bluuebunny/crossref_metadata_2025 huggingface dataset:
Clustering Untuk Menentukan Indeks Kesejahteraan Rakyat di Provinsi Jawa Tengah 2022 Menggunakan Metode Fuzzy C-Means
Authors: Indra Firmansyah  , Salmaa Fauziah  , Hanif Nur Ibrahim  , Fatkhurokhman Fauzi  , Tiani Wahyu Utami
Published: December 2023

Kesejahtraan rakyat merupakan salah satu tujuan negara yang tercantum pada Undang-undang Dasar 1945. Dalam meningkatakan kesejahtraan rakyat, tentunya perlu adanya pembangunan yang merata. Untuk menjalankan program pembangunan yang merata, harus dilakukan identifikasi berdsarkan karaktaeristik tingkat kesejahtraan rakyat berdasarkan variabel-variabel yang telah ditentukan agar dalam membuat strategi dan mengambil kebijakan untuk meningkatkan kesejahtraan rakyat dapat tepat sasaran dan optimal. Tujuan dari penelitian ini adalah untuk mengetahui pengelompokkan 35 Kabupatan/Kota di Provinsi Jawa Tengah dan k arakteristik dari setiap kelompok berdasarkan indeks kesejahtraan rakyat. Berdasarkan hasil analisis yang dilakukan, bahwa terdapat 35 Kabupaten/Kota di Provinsi Jawa Tengah dapat membentuk 4 kelompok (cluster), dimana pada cluster 0 beranggotakan 8 Kabupaten/Kota dengan karakteristik Jumlah peduduk miskin tinggi, Daya beli cenderung rendah, rata-rata lama sekolah rendah, angka harapan hidup sangat rendah. Pada cluster 1 terdapat 12 Kabupaten/Kota dengan karakteristik Nilai PDRB sangat tinggi, angka pengangguran relatif rendah, angka lama sekolah relatif tinggi. Pada cluster 2 terdapat 5 Kabupaten/Kota dengan karakteristik Nilai PDRB sangat rendah, jumlah penduduk miskin sangat rendah, daya beli sangat tinggi, kepemilikan rumah rendah, kepadatan penduduk tinggi, daya beli tinggi, angka melek huruf tinggi, rata-rata lama sekolah tinggi, dan yang terakhir cluster 3 terdapat 10 Kabupaten/Kota dengan karakteristik PDRB rendah, kepadatan penduduk sangat rendah, kepemilikan rumah sangat tinggi, daya beli cenderung rendah.
Pemodelan Mutu Kualitas Air Sungai di Daerah Istimewa Yogyakarta Tahun 2020 dengan Pendekatan Regresi Logistik Ordinal
Authors: Fahrul Raditiar Yuliardi  , Indah Manfaati Nur  , Quinsy Pranandira Rilvandri  , Bravina Aulia Damiri
Published: December 2023

Penelitian ini bertujuan untuk mengidentifikasi indikator-indikator yang mempengaruhi kualitas air sungai di Daerah Istimewa Yogyakarta. Metodologi yang digunakan dalam penelitian ini adalah kuantitatif, dengan memanfaatkan sumber data sekunder dari Badan Lingkungan Hidup Yogyakarta, khususnya pengukuran tahunan parameter kualitas air sungai pada tahun 2020. Kualitas air dianalisis berdasarkan beberapa parameter kimia. Pencemaran sungai ditunjukkan dengan nilai kualitas air yang melebihi baku mutu, seperti Total Suspended Solids (TSS), BOD, COD, dan Total Coliform. Analisis kualitas air sungai menunjukkan bahwa faktor yang berpengaruh signifikan adalah Total Suspended Solids (TSS), BOD, COD, dan Total Coliform. Tiga model dibentuk dengan menggunakan regresi logistik ordinal.
Poverty Level Grouping in West Java Province with the K-Means Clustering Method
Authors: Amelia  , Nur Indah Manfaati , Rizky Muhammad , Milasari Septiana Putri
Published: December 2023

Poverty in a region will have an impact on hampering national development. Poverty is an economic disease that is often faced by every country, including Indonesia. According to information obtained from the Central Bureau of Statistics, we can gather data on the poverty rate in all provinces of Indonesia, with a particular focus on the province of West Java. West Java province is one of the provinces with the highest population density on the island of Java, which is ranked 2nd after the province of DKI Jakarta and ranks 4th for the province with a high percentage of poor people after DI. Yogyakarta, Central Java, and East Java. Consequently, it is crucial for the regional government to identify areas with high, moderate, or low poverty rates. This information will enable the local government to formulate appropriate policies and prioritize interventions to address poverty effectively. In this study, the K-Means clustering method was used to classify poverty rates based on two variables, namely the community development index and the open unemployment rate using the help of RStudio software. The findings indicated that the application of the elbow method in West Java province resulted in the identification of three distinct clusters of districts/cities that stood out as the most prominent. Cluster 1 (districts/cities with relatively high poverty rates), cluster 2 (districts/cities with low poverty rates), cluster 3 (districts/cities with high poverty rates). Regencies/cities that fall into the category with a high poverty rate are Sukabumi, Cianjur, Garut, Tasikmalaya, Ciamis, Kuningan, Cirebon, Majalengka, Indramayu, Subang, West Bandung, and Pangandaran.
EVALUASI PROGRAM KAMPUNG TANGGUH WANI JOGO SUROBOYO DI KELURAHAN PRADAH KALIKENDAL KECAMATAN DUKUH PAKIS KOTA SURABAYA
Authors: Yovanka Christina , Prabawati Indah
Published: December 2023

Pemerintah Kota Surabaya melalui Perwali Surabaya No. 28 Tahun 2020 Tentang Pedoman Tatanan Normal Baru Pada Kondisi Pandemi Corona Virus Disease 2019 (Covid-19) Di Kota Surabaya Pasal 32 menerapkan program Kampung Tangguh Wani Jogo Suroboyo sebagai upaya pencegahan penyebaran Covid-19. Program tersebut merupakan langkah pencegahan penyebaran Covid-19 dalam lingkup RW/RT. Penelitian ini dilakukan di Kelurahan Pradah Kalikendal Kota Surabaya yang menjadi salah satu wilayah dengan jumlah angka positif tertinggi di Kecamatan Dukuh Pakis. Tujuan dari penelitian ini adalah untuk mendeskripsikan evaluasi program Kampung Tangguh Wani Jogo Suroboyo di Kelurahan Pradah Kalikendal Kota Surabaya. Jenis penelitian ini adalah penelitian deskriptif dengan pendekatan kualitatif menggunakan kriteria evaluasi oleh Dunn yaitu efektivitas, efisiensi, kecukupan, perataan dan rensponsivitas dengan teknik pengumpulan data yaitu wawancara mendalam, observasi partisipan, dokumentasi serta triangulasi data. Teknik yang digunakan untuk menganalisis data menggunakan model interaktif yang terdiri dari pengumpulan data, kondensasi data, penyajian data dan diakhiri dengan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa program ini telah berjalan sesuai dengan pedoman yang berlaku. Namun terdapat hambatan dalam melaksanakan program yaitu kurang konsistennya satgas RW dalam melaksanakan program meskipun sudah tersusun dengan baik pada struktur organisasi serta kendurnya pengawasan yang menyebabkan kurangnya kesadaran masyarakat dalam merapkan protokol kesehatan. Saran pada pelaksanaan program ini yaitu agar program dapat berjalan secara konsisten maka pihak satgas melakukan koordinasi dan pengarahan kepada satgas di setiap RW untuk selalu melaksanakan pemantauan serta sosialisasi kepada warga agar tetap menerapkan protokol kesehatan, dan tetap melaksanakan program menyeluruh di setiap RW agar setiap masyarakat/kelompok sasaran merasakan manfaat yang sama.

Kata Kunci: Covid-19, Evaluasi, Program Kampung Tangguh Wani Jogo Suroboyo.
Основні аспекти управління людськими ресурсами на регіональному рівні
Authors: Didenko Oleh , Myroshnychenko Alina
Published: December 2023

У статті досліджено питання щодо управління людськими ресурсами на регіональному рівні, зокрема розкрито які моделі існую та яка саме модель управління людськими ресурсами у сфері публічного управління в Україні та її особливості. Проаналізовано залежність термінів «управління людськими ресурсами» та «управління персоналом» чи «менеджмент персоналу», зазначено, що «управління людськими ресурсами» значно ширше поняття. Також відзначено основні функції управління людськими ресурсами в системі регіональних адміністративних установ, а саме: планування, відбір (наймання), соціалізація, професійний і кар’єрний розвиток, оцінка показників ефективності, мотивація, підтримка трудових відносин для максимального використання потенціалу людських ресурсів. Наголошено на важливості управління людськими ресурсами для органів державної влади, зокрема, на регіональному рівні.
Інформаційно-комунікаційні технології в процесах логістичного обслуговування: сутність, особливості та розвиток в умовах розвитку цифрових технологій
Authors: Hgliebova Alla , Vasylchenko Mariana , Ivanov Yurii
Published: December 2023

У статті досліджуються сучасні інформаційно-комунікаційні технології в умовах діджиталізації економіки України, які нині відіграють ключову роль. При цьому важливого значення набувають цифрові рішення, які дозволяють максимально враховувати вимоги зовнішнього середовища (глобалізацію, діджиталізацію, цифровізацію, інтернаціоналізацію). Пандемія COVID-19 стала випробовуванням для логістичних підприємств і каталізатором впровадження цифрових рішень не тільки для вирішення поточних проблем, але і адаптації до нових реалій. Визначено, що на даному етапі підприємства, які займаються розвитком своїх інформаційних систем та впровадженням сучасних цифрових рішень отримують низку конкурентних переваг. Наведено приклад «Нової пошти» - провідного логістичного підприємства, яке активно розвиває логістичні процеси та впроваджує цифрові рішення, щоб утримувати лідируючі позиції на ринку. Встановлено, які переваги отримає логістичне підприємство від удосконалення інформаційно- комунікаційних технологій, а саме: зменшення ризику помилок, підвищення якості надання персоналізованих послуг та рівня задоволеності клієнтів, покращення доставки на останній милі, забезпечення безпеки та гарантоване зниження шахрайства. Досліджено, що процеси діджиталізації, які реалізуються через інформаційно-комунікаційні технології, забезпечують конкурентні переваги, навіть якщо вони є дорого вартісними, і сприяють інтенсивній обробці даних, мінімізації втрат часу, підвищенню продуктивності праці, зменшенню помилок та ризиків втрат. Встановлено, що нині є низка факторів, які можуть суттєво стримувати розвиток логістичних підприємств: недосконале законодавство, недостатність інвестицій, низька якість інфраструктури, недостатня кількість терміналів, логістичних центрів, недостатня кількість та якість транспортних засобів і таке інше.
Influence of environmental factors on the modern enterprise management
Authors: Khrystenko Olena , Oleksiienko Roman
Published: December 2023

The article examines the impact of the external environment on the management of logistics enterprises. Various environmental factors are considered, namely: economic, political, socio-cultural, unforeseen events and risks, as well as situations in the international environment. We have substantiated that the external environment is a key factor that affects the success or failure of an organization. We also provide a number of examples that demonstrate the impact of various factors on enterprises in Poltava region during the war. We have concluded that for an organization to be successful, it is necessary to pay attention to the external environment and develop strategies that take into account the possible impacts of various factors. It was emphasized that it is necessary to be able to adapt to changes that may occur in the external environment and develop strategies that provide a competitive advantage.
Current state of the accounting outsourcing market in Ukraine
Authors: Koba Olena , Koshlyak Darya
Published: December 2023

The transition of companies to remote working as a result of the COVID-19 pandemic has forced them to use outsourcing companies more frequently to perform certain functions, particularly accounting. As a result of this and numerous advantages of outsourcing for the client, the volume of outsourcing services on the world market has increased. In Ukraine, too, outsourcing relations have gained popularity, which is confirmed by the dynamics of the number of business entities in the field of accounting, the volume of services they provide, and their place in the world ranking. However, due to the lack of necessary knowledge, experience in this field, financial difficulties, the share of accounting outsourcing is much lower than the indicators of developed countries of the world. In the conditions of martial law, almost all indicators of business activity of enterprises in Ukraine decrease: the number of orders, employment of personnel, stocks, volume of production or provision of services, but the share of business entities that have completely or partially stopped their activities as a result of the war is gradually decreasing. Ukrainian business, looking for ways out of the crisis, is ready to invest in export activities. However, this is hindered by: low level of foreign language skills; insufficient knowledge, experience and qualified personnel in this field; difficulties in finding orders, partners; insufficient awareness of foreign markets; non-compliance of products/services with international requirements; financial and logistical problems; lack of experience in international sales and marketing, etc. In order to overcome these obstacles, specialists from outsourcing companies who are familiar with the peculiarities of organising export activities are brought in. The cost of their services is lower than the wages of full-time employees, which is a valid argument in times of war. These factors, together with the advantages of accounting outsourcing, contribute to its development in Ukraine under modern conditions. However, in order to reach the level of outsourcing services of the developed countries of the world, it is necessary to implement electronic document flow, domestic accounting information technologies and create a legislative framework for regulating outsourcing relations.
Cost Management and Supply Chain Management: Experiences of Vulnerable SMEs during COVID-19
Authors: Pathak Shubham , Swatdikun Trairong , Hao Yaoxian
Published: December 2023

Small and Medium Enterprises (SMEs) constitute the vital economic fabric of Thailand, catalyzing growth and employment opportunities. However, the advent of disruptive events, exemplified by the COVID-19 pandemic, poses formidable challenges to their sustainable development. Adequate cost management and supply chain management are crucial for these SMEs to sustain themselves through disruptive scenarios. This study aims at exploring, understanding, and analyzing various factors that would impact the reduced vulnerability of SMEs and enhance the sustainability of the Thai economy. The methodology adopted for this research is the qualitative method. The data has been collected through semi-structured interviews and in-depth interviews, and secondary data has been collected through online and printed sources. The data analysis involves content analysis of the themes that are deduced from the extensive literature review. Furthermore, the data has been analyzed with Strength, Weakness, Opportunity, and Threats (SWOT) to analyze the impacts of internal and external factors on the sustainability of the SMEs. The study's findings divulge a spectrum of challenges spanning cost management intricacies, socio-cultural influences, and economic nuances that collectively impede SME progress. The absence of effective governmental policies, regulations, and actual need assessments of society and the economy results in enhanced vulnerabilities for SMEs. Similarly, the risk perceptions of the SMEs were found to be inaccurate, which led to ineffective cost management strategies and supply chain management during the COVID-19 pandemic. These findings cover the existing literature gap. The research paves the way for further micro-level research into the amalgamated impact of cost management and adequate supply chain management, especially during disruptive events such as the COVID-19 pandemic. Doi: 10.28991/ESJ-2023-07-06-018 Full Text: PDF
New Concept of Teaching English to Students from Non-English Speaking Countries
Authors: Rintaningrum Ratna , Kavgić Aleksandar , Garaeva Marina , Shcherbatykh Lyudmila , Kosov Mikhail , Morán Próspero , Saddhono Kundharu , Shalina Olga , Vatutina Larisa , Dudnik Olesya
Published: December 2023

The objective of this study is to compare and underscore the advantages and disadvantages of learning English in non-English speaking countries to propose the concept of a new English teaching method for students from non-English speaking countries (the case of Russia, Spain, Serbia, and Indonesia). The study used a mixed-methods approach with qualitative analysis of literature from Russia, Serbia, Spain, and Indonesia, and a research questionnaire was developed. 1595 participants were recruited for a survey determining their experiences of learning English and students’ perspectives on English teaching methods in non-English speaking countries. The data went through thematic analysis in the qualitative part of the research and descriptive analysis in the quantitative survey-based design. Findings of the qualitative analysis revealed both advantages and disadvantages of teaching English to students in selected countries; however, the main findings reported the presence of cultural barriers and students finding it difficult to form meanings from the English language context. Conceptual thinking helped to understand the role of memory and comprehension when learning a foreign language, whereby research focuses on more novel concepts. Future researchers can focus on the area of neural development of students' memory, which can help guide strategies to teach the English language effectively. Doi: 10.28991/ESJ-2023-07-06-020 Full Text: PDF
Improving Sensitivity of the DEWMA Chart with Exact ARL Solution under the Trend AR(p) Model and Its Applications
Authors: Karoon Kotchaporn , Areepong Yupaporn
Published: December 2023

The double exponentially weighted moving average (DEWMA) chart is a control chart that is a vital analytical tool for keeping track of the quality of a process, and the sensitivity of the control chart to the process is evaluated using the average run length (ARL). Herein, the aim of this study is to derive the explicit formula of the ARL on the DEWMA chart with the autoregressive with trend model and its residual, which is exponential white noise. This study shows that this proposed method was compared to the ARL derived using the numerical integral equation (NIE) approach, and the explicit ARL formula decreased the computing time. By changing exponential parameters that were relevant to evaluating in various circumstances, the sensitivity of AR(p) with the trend model with the DEWMA chart was investigated. These were compared with the EWMA and CUSUM charts in terms of the ARL, standard deviation run length (SDRL), and median run length (MRL). The results indicate that the DEWMA chart has the highest performance, and when it was small, the DEWMA chart had high sensitivity for detecting processes. Digital currencies are utilized to demonstrate the efficacy of the proposed method; the results are consistent with the simulated data. Doi: 10.28991/ESJ-2023-07-06-03 Full Text: PDF
Developing a Linked Open Data Platform for Folktales in the Greater Mekong Subregion
Authors: Ngootip Treepidok , Manorom Paiboon , Chansanam Wirapong , Buranarach Marut
Published: December 2023

This research paper presents the development of a linked open data (LOD) platform that aims to organize and facilitate access to valuable knowledge about folktales and ethnic groups in the Greater Mekong Subregion countries. The study’s methodology involved the creation of a linked open data platform, structuring folktales’ knowledge, and evaluating its performance through expert assessment. The LOD platform was constructed through Google OpenRefine to establish connections with external data sources, and the RDF files (N-Triples) were deployed on Fuseki Server (Apache Jena) to serve as the SPARQL endpoint for querying the linked open data. The Pubby web app was chosen for further development to provide a user-friendly interface, which customized with the Bootstrap framework, featuring an intuitive homepage and a search box function for simplified data retrieval. For the expert evaluation, the study confirmed that the platform performs a high suitability in terms of congruence, reliability, integrity, understandability, collaboration, accessibility, and connectedness. The developed LOD platform exhibits significant potential for expanding its application to various content domains, offering a valuable resource for accessing and exploring the rich cultural heritage of folktales in the Greater Mekong Subregion countries. Doi: 10.28991/ESJ-2023-07-06-06 Full Text: PDF
Digital Transformation Governance at the Organization Using IT Infrastructure Library Framework
Authors: Mulyani Raden H. S. , Gaol Ford Lumban , Matsuo Tokuro
Published: December 2023

Nowadays, most of our daily activities are assisted electronically due to not only time effectiveness but also activity efficiency. Processes that once could only be completed at the office are now able to be done anywhere and anytime, as long as there is internet access. One obvious example is the COVID-19 pandemic which leads to the work-from-home system. Therefore, this spurred the author on to innovation by adapting to the current phenomenon. Most of our daily activities are currently converted to digital, in which these digital users can reap abundant results. This manual-to-digital conversion is known as ‘digital transformation’. The purpose of digitalization in this organization is to transform the disposition distribution of the leaders from manual to digital. The result of the study is the adoption of e-Disposisi application (paperless office) in the organization, which causes the business processes to be more effective and more efficient concerning time, human resources, document storage, and paper use. This implementation results in changes in the business processes, the reduction of time needed to distribute documents, the lower purchase of paper and tint, and the minimized employment of human resources. Generally, the research contributes to the more effortless business processes in the organization, allowing operations to continue without direct contact. Data collection was done through various methods, namely observation, interview, questionnaire, focus group discussion (FGD), and literature. The methodologies used were Soft System Management, qualitative and quantitative referring to the IT Information Library framework. Doi: 10.28991/ESJ-2023-07-06-07 Full Text: PDF
Thinking of deep time
Authors: Aubry Marie-Pierre
Published: December 2023

Geological time is one of the most difficult concepts to comprehend, and its measurement is expressed both in relative and numerical terms. The modern geological time scale constitutes a framework for historical geology, and provides numerical ages in two forms. One is date; the other is duration. Most geoscientists use distinctive abbreviations (commonly 'Ma' and 'Myr') to specify date and duration, but some geochemists do not, using 'Ma' (mega-annus) interchangeably and are pressuring journals to follow suit. In an attempt to determine the usefulness of distinct symbols, the concept of geological time and its different expressions is reviewed, and the method- ology used to determine numerical ages of crucial datum levels in chronostratigraphy is discussed. Despite the important place given to dates, geological time scales are foremost about duration of intervals between dates, from which the age of key datum points are deduced. Durations are quantities, and it may someday be suitable to express them in terms of a non-SI unit. Dates, on the other hand, are merely geological instants, not quantities, and are not concerned with the SI.
The Jurassic-Cretaceous boundary: new data from North America and the Caribbean
Authors: Pessagno Emile A. , Cantu-Chapa Abelardo , Mattinson James M. , Meng Xiangying , Kariminia Seyed Mohsen
Published: December 2023

The Jurassic-Cretaceous boundary is the most problematic of all Phanerozoic system boundaries. Its defini- tion is obscured by almost imperceptible faunal and floral change, nomenclatural problems resulting from the poor defini- tion of its bounding stages, the over reliance of calpionellids for correlation, and the provinciality of ammonite zones in the European type area. The unfortunate decision of ammonite stratigraphers to use Calpionella Zone B to mark the base of the Berriasian set back the resolution of the Jurassic-Cretaceous boundary problem by thirty-five years in Europe, North America, and elsewhere. In this report a more detailed radiolarian zonation for the Upper Jurassic is introduced. The ra- diolarian biostratigraphy has been integrated with that of the North American ammonite, Buchia, calcareous nannofossils, and calpionellids as well as with new and existing U-Pb geochronometry. Investigations focused on uppermost Jurassic to lowermost Cretaceous successions in central Mexico, Baja California, California, and the West Indies have recognized four new subzones in both radiolarian Zones 2 and 4. Pillow basalt at La Desirade dated at 143.734ma ± 0.060ma [0.042%] (U-Pb zircon age on coeval plagiogranite) is intercalated with red ribbon chert containing an upper Subzone 4 beta2 radiolarian as- semblage with corporeal taxon Neovallupus spp. This horizon likewise occurs in Mexico, where it can be directly related to ammonite-bearing strata occurring slightly below the boundary between Imlay's Kossmatia-Durangites and Substeuero- ceras-Proniceras assemblages, and can be recognized in Argentina and Antarctica as well. The composite data from the North American record indicate that the European calpionellid biozones are diachronous between Europe and the Western Hemisphere. The boundary between Zone 4, Subzone 4 alpha, and Zone 5, Subzone 5A, which corresponds to the tradi- tional Jurassic-Cretaceous boundary, is well represented at Grindstone Creek in the California Coast Ranges in the upper part of the Buchia sp. aff. B. okensis Zone. In view of our findings, however, it also may be desirable to consider two other alternatives for the placing the Jurassic-Cretaceous boundary: one at the base of new Radiolarian Subzone 4 alpha, and the ammonite Substeuerocas-Proniceras assemblage, and the other at the base of the Valanginian. The traditional boundary horizon as well as the two alternatives can all be related to new and existing U-Pb geochronometric data. Nomenclatural problems surrounding formational units in the Mexican Upper Jurassic have been addressed. Four new members for the La Caja Formation; two new members for the Taman Formation; and one new formational unit, the Santa Rosa Formation have been introduced.
New quantitative evidence of extreme warmth in the Pliocene Arctic
Authors: Robinson Marci M.
Published: December 2023

The most recent geologic interval characterized by warm temperatures similar to those projected for the end of this century occurred about 3.3 to 3.0 Ma, during the mid-Piacenzian Age of the Pliocene Epoch. Climate reconstructions of this warm period are integral to both understanding past warm climate equilibria and to predicting responses to today’s transient climate. The Arctic Ocean is of particular interest because in this region climate proxies are rare, and climate models struggle to predict climate sensitivity and the response of sea ice. In order to provide the first quantitative climate data from this region during this interval, sea surface temperatures (SST) were estimated from Ocean Drilling Program Sites 907 and 909 in the Nordic Seas and from Site 911 in the Arctic Ocean based on Mg/Ca of Neogloboquadrina pachyderma (sin) and alkenone unsaturation indices. Evidence of much warmer than modern conditions in the Arctic Ocean during the mid-Piacenzian with temperatures as high as 18°C is presented. In addition, SST anomalies (mid-Piacenzian minus modern) increase with latitude across the North Atlantic and into the Arctic, extending and confirming a reduced mid-Piacenzian pole-to-equator temperature gradient. The agreement between proxies and with previously documented qualitative assessments of intense warming in this region corroborate a poleward transport of heat and an at least seasonally ice-free Arctic, conditions that may serve as a possible analog to future climate if the current rate of Arctic sea-ice reduction continues.
Jurassic radiolarite pulses from the Dorsale Calcaire (internal Rif, Morocco): A clue for correlating and interpreting the Tethyan radiolarites
Authors: El Kadiri Khalil , Horstemeyer M. F. , El Kadiri H. , Pessagno, Jr. E. A.
Published: December 2023

The Jurassic radiolarian-bearing sequences from the Rifian Dorsale Calcaire are both lithostratigraphically and biostratigraphically significant. Their stratigraphic base proved to be diachronous and allows them to be divided into seven main litho- and biofacies intervals, herein referred to as “radiolarite pulses” (RP. 1-7). Each RP can be defined as corresponding to the first radiolarite deposition onto pelagic carbonate strata and/or paleokarst surfaces. At the regional scale, the well-marked radiolarite diachronism between the external Dorsale and the internal Dorsale units is explained herein by the fact that the only late Jurassic pulses (or even the sole seventh pulse) reached the Internal Dorsale area. In the case these pulses stack in a single stratigraphic sequence, they exhibit contrasting color and lithofacies and are generally separated by erosional surfaces, chaotic breccias and/or synsedimentary normal faults. Taxonomic analyses reveal that most of the first species occurrences coincide with the stratigraphic base of each radiolarite pulse. Thus, the main taxonomic turnovers and mass extinctions could have occurred penecontemporaneously with the stratigraphical gap that separate two given RPs. On the whole, the lithological and tectonic signatures and the biostratigraphic record allow the triggering mechanisms of these radiolarite pulses to be primarily assigned to tectonic-mediated paleoenvironmental and/or eustatic changes, and to roughly correlate a radiolarite pulse with a third-order tectono-eustatic sequence. These mechanisms also provide a correlation tool that can be applied to the rest of the Tethyan and Pacific Jurassic radiolarites.
Integrated stratigraphy of the Middle to Late Pliocene upper Miyazaki Group, southern Kyushu, Southwest Japan
Authors: Morimoto Jumpei , Oda Motoyoshi , Torii Masayuki , Chiyonobu Shun , Shibuya Hidetoshi , Domitsu Hanako
Published: December 2023

Neogene sedimentary deposits are present in the Miyazaki region, southern Kyushu, on the Pacific side of southwestern Japan. The upper part of the Miyazaki Group, exposed in the Tsuma–Takanabe region of northern Miyazaki, is divided into the Tsuma, Sadowara, and Takanabe formations, in ascending order, and contains a planktic foraminiferal and calcareous nannofossil record of Pliocene events of the mid-latitude northwestern Pacific. The geological age of these units is based on magneto- and biostratigraphy. Five calcareous nannofossil datum horizons are recognized: the last occurrence (LO) of Reticulofenestra pseudoumbilicus, the termination of acme zone II of Reticulofenestra minutula var. C, the LO of R. minutula var. B, calcareous nannofossil datum plane A, and the termination of acme zone I of R. minutula var. C. Six planktic foraminiferal bioevents are also recognized: a coiling direction change, from sinistral to dextral, in the genus Pulleniatina; the first occurrence (FO) of Globorotalia crassaformis; the LOs of Globorotalia margaritae, Sphaeroidinellopsis seminulina, and Dentoglobigerina altispira; and the FO of Neogloboquadrina asanoi. The presence of two calcareous nannofossil bioevents, Datum A and the termination of acme zone I of R. minitula var. C, suggests that the normal and reversed polarity intervals of the upper part of the Takanabe Formation correspond to Chron C2An.1n (latest Gauss Normal Epoch) and Chron C2r.2r (earliest Matuyama Reversed Epoch), respectively. Based on combined floral and faunal data and magnetostratigraphic chron boundaries from the ATNTS2004, the upper part of the Miyazaki Group is Middle to Late Pliocene in age.
Sensitivity of the Greenland Ice Sheet to Pliocene sea surface temperatures
Authors: Hill Daniel J. , Dolan Aisling M. , Haywood Alan M. , Hunter Stephen J. , Stoll Danielle K.
Published: December 2023

The history of the GrIS (Greenland Ice Sheet), particularly in warm climates of the pre-Quaternary, is poorly known. IRD (ice-rafted debris) records suggest that the ice sheet has existed, at least transiently, since the Miocene and potentially since as long ago as the Eocene. As melting of the GrIS is a key uncertainty in future predictions of climate and sea-level, understanding its behaviour and role within the climate system during past warm periods could provide important constraints. The Pliocene has been identified as a key period for understanding warmer than modern climates. Detailed micropalaeontological analyses of the mid-Piacenzian Warm Period (3.264 -3.025 Ma) have produced a series of SST (sea-surface temperature) reconstructions (PRISM2-AVE, PRISM2-MAX, PRISM2-MIN and PRISM3). Use of these different SSTs within the Hadley Centre GCM (General Circulation Model) and BASISM (British Antarctic Survey Ice Sheet Model), consistently show large reductions of Pliocene Greenland ice volumes compared to modern. The changes in cli-mate introduced by the use of different SST reconstructions do change the predicted ice volumes, mainly through precipitation feedbacks. However, the models show a relatively low sensitivity of modelled Greenland ice volumes to different mid-Piacenzian SST reconstructions, with the largest SST induced changes being 20% of Pliocene ice volume or less than a metre of sea-level rise.
The PRISM3D paleoenvironmental reconstruction
Authors: Dowsett Harry J. , Robinson Marci M. , Haywood Alan M. , Salzmann Ulrich , Hill Daniel , Sohl Linda , Chandler Mark , Williams Mark , Foley Kevin , Stoll Danielle K.
Published: December 2023

The Pliocene Research, Interpretation and Synoptic Mapping (PRISM) paleoenvironmental reconstruction is an internally consistent and comprehensive global synthesis of a past interval of relatively warm and stable climate. It is regularly used in model studies that aim to better understand Pliocene climate, to improve model performance in future climate scenarios, and to distinguish model-dependent climate effects. The PRISM reconstruction is constantly evolving in order to incorporate additional geographic sites and environmental parameters, and is continuously refined by independent research findings. The new PRISM three dimensional (3D) reconstruction differs from previous PRISM reconstructions in that it includes a subsurface ocean temperature reconstruction, integrates geochemical sea surface temperature proxies to supplement the faunal-based temperature estimates, and uses numerical models for the first time to augment fossil data. Here we describe the components of PRISM3D and describe new findings specific to the new reconstruction. Highlights of the new PRISM3D reconstruction include removal of Hudson Bay and the Great Lakes and creation of open waterways in locations where the current bedrock elevation is less than 25m above modern sea level, due to the removal of the West Antarctic Ice Sheet and the reduction of the East Antarctic Ice Sheet. The mid-Piacenzian oceans were characterized by a reduced east-west temperature gradient in the equatorial Pacific, but PRISM3D data do not imply permanent El Niño conditions. The reduced equator-to-pole temperature gradient that characterized previous PRISM reconstructions is supported by significant displacement of vegetation belts toward the poles, is extended into the Arctic Ocean, and is confirmed by multiple proxies in PRISM3D. Arctic warmth coupled with increased dryness suggests the formation of warm and salty paleo North Atlantic Deep Water (NADW) and a more vigorous thermohaline circulation system that may have provided the enhanced ocean heat transport necessary to move warm surface water to the Arctic. New deep ocean temperature data also suggests greater warmth and further southward penetration of paleo NADW.
Low-latitude northern hemisphere oceanographic andclimatic responses to early shoaling of the Central American Seaway
Authors: Lutz Brendan P.
Published: December 2023

The opening and closing of ocean gateways has played a major role in shaping global climate by altering oceanic and atmospheric circulation. This study uses planktonic foraminifer assemblage-based sea surface temperature (SST) estimates (Modern Analog Technique) to examine the eastern tropical Pacific (ETP) and subtropical Northwest Atlantic (NWA) during the early stages of shoaling of the Central American Seaway (CAS). In the subtropical NWA (DSDP 103 and ODP 1006), the 5.2 to 5.1 Ma interval is characterized by an increase in SST and sea surface salinity, indicating a strengthening of the Florida Current (FC) and Gulf Stream (GS). Sea surface temperature in the ETP Warm Pool (DSDP Site 84) remained relatively stable between 6.9 and 5.1 Ma, during which El Niño-like conditions persisted. A slight cooling is observed after this interval (with synchronous warming in the NWA), followed by the onset of major cooling at ∼3.2 Ma, both of which are preceded by a shallowing of the thermocline. Stepwise cooling is attributed to enhanced Atlantic meridional overturn cicrulation (AMOC), which caused a shoaling of the main tropical thermocline, thereby strengthening the Walker Circulation and weakening the Pacific North Equatorial Counter Current. Antithetical changes in surface current strength in the NWA and ETP suggest a southward migration of the Intertropical Convergence Zone ∼4.3 Ma. During the mid-Pliocene, SST in the Panama Basin was ∼0.8°C cooler than today, while the subtropical NWA was only ∼1.1°C warmer. This corroborates evidence for reduced meridional SST gradients during the mid-Pliocene as well as the hypothesis that more vigorous ocean circulation-particularly in the NWA-was critical during this period. The timing of SST changes in the ETP and NWA (∼5.1 Ma) suggest that the termination of permanent El Niño and enhanced AMOC did not contribute significantly to the onset of major Northern Hemisphere glaciation (NHG), as both of these events occur well before the beginning of the glacial cycles. However, these processes may have contributed to the development of the small ice sheets of the late Miocene and early Pliocene, but were most likely only preconditioning factors for the onset of major NHG. However, changes in SST and relative thermocline position suggest that high-latitude processes and global cooling may have influenced thermal structure in the ETP. The SST estimates provided indicate that even in its early stages, the shoaling of the CAS had significant implications for low-latitude ocean circulation and thermal structure, as well as for some of the most significant global climate events of the late Neogene.
Mid-Piacenzian mean annual sea surface temperature: an analysis for data-model comparisons
Authors: Dowsett Harry J. , Robinson Marci M. , Stoll Danielle K. , Foley Kevin M.
Published: December 2023

Numerical models of the global climate system are the primary tools used to understand and project climate disruptions in the form of future global warming. The Pliocene has been identified as the closest, albeit imperfect, analog to climate conditions expected for the end of this century, making an independent data set of Pliocene conditions necessary for ground truthing model results. Because most climate model output is produced in the form ofmean annual conditions, we present a derivative of the USGS PRISM3 Global Climate Reconstruction which integrates multiple proxies of sea surface temperature (SST) into single surface temperature anomalies. We analyze temperature estimates from faunal and floral assemblage data,Mg/Ca values and alkenone unsaturation indices to arrive at a single mean annual SST anomaly (Pliocene minus modern) best describing each PRISM site, understanding that multiple proxies should not necessarily show concordance. The power of the multiple proxy approach lies within its diversity, as no two proxies measure the same environmental variable. This data set can be used to verify climate model output, to serve as a starting point for model inter-comparisons, and for quantifying uncertainty in Pliocene model prediction in perturbed physics ensembles.
Early Pliocene Weddell Sea seasonality determined from bryozoans
Authors: Clark Nicola , Williams Mark , Okamura Beth , Smellie John , Nelson Anna , Knowles Tanya , Taylor Paul , Leng Melanie , Zalasiewicz Jan , Haywood Alan
Published: December 2023

Early Pliocene cheilostome bryozoans are preserved in a glacigenic diamictite at Cascade Cliffs, James Ross Island, northern Antarctic Peninsula. Several different marine bryozoan genera were incorporated into the diamictite during Pliocene ice advance(s). Bryozoan zooid-size Mean Annual Range of Temperature (zs-MART) analysis provides estimates of seasonality which suggest that mean annual marine temperatures for the James Ross Island region varied by at least 4.3°C and possibly by as much as 10.3°C during the Early Pliocene. This represents much greater seasonality for the northern Weddell Sea than seen at the present day (MART ca. 2°C). A cluster of zs-MART values between 6.6°C and 7.7°C from four colonies of the bryozoan Dakariella are considered to represent themost reliable range of seasonality estimates. Although we cannot determine absolute sea temperatures, increased seasonality signals an overall warmer climate for the Weddell Sea region at the time that the bryozoans were living.
Mid-Latitude calcareous nannofossil biostratigraphy and biochronology across the middle to late Eocene transition
Authors: Forniaciari Eliana , Agnini Claudia , Catanzariti Rita , Rio Domenico , Bolla Eleonora M. , Valvasoni Elisabetta
Published: December 2023

Calcareous nannofossil biostratigraphic studies are presented from 11 sedimentary sections, nine located in the Mediterranean area and one each from the middle latitude North and South Atlantic, respectively. The distribution patterns of middle to late Eocene calcareous nannofossils are studied by means of quantitative and semiquantitative methods. Our main goal was to test the biostratigraphic reproducibility of bioevents used in two classical standard biozonations, and to introduce new biostratigraphically useful biohorizons, resulting in a series of new middle latitude biostratigraphic events. The new zonal scheme substantially improves the available biochronologic resolution, doubling the current partioning based on the classical standard zonations. This study extends the terminal Eocene and Oligocene calcareous nannofossil zonal scheme proposed for the Mediterranean area (Catanzariti et al. 1997), into the middle Eocene. New age estimates are provided, which highlight the need to revise the present middle-late Eocene calcareous nannofossil biochronology. Two new species are described: Cribrocentrum erbae sp. nov. and Cribrocentrum isabellae sp. nov.
Holocene to Recent Ostracoda of Lake Sevan, Armenia: biodiversity and ecological controls
Authors: Wilkinson Ian P. , Gulakyan Serozh Z.
Published: December 2023

The morphology and dynamics of Lake Sevan, Armenia, have abruptly changed on several occasions during the Holocene. Arguably the most significant events took place about 4000 years BP, when a phase of aridity greatly reduced the size of the lake and about 2100BP when the combined effect of an episode of volcanic activity that dammed the single outlet to the basin and the initiation of a wetter climatic phase, culminated in the development of the modern lake. Archaeological evidence indicates the extent of the first event, while the development of aquatic communities and increase in diversity of, for example, ostracods, characterises the second. Recent environmental stress, caused by a significant drop in water level due to human activity has resulted in changes in the ecosystem and food chain, resulting in a decline in ostracod diversity compared to both the earlier Holocene and sub-Recent. The living fauna is characterised by abundant Candona neglecta and Cyprideis torosa, common sexually reproducing Limnocythere inopinata, and less common Fabaeformiscandona caucasica, Candona candida, Cyclocypris ovum, Cypria ophthalmica and Darwinula stevensoni.
85 ÉVES AZ ANGOL SZAKOS KÉPZÉS A DEBRECENI EGYETEMEN: IGAZGATÓI KEREKASZTAL-BESZÉLGETÉS
Authors: Venkovits Balázs
Published: December 2023

In 2023 the University of Debrecen's Institute of English and American Studies celebrates the 85th anniversary of the founding of the Department of English and thus the launching of an English studies degree program at the University of Debrecen. The history of the institute and the careers and achievements of its prominent figures have been the subject of a dedicated volume and a number of studies. The aim of the present roundtable is to explore, with the involvement of some of the former directors of the Institute, the less known aspects of its past that are of relevance for the history of the university as well, nuanced by personal recollections, linking the past with the present and the future. The discussion was initiated and moderated by Balázs Venkovits, the current director of the Institute, and involved four former directors, Zoltán Abádi Nagy, István Rácz, Péter Szaffkó and Zsolt Virágos.
MEGEMLÉKEZÉS A NEMZETKÖZI EGYETEMTÖRTÉNETI BIZOTTSÁG VOLT ELNÖKÉRŐL, HILDE DE RIDDER-SYMOENS-RŐL
Authors: Szögi László
Published: December 2023

Hilde De Ridder-Symoens, internatonally appretiated professor of Medieval History passed away 5th March 2023 at the age of 80. The Belgian professor was one of the most excellent university historian of her age.
Correlation of Destructive and Non-Destructive Tests with Electrical Resistance in Cementless Composites
Authors: YURT Ümit , KIR Barış , BİCEN Yunus
Published: December 2023

In the construction industry, tests such as compressive strength, density porosity, and water absorption porosity are frequently used to determine material properties. In general, experimental studies are divided into two categories: destructive and non-destructive testing methods. According to the common consensus, destructive testing methods produce more dependable results than non-destructive testing methods. However, it is not possible to reuse the samples in destructive tests, and there are difficulties in taking samples from the building whose construction process has been completed. In addition, the experimental implementation of destructive tests creates time and cost disadvantages. Within the scope of this study, destructive and non-destructive experiments have been carried out on alkali-activated concrete composites, which have attracted interest as sustainable environmentally friendly composite building materials in recent years. Compressive strength, density, porosity, water absorption, etc. traditional test methods have been associated with electrical resistance measurements. Electrical measurements have been taken with the MEGGER equipment, and resistance values have been directly correlated with the other parameters. The positive results indicate that different structures of materials used in the construction industry can be evaluated regardless of sample size or localization.