizations of the fuel and energy complex are systematized. The main functions of the fuel and energy complex are considered. The study was performed using the methods of systemic and comparative analysis.
Urban activism in the structure of civil society in Khabarovsk: socio-political aspects
Authors:   The Russian Presidential Academy of National Economy  and  Public  Administration,  the  Far-Eastern  institute of management – branch  of  RANEPA, Baykov N.M.
Published: April 2023

Social activity of the city residents, aimed at changing in the different spheres of their life, implemented both in the structures of civil society and in the political organizations, has acquired a sound in scientific discourse as «urban activism.» This term does not have an unambiguous definition, which makes it difficult to operationalize it for sociological measurement, but allows using a number of methodological approaches to study this phenomenon in the structure of civil society in the city of Khabarovsk. Based on the sociology of «social movements» (G. Bloomer) and the analysis of collective actions from the standpoint of frame theory (I. Hoffmann), the article attempted to analyze the results of sociological studies of public opinion of citizens, reflecting indicators of their social activity, involvement in the socio-political sphere and actions of the local authorities. It has been shown that the origins of the low civic and socio-political activity of the citizens are rooted in a state of their concern about the urgent life problems that require their solution. They serve as a driving force, on the one hand, due to dissatisfaction with the real form of life, and on the other, out of desires and hopes for some new structure of their existence. It is noted that the semantic framework and value guidelines in the collective actions of the city community, authorities and activists of political parties are often contradictory and paradoxical, giving rise to indifference and alienation from the population from involvement in collective social activities to change life for the better. Strengthening of the position of civil activism aimed at the development of the city's civil society can be facilitated by targeted information and communication activities and demonstration of the successful initiative projects not only in the improvement of the urban environment, but also in formation of responsible political consciousness and behavior of the citizens.
Dynamics of supply chain distribution systems in the apparel industry
Authors: Mbhele Thokozani Patmond
Published: April 2023

Expansion into new markets creates new opportunities and dynamics which could enhance a company’s growth prospects. It thus calls for scalable supply chain distribution systems in competitive marketplaces. The retail supply chain requires sustainable distribution systems to enhance cost efficiency. This study examined the influence of centralised, decentralised, or hybrid distribution systems on agile service delivery, productive human capacity and the supply chain process and technology. First, the study aimed to establish whether a centralised or decentralised supply chain distribution system supports expansion to the African marketplace. Secondly, this study assessed the challenges of inventory positioning and availability on the existing outbound and inbound product flow systems across the African continent. Thirdly, the study examined the interrelated strategic distribution centre performance level to develop the supply chain distribution value proposition model. A descriptive research design was employed using univariate and multivariate methods and data were gathered from 100 staff in an apparel company. The study found that a sound distribution centre requires efficient supply chain systems and a strong workforce. This calls for training and development of employees to improve the organisation’s productivity and efficiency. The managerial implications include the need to ensure that distribution centres support sustainable product availability.
A long-term study of size variation in Northern Goshawk Accipiter gentilis across Scandinavia, with a focus on Norway
Authors: Walker Samuel , Lislevand Terje , Meijer Hanneke
Published: April 2023

Changing climate and growing human impacts are resulting in globally
rising temperatures and the widespread loss of habitats. How species
will adapt to these changes is not well understood. The Northern Goshawk
(Accipiter gentilis) can be found across the Holarctic but is coming
under more intense pressure in many places. Studies of recent
populations in Finland and Denmark have shown a marked decline in body
size of Northern Goshawks over the past century. Here we investigate
long-term changes to Norwegian populations of Northern Goshawk by
including material from the Middle Ages and Viking Age. We measured 240
skeletons of modern Northern Goshawks from Norway, Sweden, Denmark and
Finland, and 89 Medieval Goshawk bones. Our results show that Norwegian
and Swedish female Goshawks have decreased in size over the past
century, whilst males showed little decline. Medieval female Goshawks
were larger than contemporary females. The Viking Age specimens showed
little difference to modern populations but appeared smaller than
specimens from the Medieval period. A decline in forest habitats and a
concomitant shift towards smaller prey likely drove a shift to smaller
body size in Northern Goshawks. Our study shows that significant body
size changes in birds can occur over relatively short time spans in
response to environmental factors, and that these effects can sometimes
differ between sexes.
SOLUTIONS TO PELL'S EQUATION VIA SUBORBITAL GRAPHS
Authors: KÖROĞLU Tuncay
Published: April 2023

In this study we investigate a special subgroup of the modular group
that act on the extended rationals for the aim of investigate to derived
suborbital graph. By considering this graph we give some new results
related to integer solutions to the Pell’s equation of the form x 2 − p
y 2 = 1 where p is a non-square positive integer.
Awake Surgery in ENT - Our experience
Authors: Loizidou Avgi , Bhalla Rajiv , Andrews Peter J , Joseph Jonathan
Published: April 2023

Background Current shortage of operative space and anaesthetic staff led
to 531907 ENT cases waiting to be performed as of June 2022; a trend
expected to worsen. Awake surgery can provide a safe and effective
alternative reducing the need for anaesthetic cover while utilising
alternative operating spaces. Methodology Prospective cohort study of 86
patients undergoing ENT procedures under local anaesthetic with/without
operator delivered sedation using midazolam; performed in the ambulatory
Procedure Zone of an ENT tertiary centre in the UK by a single sedation
trained rhinologist. Results N=54 inferior turbinate reduction (n=19
with radiofrequency ablation, n=25 with co-ablation, n=13 combined with
a second procedure). Pre-operative mean SNOT23 score 59, mean NOSE score
of 17.89, 3 month post-operative mean SNOT 23 score 36 and mean NOSE
score 7.92 (P<0.05). N=18 balloon sinoplasty, n=4 endoscopic
sinus procedures; pre-operative mean SNOT23 score 76, 3 month
post-operative mean SNOT23 score 25 (P<0.05). N=12 nasal
biopsies, n=8 septoplasties, n=6 adhesiolysis, n=1 grommet insertion,
n=1 excision of pinna lesion, n=1 canal polypectomy. Visual analogue
scale was used to assess patient comfort during the procedure; 4/10 mean
score (IQR 2-8) for cases under local anaesthetic ranged, with addition
on sedation comfort increased with mean score of 8/10 (IQR 1-10). Due to
the low numbers of cases statistical significance was not calculated.
Conclusion Awake surgery in ENT is a safe and effective alternative to
general anaesthesia. It is a cost effective service, which shortens
waiting and treatment times, and coupled with operator delivered
sedation leads to high patient satisfaction rates.
Providing conceptualization to the educational system of secondary school children (Case of Russia's Zabaykalsky Krai)
Authors: Novikov Alexander Nikolaevich , Mamedov Aladdin Nasib-Oglu , Novikova Maria Sergeevna
Published: April 2023

The aim of this paper is to provide conceptualization to the educational system of interdisciplinary spatial representations of the local residence place of children in secondary general education schools in Russia's Zabaykalsky Krai. The main research method is conceptualization that implies the comprehension and generalization of the authors' many years of work with further presentation of the theoretical arrangement to the accumulated data array. The study may be considered a novel one since it combines different types of authors' activities (scientific, educational, popularizing) on a unified conceptual basis. Theoretical and informational platforms for the mentioned kind of education in Zabaykalsky Krai are the two projects supplemented by the quests system. The third project is aimed at popularizing the first two by organizing game quests among the children of the region. The local history quests of the project had a great impact on activating the cognitive interest of the students in local, interdisciplinary research.
Liraglutide and Exercise Synergistically Attenuate Vascular Inflammation and Enhance Metabolic Insulin Action in Early Diet-Induced Obesity
Authors: Liu Jia , Aylor Kevin W. , Liu Zhenqi
Published: April 2023

Inflammation-induced vascular insulin resistance is an early event in diet-induced obesity and contributes to metabolic insulin resistance. To examine whether exercise and glucagon-like peptide 1 (GLP-1) receptor agonism, alone or in combination, modulate vascular and metabolic insulin actions during obesity development, we performed a euglycemic insulin clamp in adult male rats after 2 weeks of high-fat diet feeding with either access to a running wheel (exercise), liraglutide, or both. Rats exhibited increased visceral adiposity and blunted microvascular and metabolic insulin responses. Exercise and liraglutide alone each improved muscle insulin sensitivity, but their combination fully restored insulin-mediated glucose disposal rates. The combined exercise and liraglutide intervention enhanced insulin-mediated muscle microvascular perfusion, reduced perivascular macrophage accumulation and superoxide production in the muscle, attenuated blood vessel inflammation, and improved endothelial function, along with increasing endothelial nucleus translocation of NRF2 and increasing endothelial AMPK phosphorylation. We conclude that exercise and liraglutide synergistically enhance the metabolic actions of insulin and reduce vascular oxidative stress and inflammation in the early stage of obesity development. Our data suggest that early combination use of exercise and GLP-1 receptor agonism might be an effective strategy in preventing vascular and metabolic insulin resistance and associated complications during the development of obesity.

Article Highlights

Inflammation-induced vascular insulin resistance occurs early in diet-induced obesity and contributes to metabolic insulin resistance. We examined whether exercise and GLP-1 receptor agonism, alone or in combination, modulate vascular and metabolic insulin actions during obesity development. We found that exercise and liraglutide synergistically enhanced the metabolic actions of insulin and reduced perimicrovascular macrophage accumulation, vascular oxidative stress, and inflammation in the early stage of obesity development. Our data suggest that early combination use of exercise and a GLP-1 receptor agonist might be an effective strategy in preventing vascular and metabolic insulin resistance and associated complications during the development of obesity.
Psoriasis in Norway: A Prescription-based Registry Study of Incidence and Prevalence
Authors: Solberg Silje Michelsen
Published: April 2023

Epidemiological data on psoriasis in Norway are limited. The aim of this study was to provide objective national data on the incidence and prevalence of psoriasis. Patients registered in the Norwegian Prescription Database with a diagnostic code indicating psoriasis vulgaris on prescriptions were included. During the period 2004 to 2020, 272,725 patients received prescription for psoriasis vulgaris in Norway. During the period 2015 to 2020, 84,432 patients received prescription for psoriasis vulgaris for the first time. In 2020, 71,857 (97.7%) patients received topical, 7,197 (9.8%) conventional systemic and 2,886 (3.9%) biological medication for psoriasis vulgaris. In the period 2015 to 2020, the point prevalence of psoriasis was 3.8–4.6% and the incidence was 0.29–0.25%. Norway is divided into 4 geographical health regions. A latitudinal difference was observed between the 4 regions, highest in Northern Norway. In the incidence population, median age was 47–53 years and males comprised 46–50%. In this study of psoriasis vulgaris, prevalence in Norway was higher than in earlier reports from other countries. There was a small female predominance regarding incidence and prevalence; however, men had more prescriptions for systemic treatment. Prescriptions for psoriasis vulgaris showed a stable level, with a trend of increasing use of biological medication during the study period.
“Menjadi Nutrition Champion di Media Sosial”: Peningkatan Kapasitas Kader Kesehatan dalam Upaya Pencegahan Anemia Kehamilan
Authors: Arifah Izzatul , Alamsyah Shania Salsabilla , Cahyanti Erin Tri
Published: April 2023

The proportion of anemia is high among pregnant women in Indonesia making it a priority health problem, especially in various regions, including Central Java Province. Educational efforts to empower pregnant women are necessary. A nutrition Champion is necessary for the optimization of activities. Interviews show that the online pregnant women's class has been carried out but encountered obstacles such as the inactivity of participants and the busyness of each health worker. This service activity aims to increase the capacity of health cadres in becoming nutrition champions on social media for the prevention of anemia during pregnancy. The expected output target is that health cadres have media that are interesting and effective in educating in the form of electronic booklets. As well as an increase in knowledge and motivation of health cadres in becoming nutrition champions on social media to prevent anemia in pregnant women. The activity was carried out in June 2022 and attended by 30 health cadres offline in the Sangkrah Puskesmas work area (100% of the target). Electronic booklets have been disseminated and explained to all cadres. The evaluation results showed that the majority (80%) of cadre knowledge levels increased after training (p-value<0.001). The cadre of the Kratonan Health Center is then expected to become nutrition champions who help overcome the incidence of anemia in pregnant women in Surakarta. Periodic monitoring and education of health cadres need to be carried out to increase their role as nutrition champions for anemia prevention in the community.
Peningkatkan Kemampuan Promosi Online Taman Lazuardi Desa Susukan, Sumbang, Kabupaten Banyumas Melalui Pembuatan Video
Authors: Nuryanti Nuryanti , Setiansah Mite , Pangastuti Marhaeni Dwi , Pangestuti Sri , Islah Perwita Adinna
Published: April 2023

Taman Lazuardi as one of the tourist destinations of Susukan Village, of course it requires promotion in order to attract tourists to come to Taman Lazuardi. Taman lazuardi promotion team has used several social media platforms as promotional tools, but the results are still not optimal. One of the reasons is the lack of skills to create interesting content. One of the content that according to the promotion team is not yet attractive is content in the form of promotional videos. Therefore, it is necessary to provide training in create videos for promotional purposes through social media which can ultimately attract tourists. The service implementation team in this case will cooperate with the Taman Lazuardi promotion team in Susukan Village, Susukan, Banyumas. The method used to overcome partner problems is to do some training sessions and accompaniment. The result of this activity was the creation of 7 promotional videos made by Susukan residents and uploaded to Taman Lazuardi's social media.
Peningkatan Pengetahuan tentang Cara Melakukan Latihan Fisik atau Olah Raga yang Aman Bagi Penderita Diabetes Mellitus
Authors: Komalasari Dwi Rosella , Arif Pristianto
Published: April 2023

Diabetes mellitus is a progressive chronic disease. DM is a disease with the category of non-communicable disease or a disease that is not caused by an infectious disease. Prolonged hyperglycemia has an impact on the development of microvascular and macrovascular complications, resulting in various problems, dissability and decreased quality of life. Regular and safe physical exercise is a therapy that can reduce glucose. However, not all people with diabetes are allowed to exercise. There are several provisions that must be observed to avoid side effects after exercise, such as hypoglycemia. Because DM is a disease with metabolic disorders, it is possible for patients to have complications, such as hypertension and coronary heart disease as common complications of DM. Not all people with DM understand the provisions that must be considered before doing exercise. Therefore, counselling is the most appropriate activity to provide information to patients with DM about the provisions that have to be considered before exercising. Counselling activities are expected to be followed up by patients with DM to do physical exercise or sports regularly and pay attention to their own condition. So that it can reduce the risk of developing DM and its complications and improve the quality of life of patients with DM.
Literasi Lingkungan melalui Pendidikan di MTs Muhammadiyah Gantung Belitung Timur, Bangka Belitung
Authors: Samidjo Gatot Supangkat , Widodo Aris Slamet , Kusumastuti Linda , Suryadin Asyraf
Published: April 2023

The level and amount of environmental degradation has increased, along with the increase in population. Environmental problems that arise are not technical-technological problems, but rather a human behavior. Education is the only way to improve human behavior.  Environmental education needs to be introduced and developed in the society, especially through MTsM Gantung which has adequate educational equipment (infrastructure) (Mangrove Literacy House) and a good education history. However, both hardware and software need to be integrated in an integrated manner to be more effective and efficient.   The problem is, not all educational institutions specifically make environmental education an important subject in the learning process, so environmental education is needed as an effort to literacy and inculcate environmentally friendly behavior.  The method used in this Community Partnership Program (CPP) is Direct Action and Together Learning. Several management techniques were applied, including Participatory Rural Appraisal and Focus Group Discussion. This program was conducted from March to August 2022.  The program results showed that Environmental Education is a new knowledge that has never been known before. Environmental Literacy through education has well understood by teachers and students. The implementation of environmental education is agreed to be included in the curricular learning curriculum as local content, co-curricular as a support for natural science subjects, especially Biology, and extra-curricular as additional knowledge/competence for students. Environmental Education Infrastructure that could use as learning aids for Environmental Education, namely Mangrove Literacy Houses, Mangrove Rehabilitation Areas, Mining Areas, and natural science learning aids that already exist in schools.
Pengembangan Ulang Sistem Informasi Akademik SMK demi Pemanfaatan dan Peningkatan yang Berkelanjutan
Authors: Santosa Iqbal , Edi Sutoyo  , Rahmat Fauzi
Published: April 2023

Daarut Tauhid Boarding School Vocational School (SMKDTBS) Bandung has implemented SIAKAD Online since 2019, but the school feels that the implementation is still not optimal and needs to be redeveloped because this system has not been able to meet the needs of stakeholders and since 2021 it has no longer received financial support for development. This is a gap that must be completed by the school, considering that the development of information technology, especially in the academic field, has increased significantly, especially with the increasing trend of working from home since the pandemic. An academic information system is needed that suits the needs of stakeholders and can ensure the continuity, sustainability, and even increased achievement of SMKDTBS Bandung. The Community Service Program (PkM) will answer this need, with the development of the first phase of SIAKAD which will be carried out within a period of 4 months from March to May 2022 by the PkM team consisting of 3 lecturers and 2 students. PkM is carried out in several stages: the needs gathering stage produces ERD, use case diagrams, activity diagrams, and SIAKAD mockups; the development stage produces a system with features that have been adapted to current needs; the stage of preparing the guidebook to produce a guidebook for using SIAKAD; the training stage is carried out by training on SIAKAD installation and its development environment for teachers who act as admins; finally, the evaluation phase obtained positive feedback from the school who felt helped by the re-development of SIAKAD. After PkM is completed, it is hoped that the development of SIAKAD can continue, at a more affordable cost because it can be carried out independently by admin teachers at SMKDTBS, so that in the end all school management processes are integrated into just one system.
Pengaruh penggunaan media gambar berseri terhadap kemampuan menulis teks fabel pada siswa Kelas VII MTs Muhammadiyah Kota Jambi
Authors:   Universitas Jambi, Indonesia, Hanindiya Nur Azmi , Budiyono Herman ,   Universitas Jambi, Indonesia, Rahmawati Rahmawati ,   Universitas Jambi, Indonesia
Published: April 2023

Penelitian ini mengkaji tentang penggunaan media gambar berseri terhadap rendahnya kemampuan menulis teks fabel pada siswa. Tujuan dari penelitian ini untuk mendeskripsikan pengaruh penggunann media media gambar berseri terhadap kemampuan menulis teks fabel pada siswa kelas VII MTs Muhammadiyah Kota Jambi tahun ajaran 2022/2023. Penelitian ini dilakukan di MTs Muhammadiyah Kota Jambi kelas VII A sebagai kelas eksperimen dan kelas VII B sebagai kelas kontrol. Metode penelitian ini menggunakan penelitian kuantitatif dengan jenis penelitian kuantitatif semu atau quasi eksperimen. Hasil penelitian ini membuktikan bahwa adanya perubahan dari hasil menulis siswa setelah diberi perlakuan pada kelas eksperimen. Pada hasil pre-test diperoleh nilai rata-rata siswa sebesar 64,17, sedangkan pada hasil post-test diperoleh nilai rata-rata siswa sebesar 86,67 dan nilai Sig. 0,000. Hal ini menunjukan adanya pengaruh dari penggunaan media gambar berseri terhadap kemampuan menulis teks fabel pada siswa kelas VII MTs Muhammadiyah Kota Jambi. Dari hasil tersebut, disarankan agar pembelajaran menulis teks fabel perlu menggunakan media gambar berseri terhadap kemampuan menulis teks fabel pada siswa dan untuk peneliti lanjutan disarankan untuk dapat mengembangkan penggunaan media gambar berseri dengan menerapkan di materi lain yang belum perna dicoba dalam pembelajaran menulis agar dapat mengembangkan dan meningkatkan pengetahuan di bidang pendidikan. Kata kunci: gambar berseri, menulis, teks fabel
EFFECTS OF PEER TEACHING ON GRAMMAR LEARNING: DOES IT ENHANCE LEARNER AUTONOMY?
Authors: Dewantono Satrio , Murtisari Elisabet Titik
Published: April 2023

Peer teaching has been widely applied in university settings to assist language learners. However, concerns have been raised about the potential impact on learner autonomy as this teaching method involves a more able learner tutoring a lower-level one. Despite this, little attention has been given to examining this issue. For this reason, this qualitative study investigates whether peer teaching can help foster tertiary EFL students' autonomy in isolated grammar learning, which may serve as more intensive training to improve metalinguistic knowledge and grammar competence within restricted time frames. Based on reports from 29 survey participants and 11 interviewees, the study finds that peer teaching can promote learning autonomy, with students engaging in various activities to enhance their learning during tutoring and/or the peer teaching program. Participants reported improvements in learning motivation, subject understanding, problem-solving skills, and monitoring and evaluating skills. However, some students, especially those with lower abilities, appeared to be more reliant on peer tutors in constructing their knowledge, providing self-study materials, and frequency of grammar self-study. This study provides crucial qualitative findings that shed light on the effects of peer teaching on learner autonomy, particularly for EFL teacher education students' grammar learning.
Estratégias e procedimentos utilizados por estudantes do 3º ao 5º ano do ensino fundamental na operação aritmética de multiplicação
Authors: Bessa Sônia , Souza Costa Dayse
Published: April 2023

A matemática vai muito além da escola, ao permitir às pessoas a participação no mundo letrado. Assim, esta pesquisa empírica tem o objetivo de investigar o nível de compreensão de multiplicação de estudantes do 3º ao 5º ano do ensino fundamental e quais estratégias utilizam para resolverem atividade experimental envolvendo essa operação. Participaram 81 estudantes de quatro escolas públicas e particulares de cidades do estado de Goiás. O instrumento utilizado para identificar a compreensão de multiplicação foi uma situação experimental que requeria conhecimento de adição, multiplicação e divisão, com a possibilidade de encontrar seis níveis de compreensão de multiplicação, com níveis crescentes de complexidade. Os resultados encontrados apontaram que os estudantes dos três anos escolares das escolas públicas e particulares têm dificuldades com a operação de multiplicação com números naturais e a operação “n vezes x” por antecipação mental, recorrendo com frequência ao suporte empírico e uso frequente e intuitivo da soma repetida. Não foi verificada diferença significativa quanto ao gênero e nível socioeconômico, mas a idade e o ano escolar cursado foram bons preditores de melhor compreensão de multiplicação. Dessa forma, este estudo abre possibilidades de pesquisas envolvendo a prática pedagógica das operações aritméticas e confere amplitude à análise dos processos de ensino e aprendizagem.
Tarhan Köyü Merası Kiralama Talebinin Mera Kanunu Açısından Değerlendirilmesi
Authors: ERDOĞAN Hörünaz , ŞAHİN Muhammet , UZUN Ömer Faruk
Published: April 2023

Bu çalışma, 4342 sayılı Mera Kanunu gereği 31.07.1998 tarih ve 23419 sayılı resmi gazetede yayınlanarak yürürlüğe giren Mera Yönetmeliği’nin 7. Maddesi gereğince; Çorum ili, Merkez ilçesi, Tarhan köyünün 120.7 da’lık mera parsellerinin kiralanması talebi üzerine 2020 yılında yürütülmüştür. Çalışmanın esasını, mera durumunun belirlenerek meranın ıslaha ihtiyaç duyup duymadığı ve köyün hayvan varlığının ot ihtiyacını hangi oranda karşılayabildiğini oluşturmaktadır.
Mera alanı genel olarak taban alanda yer almakta olup, %0.75 eğim derecesi ile düz bir arazi yapısına sahiptir. Mera parsellerinin vejetasyon etütleri lup yöntemiyle yapılmıştır. Çalışılan meranın durumu, ortalama 23.55 ile “Zayıf” sınıfta yer almıştır. Bunun anlamı bitkisel yönden olması gerekenin çok daha altında bir kalite ve verimliliğe sahip olduğu, ıslah edilirse üretkenliğinin 4 kata kadar artırılabileceğidir. Genel olarak bütün mera parselleri hafif derecede otlatılmıştır. Sadece iyi kaliteli yem bitkilerinin daha fazla olduğu alanlarda bu bitkiler seçilerek ve genel olarak üstten % 50’den fazla anız kalacak şekilde otlatılmıştır. Merada yer alan iyi kaliteli yem bitkilerinin yarıdan daha fazlasının çiçek ve tohum sapları otlatılmadan kalmıştır. Genç bitkilerin çoğu otlatmadan zarar görmemişlerdir. Hayvanlar tarafından tercih edilmeyen bitkiler hemen hemen hiç otlatılmamıştır. Toprak yüzeyinde belirgin hayvan izleri görülmemiştir.
Bu verilere göre kiralamaya konu olan mera alanı, Mera Kanununun 12. maddesine göre, ıslah etmek koşulu ile 25 yıla kadar kiralanabilir. Kiralamada öncelik, kiralama ihalesinin yapıldığı tarih itibarıyla, Tarhan köyünde en az 6 aydan beri ikamet edenler ve hayvancılık işletme belgesi sahibi olanlardır.
Tarsus ve Karaisalı Bölgelerindeki Doğal Frenk İnciri (Opuntia ficus-indica) Popülasyonunun Ön Tanılaması
Authors: BAK Tuba , GÜLER Emrah , KARADENİZ Turan , OKTAY Furkan Burak
Published: April 2023

Frenk inciri (Opuntia ficus-indica), güney bölgelerimizde doğal olarak yetişen, kaktüsgiller ailesinden bir meyvedir. Bu çalışmada, Adana ilinin Bucak ve Bozcalar köyleri ve Mersin ilinin Yanıkkışla, İncirgediği, Kırıt, Cırbıklar, Taşobası, Kumdere, Çokak ve Aladağ köylerinden oluşan bölgede doğal olarak yetişen frenk inciri popülasyonu incelenmiştir. Sörvey çalışması ile iri meyveli ve nispeten az dikenli olduğu değerlendirilen genotipler çalışmaya dahil edilmiştir. Seçilen genotiplerde bazı temel meyve özellikleri çalışılmıştır. Temel bileşen ve kümeleme analizi ile ümitvar genotipler belirlenmiştir. Genotiplerde meyve ağırlıklarının 67.40-138.00g, yenilebilir meyve ağırlıklarının 25.70-82.77g ve SÇKM değerlerinin %9.10-13.23 arasında olduğu tespit edilmiştir. Kümeleme analizi sonucunda beş genotip ümitvar olarak öne çıkmıştır. Çalışma sonuçları Adana-Mersin il sınırındaki köylerde yetişen frenk inciri genotiplerinin meyve boyutları bakımından düşük varyasyon gösterirken, özellikle yenilebilir meyve ağırlığı bakımından yüksek varyasona sahip olduğu ve bu özelliğin sonraki çalışmalarda bir ayıraç olarak kullanılabileceğini göstermiştir.
Bazı Elazığ Biberi (Capsicum annuuum L.) Genotiplerinin Morfolojik Karakterizasyonu
Authors: DURUK Zeliha , PİNAR Hasan
Published: April 2023

Türkiye’de ve Dünya’da yaygın olarak üretilen ve tüketilen biber bitkisi bazı tehditlerle karşı karşıyadır. Bu açıdan genetik kaynakların korunması aynı zamanda ıslah programlarına kazandırılmaya çalışılması bu noktada oldukça önemlidir. Yöresel biber çeşitlerinden biriside uzun yıllardan bu yana Elazığ ili ve çevre illerde yöresel olarak yetiştirilen ve bölge halkı tarafından severek tüketilen standart biber çeşididir. Ancak üretim alanları incelendiğinde söz konusu çeşitte açık tozlanmaya bağlı olarak açılımların olduğu gözlenmektedir, Buradan hareketle bu çalışmada Elazığ ilinden toplanmış olan 26 biber genotipinin morfolojik karakterizasyonu amaçlanmıştır. Bu çalışmada Capsicum annuum türüne ait bazı Elazığ yerli biberinin morfolojik karakterizasyonunun yapılması amaçlanmıştır, Çalışmada Elazığ’dan toplanan 26 genotipin bazı morfolojik özellikleri ile karakterizasyon yapılmıştır. Morfolojik karakterizasyon için 51 adet bitki ve meyve özelliği incelenmiş elde edilen dengdogramda ise kontrol olarak kullanılan genotiplerle beraber 0,07 ile 0,91 benzerlik ve 2 ana grup elde edilmiştir. Birinci grupta sadece 18 nolu genotip yer alırken diğer grupta tüm genotipler yer almıştır. Elde edilen verilere göre bazı Elazğ biberlerinde morfolojik karakterizasyon sonucunda oldukça geniş varyasyon elde edilmiştir. Elde edilen bu varyasyon Elazığ yerli biberinin ıslahı ve üretiminin yaygınlaşmasına, katkı sağlayabileceğini göstermektedir.
EFFECTS OF SHORT-TERM PLYOMETRIC TRAINING ON LOWER EXTREMITY POWER, STRENGTH, ENDURANCE AND KICKING SPEED IN MALE COLLEGE SOCCER PLAYERS
Authors: Wee Eng Hoe , Boon Aik Hau , Ler Hui Yin
Published: April 2023

This study investigated the effects of 6 weeks plyometric training [PT] on leg power and strength, and kicking velocity. Nineteen male soccer players (age = 19.2 + 1.3 years) were randomly assigned into control group (CG, n=9) and experimental group (EG, n=10) after pre-tests on the five measures (maximal ball velocity (MBV), squat jump [SJ], countermovement jump [CMJ], squat test [ST], and isokinetic leg strength.). Both groups performed similar bi-weekly soccer training program (technical, tactical, and matches) together, and EG also performed PT twice per week. Wilcoxon signed-rank test on the pre-test median scores between EG and CG showed insignificant differences in kicking speed, leg power, leg strength, and leg endurance. However, significant post-test comparison was found for leg strength (U=19.0, p=0.034) between EG and CG. In the pre and post-test comparisons, EG showed significant gains relative to CG in MBV (p < .05, d = 1.37), leg power (p < .05, d = 0.97), and leg strength (p < .05, d = 0.95) while CG only achieved significant improvement in the MBV (P < .05, d = 1.16). It concludes that adding plyometric training to regular soccer training improved leg strength in college soccer players.
Student Satisfaction with Blended Learning: An Online Survey in a Vietnamese University
Authors: Phuong Bui Thi Kim , Anh Bui Thi Van
Published: April 2023

Blended learning has been widely applied in Vietnamese higher education in recent years. In blended learning, student satisfaction is regarded as a decisive factor in assessing whether blended learning courses are successful or not. This paper assesses the students' satisfaction with a blended English language learning course and with four groups of criteria, including course contents, teaching methods, exercises on LMS (Learning Management System), and assessment tasks. An online survey with 250 students from a Vietnamese university reveals that students have a high level of satisfaction with the course and other criteria. Furthermore, a strong linear relationship has been identified between the overall satisfaction of the whole course and the students’ progress after the course. The findings are expected to promote and improve blended learning practices in Vietnam universities with practical implications for course developers and other stakeholders.
Investigation of the Interaction Tones Produced by Contra-Rotating Unmanned Aerial Vehicle Rotor Systems
Authors: Jung Riul , Kingan Michael J. , Dhopade Priyanka , Sharma Rajnish N. , McKay Ryan S.
Published: April 2023

This paper investigates the interaction tones produced by the periodic unsteady loading on the blades of two different contra-rotating unmanned aerial vehicle (UAV) rotor systems using computational, analytical, and experimental methods. Computational fluid dynamics (CFD) simulations are used to predict the unsteady loading on the rotor blades and to visualize the flow through the rotors. Semi-analytical models are also presented for predicting the portion of this unsteady loading due to the interaction of each blade with the bound potential field of the adjacent rotor. A comparison of the unsteady loading predicted using the CFD simulations and the semi-analytical models shows that, for the cases considered, the semi-analytical models accurately predict the unsteady loading on the top rotor and that the bound potential field interaction source is a significant contributor to the total unsteady loading on the bottom rotor. A frequency-domain acoustic analogy method is also presented, which is used to calculate the interaction tones produced by the unsteady loading on the rotor blades at various observer locations. Predictions of the sound pressure levels of the prominent interaction tones at different observer locations are presented and compared with experimental measurements showing generally good agreement. The effect of rotor spacing on the amplitude of the interaction tones is also explored, and it is shown that the methods predict a decrease in sound pressure level produced by increasing the rotor spacing and that these predictions are in reasonable agreement with experimental measurements.
Analysis of Fragment Distributions from Carbon-Fiber-Reinforced Composite Panels Subjected to Hypervelocity Impacts
Authors: Olivieri Lorenzo , Giacomuzzo Cinzia , Francesconi Alessandro
Published: April 2023

In the last decades, carbon-fiber-reinforced composite plates (CFRPs) have been widely employed for various structural applications on board spacecraft. Compared to metals, CFRPs present different mechanical properties related to the anisotropy of the fibers; this can strongly influence the response of CFRPs to hypervelocity impacts. In this work, four impact experiments performed on thin panels of CFRPs are presented to assess the influence of the impact velocity and of the impactor size on the fragmentation process; experimental data include fragment cumulative size and shape distributions. It is shown that size distributions strongly differ from aluminum plates in terms of the total number and shape. Significant differences are also shown on the shape distributions, which are mostly related to the presence of needle-shaped fragments.
Blade-Wake Interaction Noise for Small Hovering Rotors, Part I: Characterization Study
Authors: Thurman Christopher S. , Baeder James D.
Published: April 2023

This work illustrates the use of artificial neural network modeling to study and characterize broadband blade-wake interaction noise from hovering small unmanned aerial systems rotors subject to varying airfoil geometries, rotor geometries, and operating conditions. Design of experiments was used to create input feature spaces, and a high-fidelity strategy was implemented at the discrete data points defined by the input feature spaces to design airfoils and rotor blades, predict the unsteady rotor aerodynamics and aeroacoustics, and isolate the blade-wake interaction noise from the acoustic broadband noise. A metric for the blade-wake interaction noise was developed, and the ANOPP2 Artificial Neural Network Tool was used to identify an optimal prediction model for the nonlinear relationship between the input features and the metric for blade-wake interaction noise. This optimal artificial neural network was then validated over training/test data and exhibited prediction accuracy over 91% for data previously unseen by the model. A sensitivity analysis was conducted, which showed that input features that directly modify the thrust coefficient had a dominant effect over blade-wake interaction noise. The optimal prediction model along with aerodynamic simulations were used to further study the effect of varying input features on blade-wake interaction noise, and three types of blade-wake interaction noise were identified.
Cambios en los objetivos y en los instrumentos de la política económica en contextos de crisis e incertidumbre: especial énfasis en el impacto de las criptomonedas sobre la estabilidad monetaria y financiera
Authors:   Universidad San Pablo-CEU (España), Calvo Bernardino Antonio , Paúl Gutiérrez Jesús ,   Universidad San Pablo-CEU (España)
Published: April 2023

The goals and instruments of economic policy have undergone changes over time, especially in periods of crisis. The global financial crisis that began in 2008 revealed the importance of financial stability as an objective of economic policy and of macroprudential policy as a key instrument to achieve it. The new digital era initiated with cryptocurrencies and with their underlying technology has important consequences for both financial stability and monetary policy, which is why a regulatory response by the economic and monetary authorities is essential, both in terms of the regulation of crypto-asset markets as well as the design of central bank digital currencies.
Más allá de la jaula identitaria. La obra de Fernando Estévez en los límites
Authors:   Escuela Superior de Turismo Iriarte (España), Estévez Hernández Pablo
Published: April 2023

"This essay is a review of notes taken for an early tribute to the figure of the Canarian anthropologist Fernando Estévez, written between 2016 and 2017. As more than five years have gone by since he passed away, we believe it is a good time to review what has been grouped together of his work here, not only because of its bibliographical and documentary nature, but also because of the open proposals around the “connector” of this revision work: to investigate the concept of identity, especially in the Canary Islands, a territory marked by the processes of globalization associated with tourism, the patrimonialization of culture and the presence of migrants negatively represented in identity narratives."
Perfil epidemiológico de sífilis adquirida na Amazônia legal de 2011 a 2020
Authors: Souza Letícia June Gonçalves , Bacelar Raissa Tereza Gonçalves , Vendramin Fabiel Spani , Souza Larissa July Gonçalves de , Camisão Caio de Oliveira , Pantoja Beatriz Santiago , Costa Izabella Rocha da , Nascimento Vitória Gabrielle Matos , Gonçalves Leila Castro
Published: April 2023

Objetivo: Descrever o perfil epidemiológico de sífilis adquirida na Amazônia Legal entre 2011 e 2020. Métodos: Trata-se de um estudo retrospectivo, analítico, observacional, e transversal, de abordagem quantitativa, a partir de dados que obtidos o Sistema de Informação de Agravos de Notificação (SINAN). O estudo é localizado na Amazônia Legal de 2011 a 2020. Resultados: A Amazônia Legal, apresentou 40926 casos confirmados de sífilis adquirida nesse período. Em 2019, verificou-se um maior número de casos com 11156 (27,26%), apesar da queda em 2020. O sexo masculino apresentou maior porcentagem com 59,01% das infecções. Houve maior prevalência entre os adultos, com 20 a 39 anos (57,20%). Sobre a escolaridade, a maior parte é ignorada (29,74%), porém, quando é preenchido na notificação há predomínio do ensino fundamental incompleto (22,18%). A raça parda é maior acometida com 68,36%. Quanto a evolução, maior número casos de cura 76,96%. Conclusão: Infere-se que na Amazônia Legal houve um aumento no número dos casos notificados entre os anos de 2011-2020. O perfil epidemiológico desses pacientes mostrou maior acometimento do sexo masculino, adultos, entre 20 e 39 anos, com ensino fundamental incompleto (quando a escolaridade era preenchida), raça parda e que evoluem com cura.