bluuebunny/crossref_metadata_2025 huggingface dataset:
The Correlation between Learning Motivation Level and Students Learning Outcomes on Science Subjects of Junior High School Class VII
Authors: Afiqah Nurul , Rahmayumita Restesa , Novriandami Aldila , Rahmad M , Yennita Yennita
Published: February 2023

Student learning motivation is the driving force in students to be able to achieve optimal learning outcomes so that the desired goals of the learning subject can be achieved. The motivation that can come from within the student himself is called intrinsic motivation and comes from outside the student's self or extrinsic motivation. The purpose of this research was to analyze the level of learning motivation of seventh-grade students of SMPN 4 Siak Hulu in science subjects. The method used in this research is a survey method with a quantitative approach. The data collection technique used a learning motivation questionnaire instrument consisting of 25 statement items and the research subject was 67 students. The data analysis technique is through descriptive analysis of the science learning motivation. The research results showed that students' learning motivation was in the high category with a score of 82.45%, while the average learning outcome was 41.1 in the low category. Thus the learning motivation of class VII students of SMPN 4 Siak Hulu is contrary to the learning outcomes obtained by students, so a better learning system is needed to provide solutions or improvements to optimal student learning outcomes by high motivation, especially in science subjects in Class VII SMPN 4 Siak Hulu.
“Validasi Data Kependudukan” Apps as A Representation of Sustainable Public Governance
Authors: Nulhaqim Soni Akhmad , Deliarnoor Nandang Alamsah , Putri Taqiya Arini
Published: February 2023

The era of digitalization has brought improvement and progress in various facets of public life, particularly in the aspect of public governance sustainability. However, as a social phenomenon, digitization in the governance process is inseparable from the population and civil registry conflicts which are intertwined. As a narrow practical example, the implementation of Validasi Data Kependudukan Apps in the Nanggerang Village of Sumedang Regency represents the empirical occurrence that digitalization represented by the Apps in the realm of public governance does not operate as expected, on the other hand, population and civil registry conflicts arise over the presence of the application implementation and its policies. This study aims to examine the application of “Validasi Data Kependudukan” in Nanggerang Village, Sumedang Regency as a social phenomenon representing sustainable public governance. A qualitative descriptive method with interview and empirical observation are conducted as  analytical tool. In a conclusion, this study reveals that the existence of a Validasi Data Kependudukan Apps is the impact of the digitalization process in the government and is a derivative of the application that has been implemented in Sumedang Regency. Throughout the implementation process, there are problems with public awareness related to the existence of this application, causing conflicts between the government and the community itself in terms of managing population documents. Accommodation is an obstacle to existing awareness problems and has an impact on the ideals of sustainable public governance.
Utilization of Microsoft Power Point Applications as Physics Learning Media Interactive On Diode Material
Authors: Abdin Abdin , Kasman Kasman , Safiuddin Asrun , Rusman La Ode
Published: February 2023

This study aims to provide new innovations in the use of Microsoft Power Point applications as interactive physics learning media on diode material. In addition, it motivates physics teachers to use technology in the implementation of learning in class. The target of this research is in the form of products resulting from the use of the Microsoft PowerPoint application as an interactive physics learning medium on diode material. This research method is research and development using a development model consisting of five stages, namely: (1) preliminary investigation; (2) design (3) realization/construction (realization/construction); (4) test, evaluation, and revision (test, evaluation, and revision); (5) implementation (implementation). The results of this study are the creation of interactive physics learning media through power point applications with the plomp model known as 5 stages, namely the initial investigation stage, design, realization/construction, test evaluation and revision and implementation. Power point interactive learning media is generally declared feasible to use after going through several trials carried out with material expert tests, media expert tests by looking at the results of the assessment of the two validators with a value obtained of 77.50 including the valid category for material experts and media experts obtaining a score of 78.46 is included in the valid category. It can also be seen that the effectiveness of learning media through the ability of student learning outcomes with a pretest score of 64.00 and a posttest score of 84.00 shows a significant increase in student learning outcomes.
Development of Impulse and Momentum Teaching Materials Using the Inquiry-Discovery Learning Model to Train Students' Creativity
Authors: Rahmah Siti , Mastuang M , Dewantara Dewi
Published: February 2023

This research is motivated by the importance of creativity abilities based on the objectives of the 2013 Curriculum. Therefore, the purpose of this study is to describe the feasibility of impulse and momentum teaching materials using the inquiry-based discovery learning model to train students' creativity. This type of research is research and development with the ADDIE model. Data were obtained through an instrument validation sheet, a lesson plan implementation sheet, and THB. Data were analyzed descriptively qualitatively, averagely, and N-gain. The results showed: (1) teaching materials were valid because the validity of the lesson plans was 3.44; teaching materials of 3.46; LKPD of 3.45; and THB of 3.42 in the very valid category, (2) teaching materials including practical because the RPP component can be implemented in a very practical category, (3) teaching materials including effective because the N-gain value is 0.69 in the medium category. Thus, the teaching materials of the inquiry-discovery learning model that have been developed are feasible to train students' creativity and can be applied in physics learning.
Teachers' Perceptions about the Implementation of Independent Learning Curriculum in Science Education
Authors: Sijabat Apriani , Juanta Palma , Gunawan Revi Gina , Lufri Lufri , Asrizal Asrizal , Hardeli Hardeli
Published: February 2023

This study aims to: Describe teachers' perceptions about the implementation of the independent learning curriculum in science education and describe the constraints felt by teachers in implementing the independent learning curriculum as well as solutions to overcome these obstacles. This type of research is a case study. The sample in this study was a science teacher at SMP DR Wahidin Sudirohusodo Medan, who were selected using a purposive sampling technique and developed using a snowball sampling technique. Data collection was carried out through interviews and questionnaires. Data analysis techniques were carried out in an interactive descriptive manner. The results of this study indicate that the teacher's perception is positive because they welcome the implementation of the independent learning curriculum, supported by adequate socialization and training so that they can apply the concept of learning science in accordance with the independent learning curriculum. Constraints experienced by teachers in the form of technical and non-technical constraints. There are several factors that become obstacles, namely, the first is the inadequate quality of the teacher's human resources, the second is that the facilities and learning resources are minimal or the infrastructure is inadequate and the teacher is clueless, the third teacher is comfortable with the old standard and has no experience in learning independent study.
Students’ Perception of the Use of Youtube in English Language Learning
Authors: Tahmina Tania
Published: February 2023

Digital learning has become a new learning mode in higher education.  Learners have become heavily dependent on YouTube channels and other technology-enhanced language learning platforms. As the YouTube platform has become an inexorable part of students’ lives, language teachers can explore their perceptions and assist them to learn English language with the help of this platform. This study aimed to find out the learners’ perception of using YouTube as a learning medium to enhance their language learning. In addition, a few pedagogical implications will also be provided. The research respondents comprised sixty-six undergraduate students of the Department of English, Jagannath University, Dhaka, Bangladesh. The data were collected using a questionnaire and semi-structured interviews. The findings revealed that the majority of the students reported that they benefitted by watching YouTube educational videos; however, in preparing assignments, being attentive while studying, and acquiring grammatical competence, learners reported that this platform had little impact. Most of the students reported that YouTube helped them to learn English vocabulary, to make learning English very interesting, to comprehend the contents of YouTube videos in a very easy manner, get relevant materials to learn English language, acquire English language better by writing down the major points in a diary while watching videos, to develop speaking skills watching YouTube videos, and to enhance listening comprehension. Therefore, based on the findings of this study, it can be concluded that the use of YouTube has numerous positive impacts on EFL learners’ English language proficiency.
Cicatricial Parietal Endometriosis: A Case Report of an Unusual Location
Authors: NSENGIYUMVA Prosper , NJOUMI Noureddine , FADILI Aziz , EL FAHSSI Mohamed , ELHJOUJI Abderrahman , ZENTAR Aziz , AIT ALI Abdelmounaim
Published: February 2023

Endometriosis of the abdominal wall is a rare pathology occurring after gynecological or obstetrical surgery. We report the case of a patient presenting with menstrual pain localised at the point of a caesarean scar. The clinical examination found a nodule located at the level of the right iliac fossa. The rest of the examination was normal. Computer tomography (CT) scan showed a nodular focus that has a long axis of 2.38 cm which is hypo dense, hence the decision to excise the lesion. After excision, the anatomo-pathological studies confirmed the diagnosis of endometriosis. An 18 months post-operative follow-up was done and there was no complication found, no recurrence of the mass or pain at the site of excision.
FACE DETECTION PADA GAMBAR DENGAN MENGGUNAKAN OPENCV HAAR CASCADE
Authors: Akil Ibnu
Published: February 2023

Abstract—OpenCV has more than 2500 optimized algorithms, which includes a comprehensive set of both classic and state-of-the-art computer vision and machine learning algorithms. It has been proven by software companies, that is why the researcher will use it for face detection application with Java programming langguage. The purpose of this paper is trying to implement machine learning library OpenCV with Haarcascade algorithm to detect face from an image and to find the weaknesess of haarcascade algorithm. Haar cascade is proven still relliable to detect face.

Abstrak— OpenCV memiliki lebih dari 2500 algoritma yang sudah dioptimisasi untuk digunakan dalam computer vision dan pembelajaran mesin. Karena keberhasilannya yang sudah dibuktikan oleh banyak perusahaan perangkat lunak, maka peneliti akan menggunakannya untuk aplikasi face detection dengan menggunakan bahasa pemrograman Java. Tujuan dari artikel ini adalah untuk mencoba menerapkan library pembelajaran mesin OpenCV algoritma Haar cascade untuk mendeteksi wajah pada sebuah gambar dan untuk mencari kelemahannya. Haar cascade telah terbukti masih cukup handal dalam mendeteksi wajah.
Editorial: An Apology and An Introduction
Authors: Lobl Liam
Published: February 2023

N/A
ANGLIČTINA V AKADEMICKOM PROSTREDÍ - English in the Academic Environment
Authors:   Pavol Jozef Šafárik University in Košice, Kolaříková Zuzana , Petruňová Helena ,   Pavol Jozef Šafárik University in Košice, Timková Renáta ,   Pavol Jozef Šafárik University in Košice
Published: February 2023

English in the Academic Environment is intended primarily for those interested in improving their academic English and is primarily designed to fulfill the needs of university students and teachers who use English in their studies, in their work activities, and in their communication with foreign colleagues and professionals. The publication offers selected phrases and sentence structures from the field of academic English, gives practical examples of the use of nominal, verbal and prepositional phrases, free and established collocations, idiomatic expressions, including translations of some selected phrases. It also highlights some common mistakes in the use of English in an academic environment, which are a manifestation of incorrect or insufficiently acquired linguistic resources and, last but not least, a consequence of the linguistic influence of Slovak. Odborná publikácia Angličtina v akademickom prostredí je určená predovšetkým pre záujemcov o zdokonalenie sa v oblasti akademického anglického jazyka a primárne je zostavená tak, aby slúžila pre potreby vysokoškolských študentov a učiteľov, ktorí anglický jazyk používajú pri svojom štúdiu, v rámci pracovných aktivít, pri komunikácii so zahraničnými kolegami a odborníkmi. Odborná publikácia ponúka vybrané slovné spojenia a vetné štruktúry z oblasti akademickej angličtiny, uvádza praktické príklady použitia menných, slovesných a predložkových slovných spojení, voľných a ustálených kolokácií, idiomatických výrazov, vrátane prekladov pri niektorých vybraných spojeniach. Zároveň upozorňuje na niektoré časté chyby pri používaní angličtiny v akademickom prostredí, ktoré sú prejavom nesprávne alebo nedostatočne osvojených jazykových prostriedkov a v neposlednom rade aj dôsledkom jazykového vplyvu slovenčiny. URL: https://unibook.upjs.sk/
Identificación del impacto ambiental y sus consecuencias en la ciudad de Huánuco
Authors: Contreras-Zarco Ella V.
Published: February 2023

En el presente estudio se ha identificado el impacto ambiental y sus consecuencias, ocurridos en la ciudad de Huánuco, utilizando el método cualitativo no experimental de tipo geográfico basado en la observación, la descripción y la explicación. El objetivo fue conocer y distinguir el impacto ambiental producido por los agentes naturales y la acción humana que han alterado el medio ambiente en la ciudad. El resultado indica un impacto negativo sobre el ecosistema, aire, agua, paisaje, la salud de la población y las posibilidades de contingencias físicas que amenazan a la ciudad. En conclusión, esta situación presenta un serio problema que se evidencia por el deterioro y la degradación de la biodiversidad y la ocupación de áreas vulnerables para viviendas en los alrededores de la ciudad.
Aplicaciones trigonométricas en modo heurístico y su impacto en el desarrollo cognitivo de adolescentes en Cauri
Authors: Paragua-Macuri Carlos A. , Paragua-Macuri Melissa G. , Paragua-Morales Melecio , Norberto-Chávez Liz A. , Anaya-Huaranga Cleycy
Published: February 2023

En el estudio se probó que las aplicaciones trigonométricas en modo heurístico impactó positivamente en el desarrollo cognitivo de los adolescentes en Cauri, en coherencia con el objetivo general formulado para el caso, en ese sentido, la variable autónoma se aplicó sobre la variable dependiente para producir un efecto de mejora; el diseño del estudio fue el cuasiexperimental y la población de estudio estuvo conformado por 335 jóvenes de Cauri y la muestra no aleatoria fue de 46 que estaban asignados de la manera siguiente: 20 en el conjunto empírico y 26 como conjunto de control. Los datos se recolectaron con tres pruebas evaluativas tipo escrito, cada uno con 10 proposiciones para desarrollar; los datos obtenidos se procesaron con Excel y los estadígrafos resultantes corresponden a la estadística descriptiva y estadística inferencial, cuyo análisis, evaluación e interpretación permitió la conclusión siguiente: El valor T de prueba igual a 6,75, se ubicó a la diestra de la t crítica igual a 1,645, para 95% de confiabilidad y 5% de significancia, que es la franja de impugnar; por lo tanto, se impugnó la suposición nula y se aceptó la suposición de pesquisa, porque, se tenía señas suficientes que mostraban que las aplicaciones trigonométricas en modo heurístico impactaban positivamente en el desarrollo cognitivo de adolescentes en Cauri.
Metastasis of Ductal Breast Carcinoma to the Vagina: A Case Report
Authors: Soares Leila Cristina , Andrade de Camaret Anna Candida
Published: February 2023

Primary cancers of the vagina are rare, and so vaginal tumours are likely to represent metastasis from another site. Although breast cancer is a common malignancy, it rarely gives rise to vaginal metastases. In this study, we report a case of vaginal cancer diagnosed in a 65-year-old woman. Clinical examination showed the presence of a breast tumour, and ductal breast carcinoma was diagnosed by biopsy. Analysis of the vaginal tumour suggested that it was a metastasis. It was through the detection of the secondary tumour, complete gynaecologic examination, and complementary examinations that the primary site was correctly identified.
CHINA'S CUSTOMS AND TARIFF POLICY AND PROSPECTS FOR A FULL-FLEDGED FTA BETWEEN THE EAEU AND CHINA
Authors:   Institute for the Development of Integration Processes of the Russian Foreign Trade Academy of the Ministry of Economic Development of the Russian Federation (IDIP RFTA), Moscow, Russian Federation, GIVARGIZOVA LIDIA
Published: February 2023

Under the conditions of sanctions pressure on the Russian economy, the expansion and strengthening of foreign economic relations with friendly countries becomes important. The issues of technical barriers, new supply chain solutions, customs cooperation, and industry cooperation become relevant. Given the sanctions pressure on the Russian market, and subsequently spread to the market of the Eurasian Economic Union, it becomes necessary to expand trade and economic relations with friendly countries, focusing on those countries with which trade agreements have been signed and major trading partners of the Eurasian Economic Union, also becomes a trend the signing of a free trade zone agreement. One of the important countries for the Eurasian Economic Union, given the volume of mutual trade, is China. Agreement on trade and economic cooperation between the Eurasian Economic Union and the People's Republic of China can serve as a basis for a free trade zone with China. The article analyzes trade turnover between Eurasian Economic Union and People's Republic of China since 2015 (the year of EEU foundation); dynamics of most-favored-nation treatment in China; applied ad valorem and specific rates of customs duties; countries, which concluded, trade agreements with China, as well as bound and applied Chinese tariffs on certain product groups and tariff quotas.
PRACTICE AND TRENDS OF LEGAL REGULATION OF STABLECOINS ON THE EXAMPLE OF USA AND EU LEGISLATION
Authors:   RUDN University, Moscow, Russian Federation, ODINTSOV STANISLAV , ZYRYANOVA OLGA
Published: February 2023

The development of the economy and society contributes to the comprehensive introduction of digital technologies and the active development of new objects of law. However, the high level of volatility of digital (virtual) financial assets has led to the need to link cryptocurrencies to a physical asset, resulting in a new type of digital secured asset called a stablecoin. The purpose of the study is to study the features of legal regulation of stablecoins on the example of USA and EU legislation, including analyzing various types, as well as the role they play in the tokenization system. There was not much research in the field of law about stablecoins until recently, but everything has changed due to an increase in the number of transactions using stablecoins. However, the issue of legal regulation of stablecoins remains relevant in different jurisdictions, despite some attempts to regulate digital (virtual) assets. As a result of the study, it became obvious that new technologies are rapidly developing, there is a need to adapt them to the legal system because stablecoins will somehow influence the monetary policy of states and in order for various sectors of the economy to carry out their activities, subjects need detailed legal regulation of this part of property turnover.
PENDUGAAN FENOMENA UPWELLING BERDASARKAN VARIABILITAS SUHU PERMUKAAN LAUT DAN KLOROFIL-A DI PERAIRAN TELUK BONE, INDONESIA
Authors: Alfrediansyah Roni , Asmadin Asmadin , Ira Ira
Published: February 2023

Produktivitas suatu perairan dapat digambarkan berdasarkan kondisi oseanografi seperti arus, suhu permukaan laut dan klorofil-a. Beberapa parameter oseanografi tersebut dapat dijadikan acuan untuk menduga kejadian upwelling pada suatu perairan. Penelitian ini bertujuan untuk mengestimasi Kawasan upwelling berdasarkan variabilitas Suhu Permukaan Laut dan Klorofil-a secara spasial     dan temporal di perairan Teluk Bone, termasuk menilai kondisi arus permukaan lautnya. Data deret waktu yang dikumpulkan merupakan data bulanan periode 2019-2020. Data bulanan Suhu Permukaan Laut dan Klorofil-a menggunakan data Level 3 citra satelit aqua MODIS yang diunduh melalui laman https://oceancolor.gsfc.nasa.gov/. Data arus permukaan diunduh pada laman https://marine.copernicus.eu/. Data bulanan Level 3 satelit aqua MODIS tersebut diekstrak menggunakan perangkat lunak SeaDAS 7.2. Data arah dan kecepatan arus diekstrak menggunakan Pyferret. Analisis spasial untuk mengestimasi daerah upwelling menggunakan teknik tumpang susun layer berdasarkan algoritma estimasi Suhu Permukaan Laut dan Klorofil-a. Hasil penelitian menunjukan bahwa data bulanan suhu permukaan Laut berkisar antara 25,74–33,76°C pada 2019 dan berkisar antara 26,85–34,82°C pada 2020. Estimasi konsentrasi Klorofil-a mencapai kisaran 0,06-6,53 mg/m3 pada 2019 dan berkisar 0,07–7,09 mg/m3 pada 2020. Pada tahun 2019, fenomena upwelling di perairan Teluk Bone diduga terjadi pada musim Timur (Juni, Juli, Agustus) dengan kriteria upwelling lemah dan sedang. Sepanjang tahun 2019-2020, kondisi kecepatan arus permukaan lautnya cenderung lemah mencapai nilai 0,02-0,16 m/s.  Fenomena upwelling di perairan Teluk Bone diduga kuat terjadi pada periode Musim Timur (Juni, Juli, Agustus) Tahun 2019. Kondisi ini ditandai dengan relatif rendahnya nilai suhu permukaan laut dan tingginya konsentrasi klorofil-a dibandingkan dengan Musim lainnya. Kondisi kecepatan arus permukaan di perairan Teluk Bone cenderung lemah.Kata kunci: Arus Permukaan Laut, Klorofil-A, Suhu Permukaan Laut, Teluk Bone, Upwelling
KOMPOSISI DAN KEPADATAN GASTROPODA DAN BIVALVIA PADA EKOSISTEM LAMUN DI PERAIRAN DESA LANGARA BAJO KECAMATAN WAWONII BARAT, KABUPATEN KONAWE KEPULAUAN
Authors: Saprduddin Sapruddin , Ira Ira , Rahmadani Rahmadani
Published: February 2023

Desa Langara Bajo merupakan kawasan pesisir yang banyak dijumpai biota laut seperti gastropoda dan bivalvia. Tingginya tingkat pemanfaatan gastropoda dan bivalvia serta aktivitas masyarakat lainnya dikhawatirkan dapat menyebabkan habitat dan kondisi lingkungan bagi kehidupan gastropoda dan bivalvia terganggu. Tujuan dari penelitian ini adalah untuk mengetahui komposisi dan kepadatan gastropoda dan bivalvia pada ekosistem lamun di Perairan Desa Langara Bajo, Kecamatan Wawonii Barat, Kabupaten Konawe Kepulauan. Persentase tutupan lamun diukur untuk mendapatkan kondisi tutupan lamun di lokasi penelitian. Pengambilan data dilakukan pada bulan September di 3 titik stasiun pengambilan data. Metode yang digunakan dalam penelitian ini yaitu metode transek kuadrat. Transek garis dibentangkan sepanjang sepanjang 100 meter, kemudian transek kuadrat ukuran 1x1 meter diletakkan secara zig-zag. Hasil penelitian ini ditemukan 6 jenis gastropoda yaitu Cypraea tigris, Polineces aurantius, Nerita polita, Cymbiola aulica, Strombus labiatus dan Strombus urceus. Komposisi jenis gastropoda tertinggi ditemukan pada stasiun III, dengan jenis S. urceus sebanyak 54%, sedangkan komposisi jenis terendah terdapat pada stasiun I sebanyak 2% dengan jenis C. tigris. Kepadatan gastropoda yang tertinggi berada pada Stasiun II dengan nilai 5,06 ind/m2 dan kepadatan gastropoda terendah berada pada Stasiun III dengan nilai  2,84 ind/m2. Komposisi jenis bivalvia yang ditemukan sebanyak dua jenis, yaitu Clinocardium ciliatum dan Argopecten hirasei. Komposisi jenis bivalvia tertinggi terdapat pada Stasiun II dari jenis C. ciliatum sebanyak 57%, sedangkan komposisi jenis bivalvia terendah terdapat pada Stasiun III dari jenis  C. ciliatum  sebanyak 53%. Jumlah kepadatan bivalvia yang tertinggi berada pada Stasiun II yaitu 1,06 ind/m2, sedangkan kepadatan bivalvia yang terendah pada Stasiun III yaitu 0,57 ind/m2. Kategori kondisi lamun yang ditemukan jarang, sedang, dan padat, dimana persentase tutupan lamun tertinggi ditemukan pada Stasiun II dengan kategori padat (65,7%) dan persentase tutupan lamun terendah terdapat pada Stasiun III dengan kategori jarang (24,2%).Kata kunci : Bivalvia, Desa Langara Bajo, Gastropoda, Kepadatan, Komposisi Jenis, Lamun, dan Perairan
POLA ARUS DAN KARAKTERISTIK TOPOGRAFI PADA KAWASAN TELUK MELEURA KABUPATEN MUNA, SULAWESI TENGGARA
Authors: Mida Fitra , Asmadin Asmadin , Takwir Amadhan
Published: February 2023

Informasi hidro-oseanografi seperti arus dan batimetri suatu perairan sangatlah dibutuhkan misalnya dalam pengembangan wisata. Penelitian ini bertujuan untuk mengetahui kecepatan dan pola arus serta bentuk karakteristik topografi di Teluk Meleura. Penelitian ini dilaksanakan pada Agustus 2020 bertempat di perairan Teluk Meleura, Kabupaten Muna, Sulawesi Tenggara. Pengambilan data arus menggunakan layangan arus dengan metode langrangian dan pengambilan data batimetri menggunakan Map Sounder Garmin GPS Map 421 s dengan metode pemeruman. Pengolahan batimetri menggunakan metode kriging. Data tersebut diklasifikasi berdasarkan klasifikasi Van zuidam. Hasil penelitian menunjukkan bahwa nilai MSL diperoleh sebesar 140 cm. Arah angin pada Agustus 2020 lebih dominan dari arah Timur dan Timur Laut. Kecepatan arus pada saat pasang menunjukkan bahwa kecepatan arus terendah yaitu 0,06 m/s dan tertinggi yaitu 0,21 m/s dengan arah arusnya ke arah Barat Daya dan saat surut kecepatan arus terendah yaitu 0,04 m/s dan kecepatan arus tertinggi yaitu 0,16 m/s dengan arah arusnya kearah Timur dan Utara. Karakteristik topografi dasar perairan Teluk Meleura merupakan perairan dangkal dengan kedalaman 0-24 m. Bentuk topografi pantai maupun dasar perairan bervariasi berdasarkan klasifikasi kemiringan pantai mulai dari lereng datar hingga curam dengan tingkat persentase kelerengan pantai berkisar 0,93-69,32%.Kata kunci : Arah angin, Arus, Batimetri, Pasut, Teluk Meleura.
DISTRIBUSI SPASIAL DAN PREFERENSI HABITAT GASTROPODA DI KAWASAN HUTAN MANGROVE SEGARA ANAKAN, CILACAP
Authors: Kresnasari Dewi , Mei Gitarama Arbi , Subhan Subhan
Published: February 2023

Ekosistem mangrove secara ekologis berperan sebagai spawning ground, nursery ground dan feeding ground berbagai macam organisme. Salah satu biota yang terletak pada ekosistem mangrove Segara Anakan adalah Gastropoda. Fauna ini memegang peranan penting dalam jaring-jaring makanan dan proses dekomposisi. Hutan mangrove Segara Anakan mengalami perubahan akibat faktor alami (sedimentasi) dan faktor antropogenik. Jika hal ini diabaikan tentu saja akan mempengaruhi pola distribusi dan preferensi habitat Gastropoda. Tujuan penelitian ini adalah untuk mengetahui komposisi, kelimpahan, distribusi dan preferensi habitat Gastropoda pada hutan mangrove Segara Anakan, Cilacap. Penelitian dilakukan pada bulan Agustus-Oktober 2022 dengan periode pengambilan dua minggu sekali. Metode sampling yang digunakan yaitu purposive sampling. Dua pemilihan lokasi berdasarkan perbedaan karakteristik yaitu : St A (bagian timur Segara Anakan, salinitas 10-20 ‰, kerapatan mangrove Rhizophora sp. rapat, dekat dengan pelabuhan) dan St B (bagian barat Segara Anakan, salinitas 5-10‰, kerapatan mangrove Rhizophora sp. jarang, dekat dengan pemukiman penduduk). Pada setiap stasiun penelitian ditentukan lima titik pengambilan sampel, setiap titik terdapat tiga plot pengambilan sampel. Data yang diperoleh dianalisis dengan PCA (Principal Component Analysis). Berdasarkan hasil penelitian diperoleh komunitas gastropoda pada St A sebanyak 8 famili dan St B 6 famili. Famili yang paling mendominasi pada kedua stasiun pengamatan yaitu Potamididae dan Neritidae. Kelimpahan tertinggi terdapat pada St B sebesar 290 ind/m2, sedangkan St A berjumlah 180 ind/m2. Pola distribusi gastropoda termasuk dalam kriteria mengelompok dan merata. Dari hasil analisis PCA kelimpahan Gastropoda berhubungan erat dengan kandungan oksigen terlarut. Hal ini terkait peran oksigen dalam pemenuhan respirasi dan dekomposisi bahan organik. Kata kunci : Gastropoda, Mangrove, Pola distribusi, Preferensi habitat, Segara Anakan
Financial Stress, Student’s Positivity and their Academic Achievement: Mediating Role of Family Conflicts
Authors: Iqbal Naila , Nadeem Masood , Perveen Abida , Iqbal Sadia , Malik Areeba A.
Published: February 2023

The main aim of present study is to test the associations between Financial stress, Student’s positivity and their academic achievement and family conflicts. Moreover, it also aimed to test the role of family conflicts as a mediator between financial stress and student’s positivity and their academic achievement. Our sample comprised of 259 students using purposive convenient sampling technique. For data collection we used Financial Stress Scale, Positivity Scale, Brief Family Relationship Scale and Academic Achievement was measured by their Grades in School, College and University. Findings indicate that there is significant and negative relationship between financial stress and student’s positivity and their academic achievement. Whereas results also show that there is significant relationship between financial stress and family conflict but there is negative relationship between family conflict and student’s positivity. Furthermore, family conflicts act as a partial mediator between financial stress and student’s positivity and student’s academic achievement. This study is beneficial in finding ways to enhance the positivity of students in time of economic crisis so that they can deal with negative outcomes of their behaviors.
Emotional and Family Functioning of Middle-Aged Mothers during the COVID-19 Pandemic
Authors: Liaqat Maryam , Khalid Ruhi
Published: February 2023

Present study was carried out to investigate the relationship between emotional functioning and family functioning of middle-aged mothers during the COVID-19 pandemic. Additionally, a mixed method approach was used in the second phase of study to explore factors contributing to family conflict and family cohesion. A purposive sample of 100 middle-aged mothers (age ranged between 40-45 years) was approached for this study. The participants were given the Trait Emotional Intelligence Questionnaire-Short Form (Cooper & Pertrides, 2010) for measuring emotional functioning and Covid-19 Household Environment Scale (Behar-Zusman et al., 2020) for measuring family functioning. The results revealed a significant positive correlation between emotional functioning, family cohesion, and a significant negative correlation between emotional functioning and family conflict. Moreover, it was observed that family functioning of mothers living in nuclear family system was better than those living in joint family system. The qualitative phase of the study revealed that factors related to finances, household work, limited resources, relationship deterioration etc. contributed to family conflict. While factors of increase quality time, emotional responsiveness, communication, and communal problem solving, contributed to family cohesion. The findings provide comprehensive insight into the characteristics of family functioning in the context of Covid-19 pandemic.
Basic Human Values, Right-Wing Authoritarianism and Psychological Well-Being Among University Students
Authors: Siraaj Maryam , Hassan Bushra , Fazaldad Ghazala , Iqbal Nazia , Ehsan Neelam
Published: February 2023

The present study aimed to measure the relationship between basic human values, right-wing authoritarianism and psychological well-being among university students. The Portrait Values Questionnaire (Schwartz, 2003), Right-Wing Authoritarianism Scale (Altemeyer, 2006) and Ryff’s Psychological Well-Being Scale (Ryff & Keyes, 1995) were used to collect data. Sample comprised of 250 students including (men = 55, women = 195) from different universities of Rawalpindi and Islamabad. The findings indicated that positive relationship existed between two orthogonal (openness to change vs. conservation & self-transcendence vs. self-enhancement) of basic values and psychological well-being and negative relationship was found between right-wing authoritarianism and two orthogonal dimensions (openness to change vs conservation & self-transcendence vs self-enhancement) of values. It was also observed that positive relationship exists between right-wing authoritarianism and psychological well-being. Nonsignificant gender differences were found on given study variables. The results of the given study can provide help in the educational sector for devising programs that can help inculcating certain values in the students in result enhancing their psychological well-being and general view of life.
Vacant or viable?
Authors: Käpplinger Bernd , St. Clair Ralf
Published: February 2023

Beginning with Boeren’s (2018) or Rubenson & Elfert’s (2019) claims of under-recognition of quantitative methodology in adult education, authors use the ecological niche from biology as a metaphorical and heuristic model in order to consider the mechanisms determining the viability of research methodologies in education for adults. The authors discuss ecosystem factors affecting research methodologies and consider the situations of Germany and Canada to illustrate application of the niche metaphor. The conclusion stresses the complementary relevance and integrative value of different forms of research. Addressing diverse questions requires diverse methodologies and a rich ecosystem of resources and research capabilities.
Laminar VASO fMRI in focal hand dystonia patients
Authors: Huber Laurentius , Kassavetis Panagiotis , Gulban Omer Faruk , Hallett Mark , Horovitz Silvina G.
Published: February 2023

Focal Hand Dystonia (FHD) is a disabling movement disorder characterized by involuntary movements, cramps and spasms. It is associated with pathological neural microcircuits in the cortical somatosensory system. While invasive preclinical modalities allow researchers to probe specific neural microcircuits of cortical layers and columns, conventional functional magnetic resonance imaging (fMRI) cannot resolve such small neural computational units. In this study, we take advantage of recent developments in ultra-high-field MRI hardware and MR-sequences to capture altered digit representations and laminar processing in FHD patients. We aim to characterize the capability and challenges of layer-specific imaging and analysis tools in resolving laminar and columnar structures in clinical research setups. We scanned N = 4 affected and N = 5 unaffected hemispheres at 7T and found consistent results of altered neural microcircuitry in FHD patients: 1) In affected hemispheres of FHD patients, we found a breakdown of ordered finger representation in the primary somatosensory cortex, as suggested from previous low-resolution fMRI. 2) In affected primary motor cortices of FHD patients, we furthermore found increased fMRI activity in superficial cortico-cortical neural input layers (II/III), compared to relatively weaker activity in the cortico-spinal output layers (Vb/VI). Overall, we show that layer-fMRI acquisition and analysis tools have the potential to address clinically-driven neuroscience research questions about altered computational mechanisms at the spatial scales that were previously only accessible in animal models. We believe that this study paves the way for easier translation of preclinical work into clinical research in focal hand dystonia and beyond.
Identifying consumer openness to new ingredients: A conjoint study on consumer segments in the UK
Authors: Altintzoglou Themistoklis , Heide Morten
Published: February 2023

The aim of this study was to explore consumer acceptance of food products that make use of ingredients from underutilized marine species. As these species are not commonly used as ingredients in food products, a goal of this study was to explore how relevant personality factors influenced the acceptance of such products. This would be achieved by (a) identification of consumer segments based on the personality factors–domain specific innovativeness, food technology neophobia, health involvement, and disgust, (b) description of the main characteristics of these consumer segments, and (c) comparing how these consumer segments responded to information about the potential products, origin species, ingredients, and benefits associated with these ingredients. The method used in this study was a consumer survey (n = 490) that led to a consumer segmentation, followed by a conjoint experiment. The results show that ingredient source was the most important attribute. Yet, as many of the ingredient sources were novel, both for the carrier product and the consumer, the important part was not exposing consumers to the species that functioned as the ingredient source. The younger female consumers of the Safe Player group were most focused on the ingredient source, whereas the older male segment, called Open Minded, found the carrier product more important. The final segment, the Innovator, found all of the attributes of almost equal importance.
Developmental deficits of MGE-derived interneurons in the Cntnap2 knockout mouse model of autism spectrum disorder
Authors: Ahmed Noorya Yasmin , Knowles Rhys , Liu Lixinyu , Yan Yiming , Li Xiaohan , Schumann Ulrike , Wang Yumeng , Sontani Yovina , Reynolds Nathan , Natoli Riccardo , Wen Jiayu , Del Pino Isabel , Mi Da , Dehorter Nathalie
Published: February 2023

Interneurons are fundamental cells for maintaining the excitation-inhibition balance in the brain in health and disease. While interneurons have been shown to play a key role in the pathophysiology of autism spectrum disorder (ASD) in adult mice, little is known about how their maturation is altered in the developing striatum in ASD. Here, we aimed to track striatal developing interneurons and elucidate the molecular and physiological alterations in the Cntnap2 knockout mouse model. Using Stereo-seq and single-cell RNA sequencing data, we first characterized the pattern of expression of Cntnap2 in the adult brain and at embryonic stages in the medial ganglionic eminence (MGE), a transitory structure producing most cortical and striatal interneurons. We found that Cntnap2 is enriched in the striatum, compared to the cortex, particularly in the developing striatal cholinergic interneurons. We then revealed enhanced MGE-derived cell proliferation, followed by increased cell loss during the canonical window of developmental cell death in the Cntnap2 knockout mice. We uncovered specific cellular and molecular alterations in the developing Lhx6-expressing cholinergic interneurons of the striatum, which impacts interneuron firing properties during the first postnatal week. Overall, our work unveils some of the mechanisms underlying the shift in the developmental trajectory of striatal interneurons which greatly contribute to the ASD pathogenesis.
Research on distribution characteristics of sedimentary microfacies of a system tract under a high resolution sequence framework: A case study of Qixia Formation in Gaomo block, central Sichuan
Authors: Liu Shimin , Zhou Lu , Guan Xu , Chen Xiao , Wu Yong , Tan Lufan , Qiu Zehua , Qian Yujie , Zhou Jianghui
Published: February 2023

In conventional sequence stratigraphy research, owing to the limitation of the resolution of seismic data, strata can only be divided into third order sequences at most on the seismic profile. In this study, the vertical fourth order sequence is divided using the high vertical resolutions of gamma ray (GR), uranium (U), thorium (Th), and potassium (K) curves in the logging curves, and the sequence divided in the depth system is then accurately superimposed on the seismic profile through one dimensional forward modelling. Subsequently, through three dimensional Fourier transform technology, the dip angle and azimuth information of the seismic data in the entire region are scanned to obtain the horizons. Through the progradation and retrogradation characteristics of sediments in the Wheeler system, guided by the sequence framework, the horizontal interpretation of the fourth order sequence system tract is conducted in the entire region. Finally, through attribute optimisation, the root mean square amplitude attribute, with the highest degree of coincidence with well data, is selected to study the evolution characteristics of sedimentary microfacies in different periods in the four system tracts. Notably, the strata of Qixia Formation in the study area can be divided into two-fourth order sequences, wherein SQ1 comprised transgressive systems tract 1 (TST1) and high stand systems tract 1 (HST1), and SQ2 comprised TST2 and HST2. With the change in the relative sea level cycle, the strata of Qixia Formation in the study area are developed by overlapping the sedimentary microfacies of the interbank depression, interbank sea, and intraplatform shoal from bottom to top.
Dieting reverses histone methylation and hypothalamic AgRP regulation in obese rats
Authors: Rapps Kayla , Kisliouk Tatiana , Marco Asaf , Weller Aron , Meiri Noam
Published: February 2023

Introduction

Although dieting is a key factor in improving physiological functions associated with obesity, the role by which histone methylation modulates satiety/hunger regulation of the hypothalamus through weight loss remains largely elusive. Canonically, H3K9me2 is a transcriptional repressive post-translational epigenetic modification that is involved in obesity, however, its role in the hypothalamic arcuate nucleus (ARC) has not been thoroughly explored. Here we explore the role that KDM4D, a specific demethylase of residue H3K9, plays in energy balance by directly modulating the expression of AgRP, a key neuropeptide that regulates hunger response.

Methods

We used a rodent model of diet-induced obesity (DIO) to assess whether histone methylation malprogramming impairs energy balance control and how caloric restriction may reverse this phenotype. Using ChIP-qPCR, we assessed the repressive modification of H3K9me2 at the site of AgRP. To elucidate the functional role of KDM4D in reversing obesity via dieting, a pharmacological agent, JIB-04 was used to inhibit the action of KDM4D in vivo.

Results

In DIO, downregulation of Kdm4d mRNA results in both enrichment of H3K9me2 on the AgRP promoter and transcriptional repression of AgRP. Because epigenetic modifications are dynamic, it is possible for some of these modifications to be reversed when external cues are altered. The reversal phenomenon was observed in calorically restricted rats, in which upregulation of Kdm4d mRNA resulted in demethylation of H3K9 on the AgRP promoter and transcriptional increase of AgRP. In order to verify that KDM4D is necessary to reverse obesity by dieting, we demonstrated that in vivo inhibition of KDM4D activity by pharmacological agent JIB-04 in naïve rats resulted in transcriptional repression of AgRP, decreasing orexigenic signaling, thus inhibiting hunger.

Discussion

We propose that the action of KDM4D through the demethylation of H3K9 is critical in maintaining a stable epigenetic landscape of the AgRP promoter, and may offer a target to develop new treatments for obesity.
Design and optimization of lithium-ion battery protector with auxetic honeycomb for in-plane impact using machine learning method
Authors: Biharta Michael Alfred Stephenson , Santosa Sigit Puji , Widagdo Djarot
Published: February 2023

The lithium-ion battery is becoming a very important energy source for vehicles designated as electric vehicles. This relatively new energy source is much more efficient and cleaner than conventional fossil fuel. However, lithium-ion batteries have a high risk of fire during a crash, where the large deformation on the battery during the crash may cause thermal runaway. This research explores that idea by studying the design and optimization of sandwich-based auxetic honeycomb structures to protect the pouch battery cells for the battery pack system of electric vehicles undergoing axial impact load using machine learning methods. The optimization was done using Artificial Neural Network (ANN), and Non-Dominated Sorting Genetic Algorithm Type II (NSGA-II) combined with Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). Artificial Neural Network predicted the sandwich structure’s specific energy absorption (SEA) and the maximum battery stress during deformation. NSGA-II combined with TOPSIS optimized the design using both of the predictors. Both creations of the training data and validation were done using the non-linear finite element method. The optimized design has a geometric shape of Double-U, a length of 6 mm, a width of 4.2 mm, cross section’s thickness of 0.6 mm, and consists of 1 layer. The optimum design has a specific energy absorption of 47,997.84 J and can maintain the battery’s von Mises stress to a maximum of 43.16 MPa, well below the designated battery’s von Mises stress limit of 67.97 MPa.
Sustainable growth, input factors, and technological progress in agriculture: Evidence from 1990 to 2020 in China
Authors: Tong Wenxia , Qin Guangke , Xu Yanmin , Fu Chen
Published: February 2023

This paper decomposes agricultural input factors into labor, land, fertilizer, and farm machinery in 31 provinces of China from 1990 to 2020. This paper analyzes the input factor’s contribution rates to China’s agricultural growth using the stochastic frontier model. The empirical results indicate that the contribution rate of input factors in China’s agricultural growth has weakened, with decreasing contribution rate of labor, an increasing contribution rate of fertilizer and machinery, and decreasing contribution rate of the land year by year. The contribution rate of technological progress is increasing, and there is room for improvement. In addition, technological progress and input factors alternately lead to the time of policy change in China. The research also shows that the prerequisite for promoting rural supply-side reform and achieving sustained agricultural growth is ensuring a stable supply of input factors, focusing on promoting agricultural technological progress.