bluuebunny/crossref_metadata_2025 huggingface dataset:
Backtesting Brilliance: Leveraging Analytics for Comparing Buy & Hold Vs. Trading Strategies based on Technical Indicators
Authors: Anjali Bhute
Published: November 2024

Purpose
This study performs backtesting of the technical trading strategies on MAANG stocks using the analytics platform. In addition, specific ML models are used on Sensex prices to understand whether stock movements are well explained by the trading signals. The ability to forecast stock market movements has the potential to attract investors to invest in the financial rewards attached to them.
Methodology
We have used the quantmod and PerformanceAnalytics packages of R to test the trading strategies of technical indicators. The stock prediction model is tested using TA-Lib which is again an open-source library in Python.
Findings
We have found the backtesting results of trading strategies consisting of technical indicators and compared them with the risk-return tradeoff of the buy-hold strategy. In addition, the ML models for stock price predictions provided some interesting results.
Practical implications
This study contributes to the literature on the application of analytics to trading strategies. The past performance of stocks based on these strategies is beneficial for traders and investors to investigate different strategies and technical signals.
Originality and Future Scope
The combination of indicators used in the study to backtest and model building was novel and unique compared to most similar studies. For further improvement, this study can be extended to include more technical indicators and stocks to build a robust prediction model for stock prices.
El proyecto de vida de Pedro Briceño: el rescate de papas nativas
Authors: Dabat Partiot Marie-Hélène , Rodríguez Borray Gonzalo Alfredo
Published: November 2024

The homogenization of food patterns has affected potato production, causing it to concentrate on a few varieties and leading to the disappearance of other potatoes of great cultural, biological, and nutritional value. Aware of this loss of biodiversity for food security and sovereignty, it is interesting to learn about the experience of Mr. Pedro Briceño, a farmer and micro-entrepreneur from Boyacá, a pioneer in rescuing and producing native potatoes. This paper presents excerpts from an interview with Pedro, a potato and vegetable farmer in the municipality of Ventaquemada (Boyacá, Colombia), who has managed to position different native Andean species in restaurants and markets in Bogotá. The interview further explores his experience and provides recommendations for collective work between agricultural research entities (such as AGROSAVIA and CIRAD) and peasant producer companies to rescue these species.
Innovación agroalimentaria: la ciencia y la tecnología frente al cambio climático y la seguridad alimentaria de los territorios
Authors: Mideros Bastidas María Fernanda , Dabat Partiot Marie-Hélène
Published: November 2024

This thematic issue aims to offer the public a selection of research articles, debates, commentaries, technical notes, and interviews that deal with advances in agrifood innovation developed in the face of climate change and food security in territories throughout Colombia. This issue will mainly focus on compiling studies that allow an understanding of how technological bets based on science, technology, and innovation have contributed to developing experiences with local communities. The contents will highlight those scientific advances that have generated changes and impacts favoring the connection with nature and knowledge on biodiversity and that, in turn, contribute to mitigating the effects of climate change and strengthening food security and sovereignty
İHA Fotogrametrisi Kullanarak Tarihi Alanların Üç Boyutlu Belgelenmesi: Soli Pompeiopolis Antik Kenti Örneği
Authors: Karakaya Elif Haksun , Ulvi Ali
Published: November 2024

Bu çalışma, Mersin’in Soli Pompeiopolis antik kentinde yer alan tarihi sütunlu caddenin üç boyutlu (3B) modellemesini gerçekleştirerek, kültürel miras alanlarının dijital belgelenmesinde İHA fotogrametrisi ve dijital modelleme tekniklerinin etkinliğini incelemektedir. İnsansız Hava Araçları (İHA) kullanılarak gerçekleştirilen fotogrametrik modelleme ile yüksek hassasiyette bindirmeli fotoğraflar toplanmış; Agisoft Metashape yazılımında nokta bulutu ve yüzey dokusu oluşturulmuştur. Ardından SketchUp yazılımında sütunların detaylı vektörel modelleri elde edilmiştir. Çalışma sonucunda, sütunlu caddenin mimari detaylarının yüksek doğrulukta dijital kayıt altına alındığı ve bu modellerin restorasyon, koruma ve akademik araştırmalar için stratejik bir kaynak sunduğu görülmüştür. Dijital kayıtların kültürel mirasın korunması, erişilebilirliğinin artırılması ve sürdürülebilir yönetimi açısından önemli katkılar sunduğu tespit edilmiştir. Bu yöntemlerin, dünya genelinde kültürel miras alanlarının korunmasında yaygın olarak kullanılabileceği önerilmektedir.
जलवायू परिवर्तन र जलवायू उत्थानशिल कृषि सम्बन्धी सुचना पत्र भेरीगंगा नगर पालिका, कर्णाली प्रदेश
Authors:   International Centre for Integrated Mountain Development (ICIMOD), JHA Anil
Published: November 2024

Information Sheet on Climate Change and Climate Resilient Agriculture in Bheriganga Municipality, Karnali. This information sheet, developed under the GRAPE project, provides an overview of climate change vulnerabilities in the municipality and their impact on agriculture. Additionally, it outlines strategies for mitigating these impacts through climate-resilient agricultural practices.
जलवायू परिवर्तन र जलवायू उत्थानशिल कृषि सम्बन्धी सुचना पत्र हिमाली गाउँपालिका, सुदुरपश्चिम प्रदेश
Authors:   International Centre for Integrated Mountain Development (ICIMOD), JHA Anil
Published: November 2024

Information Sheet on Climate Change and Climate Resilient Agriculture in Himali Rural Municipality, Sudurpashchim. This information sheet, developed under the GRAPE project, provides an overview of climate change vulnerabilities in the municipality and their impact on agriculture. Additionally, it outlines strategies for mitigating these impacts through climate-resilient agricultural practices.
जलवायू परिवर्तन र जलवायू उत्थानशिल कृषि सम्बन्धी सुचना पत्र स्वामीकार्तिक खापर गाउँपालिका, सुदुरपश्चिम प्रदेश
Authors:   International Centre for Integrated Mountain Development (ICIMOD), JHA Anil
Published: November 2024

Information Sheet on Climate Change and Climate Resilient Agriculture in Swamikartik Khaper Rural Municipality, Sudurpashchim. This information sheet, developed under the GRAPE project, provides an overview of climate change vulnerabilities in the municipality and their impact on agriculture. Additionally, it outlines strategies for mitigating these impacts through climate-resilient agricultural practices.
建構國軍廢彈委商處理廠商評選指標之研究
Authors: 陳均義 陳均義 , 藍碧玲 藍碧玲
Published: November 2024

廢舊彈藥影響彈藥庫儲管理安全，需藉由廢彈處理紓解國軍廢舊彈藥儲存壓力，提升庫儲作業安全。而廢彈處理屬高風險專業作業，處理廠商遴選係委外合約採購能否順利履約之重要課題，因此，探討廢彈委商處理廠商評選要項，為值得審慎思考的議題。

本研究透過文獻探討及專家訪談建構出廢彈委商處理廠商評選要項，計「履約資格」等四項評選準則及「組織架構」等十一項評選指標，並運用層級分析程序方法，完整建立廠商評選層級架構。

研究顯示廢彈委商處理廠商評選要項上，對各準則的重要性程度考量排序為：履約能力（0.395）、品管機制（0.298）、廠商資格（0.86）、公司服務」0.121）。其中技術能量為廠商評選之最重要項目，其次為安全衛生；故後續針對廢彈處理廠商評選要項擬定，應建立完善評選架構，以遴選出最佳履約廠商，有效消弭廢彈危害。

 
Charting the future of Brazil’s electricity: a multicriteria analysis of northeastern power strategies amidst climate challenge
Authors: Souza Júnior Clécio Barbosa , Köppel Johann , Sobral Maria do Carmo
Published: November 2024

The article addresses the challenges faced by regions under water stress, such as conflicts over water use, environmental degradation, and water resource scarcity, intensified by climate change. In areas dependent on hydropower generation, these problems are exacerbated, highlighting the need to transition to more sustainable and resilient energy sources. The study emphasizes the importance of multifaceted criteria for an effective transition of the electricity matrix in semi-arid regions, taking into account economic, technical, environmental, and social aspects. Focusing on the São Francisco River basin in Northeastern Brazil, where the energy matrix is predominantly hydroelectric, the study uses the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) to evaluate alternative scenarios, analyzing options for wind, solar, and thermoelectric energy. The methodology adopted included the close collaboration of experts in defining and weighting essential criteria, covering economic, technical, environmental, and social aspects. The results show that, within the same group, options that involve greater reductions in hydroelectric generation are more advantageous. Analyzing the ranking among all alternatives, the group that includes higher expansion of wind energy presents the most viable options, followed by the reference strategy (based on average annual generation) and the group with greater expansion of solar capacity. Increasing the share of gas-fired thermoelectric power is considered a less favorable solution according to the criteria used in the model.
Remote sensing applied to biophysical parameters and land cover to identify urban heat islands in Recife (PE), Brazil
Authors: Leonardo Haylla Rebeka de Albuquerque Lins , Almeida Débora Natália Oliveira de , Amorim Alessandro Rodrigues de , Paiva Anderson Luiz Ribeiro de , Oliveira Leidjane Maria Maciel de , Santos Sylvana Melo dos
Published: November 2024

Urban growth results in several changes, mainly related to demographic, social, economic, and environmental aspects, leading to a new connotation in the use and occupation of land. This new scenario impacts the local energy balance, creating what is called an “urban heat island”. This study aims to investigate the occurrence of urban heat islands in Recife city, the capital of Pernambuco, Brazil, based on the processing of biophysical parameters, the classification of land use and occupation, and surface temperature. The orbital images of the study region were obtained and processed using the Google Earth Engine cloud processing platform from 2013 to 2021. The results showed an increase in areas with greater urban density and a reduction in areas with vegetation. It was realized that in regions with greater urban density, the surface temperature observed was up to 5.20°C higher than in the area with vegetation.
Potential of two floating aquatic macrophytes in improving water quality: A case study in two tropical streams
Authors: Alexandre David Silva , Ogura Allan Pretti , Mohedano Rodrigo de Almeida , Thibau Lorena Bittencourt Guimarães
Published: November 2024

The expansion of urbanization has led to significant adverse environmental effects, including the disposal of domestic sewage without treatment in water bodies. This impact contributes to the deterioration of water quality and poses serious risks to human health and the environment. In this context, effective and sustainable methods to mitigate the impacts should be explored, such as the use of plants capable of removing or degrading contaminants from water. The present study aimed to assess the phytoremediation potential of two free-floating aquatic macrophytes (Eichhornia crassipes and Pistia stratiotes) systems for enhancing the water quality collected from two polluted urban streams. The trials were performed in 25-L experimental units for seven days under ambient conditions. The water quality variables after the exposure period were compared to those at the beginning of the experiment to assess the potential improvements due to the presence of macrophytes. The systems with E. crassipes exhibited good performance in water samples from both streams, with reductions reaching 29.2% in dissolved solids, 36.8% in electrical conductivity, 44% in biochemical oxygen demand, 57% in nitrogen, and 45% in phosphorus. The systems with P. stratiotes also exhibited satisfactory outcomes, including 90 and 76.2% reductions in phosphorus levels of Santa Rita Stream and Galinha Stream, respectively, and 54% turbidity, and 38% biochemical oxygen demand in both streams. These findings highlight the potential of the two plant species for phytoremediation of polluted waters, considering their performance on short-term exposure. Therefore, this approach consists of a sustainable alternative by utilizing natural elements for environmental restoration, and the outcomes can contribute to future applications of phytoremediation techniques in developing countries.
Needs Analysis for ESP Courses in the Context of a Private University of Bangladesh
Authors: Munira Dr. Serajum , Afreen Sumaiya , Akter Aklima , Masum Helal Abdulla- Al- , Nessa Meherun
Published: November 2024

This study thoroughly analyses the requirements of English as a Second Language (ESL) courses offered at Green University of Bangladesh with a focus on the specific linguistic demands of students who are majoring in Engineering, Business, and Computer Science. One hundred students and five instructors participated in the research, which employed a mixed-methods approach to analyse both quantitative and qualitative data collected using questionnaires, focus group discussion, interviews, and diagnostic tests. When comparing student needs with what is taught in ESP programs, the findings reveal a significant gap, particularly in the areas of academic writing, oral communication, and technical terminologies. Students, especially those having backgrounds in Computer Science and Engineering (CSE) and Electrical and Electronics Engineering (EEE), voiced concerns about the difficulty of technical language and public speaking, while teachers emphasized on the importance of expanding students' specialist vocabulary and providing more hands-on communication activities. Despite the importance of industry standards and real-world applications as per students' academic and professional performance, the research states that the current ESP curriculum falls short in meeting these demands. More hands-on activities and specialist content, together with better preparation for educators to lead specialized language courses, are two ways that the curriculum may be improved to better suit these needs. The paper highlights the need of tailoring ESP courses as per the needs of students in different disciplines and suggests curriculum modifications to prepare students for the global job market.
A Phenomenological Research on Examining Middle School Teachers' Digital Competency Self-Efficacy Perceptions
Authors: Canoğulları Emre , Sarı Mediha
Published: November 2024

The primary purpose of the research is to examine middle school teachers' self-efficacy perceptions of digital competence. The participants of this study, which was conducted using the phenomenology pattern of the qualitative research approach, consisted of 17 middle school teachers who were determined using the criterion sampling method, one of the purposive sampling methods. The data were collected using a semi-structured interview form developed by the researchers and analyzed by content analysis. As a result of the research, it was determined that teachers mostly tried to define the concept of digital competence as having technology and software knowledge. It has been observed that teachers' self-efficacy perceptions of digital competence are generally at a moderate level. Middle school teachers mainly stated the factors contributing to self-efficacy as being able to do daily and professional life in a digital environment and using digital devices, software, and the internet. In contrast, they stated that the factors that lead to poor self-efficacy perceptions are the inability to use digital devices and software comprehensively and to prepare content.
Experiences of In-service EFL Teachers for the Modes of Instruction Regarding Comparative Perceived TPACKs
Authors: Arpacı Gökhan , Su Bergil Ayfer
Published: November 2024

The settings of education have undergone several alterations in such a way that the modes of instruction are one of the obvious results of this change. Therefore, it was inevitable that TPACK would resurface, and EFL teachers had to carefully examine and record the levels of TPACK considering the modifications that occurred prior to, during, and following their exposure to various modalities of instruction. Thus, this study aimed to explore the perceived TPACKs for the modes of instruction of 185 in-service EFL teachers in Türkiye during and after the pandemic and shed light on the literature by comparing the two different modes of instruction (i.e., face-to-face, and online) they experienced via the quantitative findings. During the COVID-19 restrictions, a survey was conducted in such a way that participants could answer every single item twice: once in their face-to-face mode and once in their online mode associated with their perceived TPACKs. Overall, findings revealed that the in-service EFL teachers had a lower perceived TPACK for online mode compared to face-to-face education. The manifested results had significant national and international implications for the future of the EFL.
Entre plantas y almas: La herbolaria en la vida de las mujeres de Suchitlán, Colima
Authors: Torres Covarrubias José Alejandro , Ceballos Gómez Camila Sofía
Published: November 2024

Entre plantas y almas representa la lucha y resistencia histórica de Suchitlán, Colima, por preservar sus saberes ancestrales. Este libro se conforma a través de historias de vida que danzan entre plantas y tierra húmeda. Los relatos aquí reunidos son el resultado de entrevistas, pláticas, relatos y tesoros vivenciales guardados en el corazón de las mujeres que lo integran. Estos elementos socioculturales fueron recopilados, analizados y tratados desde una mirada horizontal y comunitaria, con un enfoque de investigación-acción participativa. La herbolaria se vincula con la familia, la historia, el orgullo comunitario, la lucha, la resistencia y la supervivencia, aspectos que hacen de este libro un espacio para la preservación y difusión de los saberes herbolarios y su influencia en la vida de las mujeres de la comunidad de Suchitlán.
Pengaruh Arus Kas Terhadap Likuiditas Pada Perusahaan Umum Daerah Air Minum Gapura Tirta Rahayu Purwakarta
Authors: Fitriani Dini , Yulianti Yulianti
Published: November 2024

This study aims to analyze the effect of cash flow on liquidity at the Regional Public Drinking Water Company Gapura Tirta Rahayu Purwakarta Regency. This study uses quantitative methods and has two variables consisting of cash flow and liquidity. The data source in this study was obtained from documentation data in the form of financial reports obtained from the company. The population of this study is the audited annual financial statements from 2015-2022. The research sample used is the cash flow statement and the audited balance sheet and liquidity ratio with the level of measurement using the current ratio. The analysis method used is the classic assumption test, simple linear regression and t test. The research findings show that cash flow has a positive and significant effect on liquidity. Based on simple linear regression analysis, the coefficient of determination is 67.90%. Based on the results of the t test obtained a value of 3.888 the value is greater than the value of t table which is equal to 1.894 (t count = 3.888> t table = 1.894) then the effect of cash flow on liquidity is significant. The result of significance is 0.012, the value is smaller than 0.05 (sig value = 0.012 < 0.05) then the effect of cash flow on liquidity is significant.
Diagnosa Penyakit Kulit (Eksim) pada Anak Menggunakan Metode Dempster Shafer
Authors: Novi Yunanda Putri  , Achmad Fauzi  , Victor Maruli Pakpahan
Published: November 2024

Eczema is a chronic inflammatory skin disease characterized by mild to severe itching, and is recurrent. Eczema mostly appears when children are aged (5-12 years) but also affects many toddlers and adults. The main symptom of eczema is unbearable itching. Various factors cause eczema, including genetic factors related to skin color disorders, immunological disorders, and environmental factors and must be treated immediately or followed up by seeing a specialist.
Exploration on the Construction of Practical Teaching System for Engineering Management Major
Authors: Ren Chuxuan , Teng Shiqi , Yuan Mengting
Published: November 2024

With the rapid development of the economy and continuous technological progress, the teaching quality of engineering management majors needs to be continuously improved. Practical teaching, as an important component of undergraduate education, is an important way to improve the quality of undergraduate talent cultivation. Optimizing practical teaching can help undergraduate education cultivate excellent talents. In the process of cultivating engineering management majors, from the perspective of student employment, emphasis is placed on shaping students' basic knowledge application ability, practical ability, and technological innovation ability to meet the demand of enterprises for engineering management talents. This article takes the requirements for the cultivation of engineering management professionals stipulated by the Ministry of Education as the standard, clarifies the elements of engineering management talent cultivation, and the importance of engineering management practical teaching in talent cultivation. It constructs a practical teaching system for engineering management professionals from the aspects of teaching content, practical links, teaching methods and means, and teaching evaluation.
Research on Intelligent Control Algorithm of Complex Borehole Trajectory Based on Multi-objective Optimization
Authors: Gan Wei , Wang Bo
Published: November 2024

Effective wellbore trajectory control is essential in complex drilling environments, where precision and operational efficiency are critical to reducing costs and improving safety. Traditional trajectory control methods often face limitations in addressing multiple conflicting objectives, such as minimizing trajectory deviation while maximizing drilling efficiency. Traditional trajectory control methods often face limitations in addressing multiple conflicting objectives, such as minimizing trajectory deviation while maximizing drilling efficiency. This study presents an intelligent control approach utilizing the Non-Dominated Sorting Genetic Algorithm III (NSGA-III) for multi-objective optimization in complex wellbore trajectory control. designing and implementing a set of objective functions tailored to trajectory control requirements, this approach leverages NSGA-III' s ability to handle high-dimensional trajectories. s ability to handle high-dimensional objective spaces, achieving a balanced optimization across diverse performance metrics. Experimental results Experimental results verify the effectiveness of this approach, with Matlab simulations demonstrating significant improvements in trajectory accuracy and computational efficiency. This research provides a robust framework for multi-objective trajectory control and highlights the potential of NSGA-III in enhancing decision-making for complex drilling applications. decision-making for complex drilling applications.
Application Research of Domestic Digital Quantity Acquisition Controller Under the Background of Innovation
Authors: Zhuo Shufeng , Wei Lifen , Chen Chao , Zhou Youjin
Published: November 2024

Based on the background of information innovation, the development of intelligent sensing technology science is studied to provide agricultural modernization and intelligent transformation technologies with high quality, strong reliability, high cost performance and rich applicable scenarios for the national agricultural Internet of Things control, industrial automation, instrumentation and other industries. This project uses domestic components as the structural basis and domestic single-chip microcomputer chips as the main control carrier. It innovatively integrates autonomous controllable technology and uses the MODBUS protocol to achieve reliable data exchange between the controller and other devices. It designs a domestic digital quantity acquisition controller that can support 6-way isolated digital input interface, 12-way isolated digital output interface and 1-way 485 isolated communication, and is compatible with the standard MODBUS protocol, variant MODBUS protocol and protocol switching in different scenarios. It can not only meet the domestic and foreign market's demand for safety and reliability, but also greatly contribute to the autonomous controllability and technological innovation in my country's information technology field, and realize the sustainable development of autonomous controllable systems.
The Impact of Competition and Regional Synergy in The Yangtze River Delta on Manufacturing Firms' Production Efficiency: A Perspective Based on Transportation Logistics.
Authors: Liu Yunan
Published: November 2024

Regional coordinated development is a process based on regional comparative advantages, achieved through orderly division of labor and collaboration, aiming for relative balance, dynamic coordination, and full development between regions. Its core essence lies in narrowing regional disparities and seeking coordination and dynamic equilibrium among different areas. This article discusses the impact of regional competition and synergy on manufacturing enterprises in the Yangtze River Delta from the perspective of logistics and transportation. It covers the current status of regional logistics and economic integration, how to further promote the integration of manufacturing and distribution industries, as well as the current utilization rate of manufacturing capacity and existing issues. Taking "competition" and "synergy" as two focal points, the article studies the current economic development trends in the Yangtze River Delta and proposes solutions and recommendations for optimizing manufacturing capacity efficiency based on the emergence of industry clusters under the backdrop of "new logistics." Hopefully, this can serve as a reference and guide for the economic development of the Yangtze River Delta.
A Review of Vascular Health Research
Authors: IM JENGHYUN
Published: November 2024

The development of science has a purpose. From a medical point of view, these developments are all about promoting the healthy development of people and allowing people to live a disease-free life. In order to detect these diseases, scientists use different scientific means to detect the patient's physical condition, so as to use the right treatment. Blood vessels are a vital part of the human body. By using the medical technology MRI, CTA and CEUS, we are able to test the human body. These methods have their own characteristics so in different situation, their function and final result can be different. By combining them together properly, their own functions can be enhanced dramatically and their disadvantages can be minimized.
The Research Progress on the Improvement and Safety of Steviol Glycosides in Dyslipidemia of Diabetic Rats
Authors: Li Yixuan
Published: November 2024

Steviol glycosides, as natural sweeteners, are highly favored in the market. Moreover, they have shown outstanding effects in improving dyslipidemia. Most diabetic patients experience dyslipidemia, significantly increasing their risk of cardiovascular diseases. Steviol glycosides can improve dyslipidemia in rats by enhancing lipid metabolism, improving insulin conditions, and exhibiting antioxidant and anti-inflammatory properties. There have been no reports of toxicity or allergic reactions from the use of steviol glycosides in the past, and extensive research currently confirms their safety. Therefore, steviol glycosides hold promise as an adjunct medicinal food for improving dyslipidemia in diabetic patients, promoting their application in the medical and food industries.
Time-series Anomaly Detection Study Based on Deep Learning
Authors: Wu Wenjuan
Published: November 2024

With the rapid development of deep learning technology, anomaly detection based on deep learning has become an important research direction. This paper classifies and summarizes anomaly detection methods, covering traditional methods, machine learning-based methods, and deep learning-based methods. It particularly introduces typical deep learning models, analyzing their respective advantages and disadvantages. Experiments were conducted on two public datasets, and the performance of each model in anomaly detection was compared in detail.
Innovative Research on the Dissemination of Intangible Cultural Heritage and Tourism Development in Shaanxi Province Driven by Data
Authors: Liu Xingru , Cui Lingling , Wang Ziqi , Wang Yueyi , Shan Meijuan
Published: November 2024

With the strengthening of the state’s protection policies for intangible cultural heritage, the importance of intangible cultural heritage has become increasingly prominent. However, the attention paid to intangible cultural heritage in the field of tourism remains relatively low. Based on the data of intangible cultural heritage in Shaanxi Province, this paper analyzes the current situation and potential value of intangible cultural heritage through the application of visualization techniques, K-means clustering, and the Apriori algorithm. For this purpose, the concept of the Qingxing Travel APP is proposed to meet people’s tourism needs in a brand-new way of traveling, while achieving the effect of promoting tourism with culture and promoting culture with tourism.
The Role of Isotopic Geochronology in Earth Sciences
Authors: Hao Tingchen
Published: November 2024

Isotopic geochronology, a specialized field within isotopic geochemistry, has evolved through the interdisciplinary integration of geology, nuclear physics, and radiochemistry. By applying the principles of radioactive isotope decay, isotopic geochronology provides precise geological dating, forming scientific timelines for Earth's major evolutionary stages. This study offers a concise summary and discussion of isotopic dating principles, age representation methods, and the theories, applications, and formulas of widely used high-precision isotopic dating techniques. The primary isotopic dating techniques include: (1) The U-Pb dating method provides four simultaneous age values for a sample. Evaluating their consistency ensures higher reliability in the age determination. (2) The Rb-Sr method, employing isochron techniques, is mainly used for dating mafic, intermediate, and intermediate-acidic igneous rocks, with limited applications in metamorphic and sedimentary rocks. (3) The Sm-Nd method effectively dates mafic and ultramafic rocks and is widely applied in the study of ancient metamorphic rocks' age and genesis. Isochron techniques determine the formation time and initial Nd isotopic values of the source. (4) The Ar-Ar method offers high precision without requiring chemical treatment, thereby minimizing contamination and ensuring complete data integrity. Ages are determined through 40Ar/39Ar ratio analysis. (5) The Re-Os method is directly applicable to ore minerals and extensively used in dating and studying the genesis of metallic ore deposits.
Pandemi Döneminde Hemşirelerin Duygu Durum Değişiklikleri ve Etkileyen Etmenlerinin İncelenmesi
Authors: Dayanç İlknur , Tekin Pınar , Köse Özge
Published: November 2024

Amaç: Yaşamı tehdit eden COVID-19, akut solunum sendromu ve pnömoniye neden olan bir virüstür. COVID-19 hastalarıyla yakın temasda olan sağlık çalışanları, fizyolojik ve ruhsal sağlık sorunları ile karşılaşmıştır. Salgın ve karantina; travma sonrası stress bozukluğu, kaygı belirtileri, öfke, uyku sorunları, uyum bozukluğu ve takıntılar gibi psikolojik tepkilere neden olmuştur.
Yöntem: Tanımlayıcı ve kesitsel nitelikteki çalışma 27 Mayıs - 31 Aralık 2021 tarihleri arasında yapılmıştır. Örneklemi araştırmaya dahil edilme kriterlerine uyan 352 hemşire oluşturmuştur. Veriler ‘‘Tanıtıc Bilgiler Veri Formu’’ ve “Çok Boyutlu COVID-19 Ölçeği” elektronik anket formları ile elde edilmiştir. Verilerin analizi SPSS 24.0 ile yapılmıştır.
Bulgular: Araştırmaya katılanların bireylerin %86,1’i kadın, %78,7’si 20-30 yaş aralığında, %31,8’i lisans mezunu, %75,3’ü bekar ve %81,5’i çocuk sahibi değildir. Çalışmada kişilerin Çok Boyutlu COVID-19 Ölçeği puan ortalaması 78,20±21,58’dir. Eğitim durumu, birlikte yaşanan kişiler, birlikte yaşanan kişilerden ayrı yaşamaya başlama durumu ve birlikte yaşanan kişilere virüs bulaştırma ihtimaline karşı kaygılanması durumu ölçek alt boyutlarında anlamlı fark bulunmuştur (p
Construction and Characterization of a Full-Length Infectious cDNA Clone of a Strain of Watermelon Mosaic Virus Isolated from Melon
Authors: Kwak Hae-Ryun , Hong Su-bin , Kim Jeong-Eun , Byun Hee-Seong , Lee Bong-Choon , Choi Hong-Soo , Kim Mikyeong
Published: November 2024

Watermelon mosaic virus (WMV), a member of the genus Potyvirus, causes serious economic losses in cucurbit crops. For molecular biological studies of viruses, it is necessary to construct an infectious clone that can facilitate gene functional analysis. In this study, we constructed an infectious cDNA clone of WMV genomic RNA by Gibson assembly and evaluated its virulence and symptoms on a variety of host plants. A WMV isolate (WMV-IS-me2) collected from melon in Iksan, Jeonbuk Province, Korea in 2015 caused mosaic symptoms on leaves. Four overlapping PCR fragments of the full-length genome of this isolate and the pJL89 binary vector with overhanging ends of 40 bp were amplified by reverse transcription PCR and joined in a single isothermal reaction. The complete nucleotide sequence of the infectious cDNA clone of WMV was determined and the recombinant vector was transformed into Agrobacterium tumefaciens GV3101. Following agro-infiltration, an infectious clone (pWMV-M, KACC95145P) systemically induced mosaic symptoms on watermelon (Citrullus lanatus), zucchini (Cucurbita pepo), melon (Cucumis melo), and Nicotiana benthamiana plants. This infectious clone may be useful for screening cucurbit varieties resistant to WMV, as well as for studying viral gene function.
Mycological and Genomic Characterization of Fusarium vorosii, a Potentially Pathogenic Fungus, Isolated from Field Crops and Weeds in Korea
Authors: Jeong Eunji , Lim Jae Yun , Seo Jeong-Ah
Published: November 2024

Fusarium vorosii (Fv) is one of the least studied species of the Fusarium graminearum species complex, a major plant pathogen causing Fusarium head blight (FHB) in a variety of crops. In this study, we isolated 12 strains of Fv from cereal samples with FHB symptoms and gramineous weeds. Trichothecene genotyping of Fv strains showed that 10 strains were nivalenol (NIV) type and 2 strains were 15-acetyldeoxynivalenol (15ADON) type. Fv strains have similar mycological characteristics to Fusarium asiaticum, a major FHB pathogen of rice in Asia, however, asexual sporulation was at least 100 to 1,000 times higher in Fv. In comparison of pathogenicity, the Fv-15ADON type was more pathogenic than the NIV type in both rice and wheat, and had a similar level of pathogenicity as the F. asiaticum-NIV type. Among the 12 Fv strains, two representative ones, Fv-NIV type RN1 and Fv-15ADON type W15A1, were selected and their whole genomes were sequenced and analyzed. Complete genome sequences of two Fv strains, RN1 and W15A1, were assembled at the chromosome level with high quality compared to known Fv genomes. The genome data of the two Fv strains were compared with the reference strains already known. As a result of comparative genome analysis, it was found that they are phylogenetically related according to the trichothecene biosynthetic gene cluster, that is, toxin chemotype. Through this study, we provided important information about Fv species that can be potential pathogens in domestic crops about biological and genomic characteristics.
A Novel and Advanced Diagnostic Approach toward Paracidovorax citrulli Causing Bacterial Fruit Blotch in Watermelon by Direct SYBR Green Real-Time PCR Assay
Authors: Ham Hyeonheui , Lee Bang Wool , Kim Kyongnim , Lee Woohyung , Lee Yong Hwan , Park Dong Suk
Published: November 2024

Bacterial fruit blotch (BFB) caused by Paracidovorax citrulli is a devastating disease in cucurbit hosts such as watermelon. P. citrulli is a seed-borne pathogen, and contaminated seeds are the primary inoculum. Because it is difficult to control BFB after the emergence of the disease, it is essential to detect the pathogen and remove infected plant materials, including seeds, in the early stages. In this study, we developed a direct SYBR Green real-time polymerase chain reaction (PCR) method using a new species-specific marker for detecting P. citrulli with high specificity and sensitivity. The genome information of P. citrulli and related species was collected and compared to retrieve the P. citrulli-specific gene. The primer set RS01560-164 was designed based on the selected gene and tested for specificity and sensitivity using cloned DNA, genomic DNA, cell suspension, and suspensions obtained from infected watermelon cotyledons. Our primer set detected only P. citrulli from the closely related species with a detection limit of cloned DNA at 1.46 × 103 copies/µl, gDNA at 500 fg/µl, and cell suspension at 1.4 × 104 cfu/ml by real-time PCR. Our method also detected P. citrulli from diseased plants without the need for a DNA extraction phase. Therefore, the primer set and real-time PCR methods newly developed in this study could be applied for the specific detection of P. citrulli in plants or seeds with high sensitivity and robustness, providing the potential to manage BFB in cucurbits.
Development of TaqMan-Based Real-Time qPCR Method for Accurate Detection and Quantification of Citrus Psorosis Virus and Cytoplasmic-Type Citrus Leprosis Virus in Saplings
Authors: Jung Minhue , Kim Na Hee , Oh Seung Hyeon , Kim Kook-Hyung
Published: November 2024

In 2022, citrus fruits were the second most widely produced fruit globally, highlighting their significant role in the fruit industry. However, due to their clonal propagation, these fruits are highly susceptible to viral infections, posing challenges for growers. In response to the booming nursery market, the Korean plant quarantine station reported over 80 million sapling stocks, with 15% being discarded after rigorous inspection due to contamination or disease. As the global nursery trade continues to expand, there is an urgent need for a fast and accurate diagnostic tool to ensure the health of plant stocks. In this study, we developed a TaqMan-based real-time reverse transcription-quantitative PCR assay specifically designed to detect two critical citrus viruses: citrus psorosis virus and citrus leprosis virus C. Our assay demonstrated the capability to detect virus sequences with as few as 30 copies, maintaining high PCR efficiency with RNA extracted from both twig and leaf tissues. Additionally, we incorporated an artificial sequence into the positive controls, which effectively served as a marker for detecting potential sample contamination. This comprehensive diagnostic system promises to enhance plant quarantine measures and phytosanitation practices, providing a reliable and efficient solution to safeguard citrus crops from viral threats.
Studies on English Reading Teaching Methods on College Students
Authors: Wang Siyu
Published: November 2024

College students will face more and more English textbooks and papers in their studies and research, so reading quickly and efficiently is an ability that college students should have. However, for most students, it is a challenge for them. Because the traditional reading teaching methods, based on English scores, do not truly improve their reading ability, even students with better English scores cannot understand the text content correctly. Therefore, this paper will introduce three reading methods that are different from the traditional one: the Problem-based learning (PBL) teaching method, the Narrative teaching method, and the Genre-based teaching method. The purpose is to change the teaching mode of the one-way output of core English knowledge by the teacher, take the students as the teaching centre, and improve reading ability as the teaching goal. Teachers will guide the students to master English knowledge in cooperative learning and to improve their reading ability with novel teaching methods.
An Investigation of Parental Consent Principles and Their Effects on TGDNB Minors Access to Hormone Therapy in Australia
Authors: Shen Yitong
Published: November 2024

In Australia, the legal and ethical discourse regarding parental consent for gender-affirming hormone therapy (GAHT) has significant complexity and represents an evolving dynamic of discourse. The role of parental consent in minors access to GAHT has become increasingly complicated with laws and policies changing in response to societal perspectives on gender identity, the involvement and role of the courts is a determining factor in minors' access to GAHT. Simultaneously it is intensely associated with the minors individual consent and the scope of medical practitioners' responsibilities. As established by Gillick V. West Norfolk and Wisbech Area Healthy Authority, the Gillick competency principle recognises that minors are allowed to make decisions independently if they have sufficient maturity and capacity to understand the implications and consequences of such decisions. The Australian jurisprudence, at present, was initially considered to recognise the Gillick competency principle. However, as the jurisprudence continues to evolve, the legal attitude regarding minors' access to GAHT treatment in Australia has deviated from the Gillick competency principle due to the tendency of parental protectionism in Australia. This thesis starts with the content and the reasoning of the Gillick Competency Principle, to discuss its practice and applications in Australia, as well as its implications regarding the Parental Consent Principle and the accessibility of GAHT to minors. Meanwhile, providing suggestions regarding the improvement of the present situation.
The Impact of Studies on Production-Oriented Approach Used in Teaching in College System
Authors: Ge Anqi , Yao Tianlun
Published: November 2024

The need for innovative teaching methods that are appropriate for today's classrooms has grown as a result of China's internal education system reform. With the ongoing advancements in Chinese education, the conventional method of instruction is no longer appropriate for the country's demands. In addition to fostering a closer relationship between students and instructors in the classroom, the new teaching technique known as POA (Production-Oriented Approach) theory also works to advance China's educational system. The topic of collegiate English teaching in China is the focus of this study, which attempts to investigate the good and bad impacts of the POA theory on the numerous subjects engaged in this particular profession. Therefore, by examining the justifications for the use of the POA theory and its influencing mechanisms, this study employs the literature review approach to describe the benefits and drawbacks of implementing the POA theory.
The Impact of Family of Origin on Attachment Relationships and Emotional Regulation Ability
Authors: Peng Xin
Published: November 2024

As it will be highlighted in this literature review, there is a connection between family of origin and the capacity of the person to form attachments and regulate emotions. It depicts how family structure, parenting styles, and emotional climate impose on psychological growth throughout the years of life. First, the focus of the study is to indicate that attachment and emotional regulation are intertwined, as established by the demonstration of how a secure attachment enhances emotion regulation. On the other hand, anxious or avoidant attachments may result in difficulty in working through issues and psychological symptoms. Therefore, the present paper aims at reviewing the literature on different family environments and their impact on children's emotional well-being, with special reference to nuclear and single-parent families. It also examines the roles of the family communication patterns and the conflict resolution styles in the development of emotional regulation skills. Finally, the implications of the study underscore the importance of the family of origin as a source of emotional well-being and interpersonal relations and provide guidance for future investigations and therapeutic approaches toward psychological well-being.
The Influence of Language on Color Cognition in Different Cultural Backgrounds
Authors: Fei Yi
Published: November 2024

It has been firmly established that one's native language influences ones worldview. This article delves into this concept through three experiments, examining the fundamentals of color perception, variations in color naming across different cultural contexts, and the relationship between language and color cognition. The first experiment revealed that Greek speakers distinguish colors faster than English speakers. In the second experiment, Mongolian language users differentiated visual search displays belonging to distinct linguistic categories more swiftly than those within the same category. These findings solidify the subtle impact of specific linguistic terms on human color perception. Numerous studies conclusively link color cognition with language, albeit the precise mechanisms vary. Furthermore, such effects can be altered, for instance, by learning to better distinguish blue from green. The article explores the underlying reasons for these differing impacts of language on color cognition and how they might be manipulated. It offers deeper insights into how language shapes our understanding of color.
Operation and Exploration of the International Top Talent Innovation Training Program
Authors: Ji Yanli , Luo Xiong , Chen Jian
Published: November 2024

The Top Talent Training Program, initiated by the University of Science and Technology Beijing in Spring 2024, exemplifies a pioneering approach to globalizing Chinese higher education. This comprehensive program, backed by the China Education Association for International Exchange, leverages directives from Chinas national educational strategy and the global expertise of over one hundred distinguished professors from world-renowned institutions. Offering 103 courses entirely in English, the program spans diverse disciplines, emphasizing interdisciplinary knowledge and real-world application through a dual-phase educational model. The initiative not only bolsters the international competencies of students but also fosters significant academic and professional advancements. This paper evaluates the programs design, implementation, and outcomes, highlighting its profound impact on students and suggesting future directions for expanding its global and educational reach.
Bilingual Learning for Young Children
Authors: Xia Yuqing
Published: November 2024

This study examines the impact of immersion education on the native language (L1) proficiency of adolescent bilingual learners. Immersion education, where most academic instruction is provided in a second language (L2), aims to foster bilingualism while achieving academic competence. However, there are concerns about the effect of this educational model on learners' L1 development, particularly during adolescencea critical period for cognitive and academic language growth. Drawing from existing research on bilingualism and immersion education, this paper explores the balance between L2 acquisition and L1 maintenance. It emphasizes the role of home language support, school environment, and broader sociocultural contexts in shaping language outcomes. The findings suggest that while immersion programs are effective in promoting L2 proficiency, they may lead to a decline in L1 academic skills unless deliberate efforts are made to support L1 development. Key factors influencing L1 maintenance include the amount of L1 exposure, parental and community support, societal attitudes towards bilingualism, and specific classroom practices that integrate L1 use. This study underscores the importance of balanced bilingualism, where both L1 and L2 are valued, and provides practical implications for educators and policymakers to create supportive environments for adolescent bilingual learners.