bluuebunny/crossref_metadata_2025 huggingface dataset:
Platinum and the Refractory Oxides
Authors: Darling A. S. , Selman G. L. , Rushforth R.
Published: February 2024

Severe reactions can occur between heated platinum and the more refractory oxides when the oxidising potential of the surrounding atmosphere is reduced below a critical level. In the second part of this paper it is shown that the severity of these reactions is largely controlled by the surface area of the refractory and by the ability of oxygen to escape from the reaction zone. Alloying occurs predominantly by vapour phase processes. Under vacuum conditions complicating effects are introduced by platinum vapour particularly in the presence of steep temperature gradients.
Rhodium-Platinum Thermocouples as Precision Temperature Sensors
Authors: Carter D. F. , Wells P. H.
Published: February 2024

The standard of accuracy of all platinum: rhodium-platinum thermocouples produced by Johnson Matthey Metals Limited is extremely high. However, individual thermocouples for special purposes can be supplied to even higher standards of accuracy following their precision calibration by the National Physical Laboratory.
Cluster Compounds of the Platinum Metals
Authors: Johnson Brian F. G.
Published: February 2024

In recent years metal cluster compounds with large numbers of metal atoms in the molecule have been prepared and characterised. The intermediate role of such clusters between monometal co-ordination compounds and metal surfaces is apparent, and is of great importance in studies of surface reactions for use in catalytic and other industrial processes. Investigation of the modification of the behaviour of carbon monoxide and simple organic ligands on co-ordination to such “metal fragments” is consequently one of the most rapidly expanding areas of chemical research.
The Surface Properties of the Platinum Metals
Authors: Bullett, D. W.
Published: February 2024

An international conference on surface science was held at the Cavendish Laboratory, University of Cambridge, in March. More than ninety papers were presented, covering a very broad range of topics in surface science. This review concentrates only on those contributions particularly concerned with the platinum metals.
William Cary and His Association with William Hyde Wollaston
Authors: Chaldecott John A.
Published: February 2024

A comparison of entries in notebooks kept by William Hyde Wollaston with the records of an account that he maintained in the bank of Thomas Coutts & Co, London, serves to establish that approximately three quarters of Wollaston’s output of malleable platinum was disposed of through the London scientific instrument maker, William Cary. This article reviews the relationship between these two men, the nature of their business association and their incomes from the sale of platinum.
Electroplating the Platinum Metals
Authors: Buchanan Peta D.
Published: February 2024

The successful development of gold and silver plating in 1840 led to a number of scientists turning their attention to the electrodeposition of platinum and palladium, but before commercially satisfactory processes could be established they met with considerable difficulties because of the insolubility of the anodes and of the complex nature of the chemical compounds of these metals.
Solid State Bonding of Ceramics with Platinum Foil
Authors: Allen R. V. , Bailey F. P. , Borbidge W. E.
Published: February 2024

The solid state reactions that take place between many ceramics and metals can be utilised to produce strong vacuum-tight joints that maintain their strength and durability even at elevated temperatures. In this context platinum can play an especially important role because of its high melting point and resistance to chemically aggressive environments. Some industrial applications of the solid state bonding process using platinum are described in this article, which also includes some data on the properties of joints made in this way.
Justus Erich Bollmann and His Platinum Enterprises
Authors: Chaldecott John A.
Published: February 2024

Credit for first producing malleable platinum in North America in sufficient quantity to satisfy the needs of American industry and commerce must go to Justus Erich Bollmann, whose sheet platinum went into the construction of the first platinum still to be used in America for the concentration of sulphuric acid. An account is provided of the development of Bollmann’s business and of his efforts to create new outlets for the metal.
International Fuel Cell Workshop
Authors: Watanabe M. , Stonehart P.
Published: February 2024

The first International Fuel Cell Workshop was held at the Tokyo Institute of Technology, Japan, on 16th September 1989. This meeting was supported by The Fuel Cell Committee of the Electrochemical Society of Japan, and the International Society of Electrochemistry. The workshop co-chairmen were Drs. Masahiro Watanabe and Paul Stonehart. Dr. Ken-Ichiro Ota of Yokohama National University, Japan, acted both as workshop secretary and as moderator for the molten carbonate presentations, while the steering group consisted of representatives from various Japanese fuel cell companies.
Ruthenium-Cobalt Alloy Electrodeposition
Authors: Juzikis P. , Gudavičiūtŧ L. , Matulionis E.
Published: February 2024

Since little has been written about ruthenium alloy plating, the present work sets out to provide data on the electrodeposition of ruthenium-cobalt alloys, using a sulphate-sulphamate electrolyte. Some operating conditions have been obtained for the production of thin crack-free coatings of ruthenium-cobult alloys.
Ruthenium Effect on the Transformation in Equiatomic Titanium-Nickel Alloy
Authors: Semenova E. L. , Rusetskaya N. Yu. , Petyukh V. M. , Listovnichiy V. Ye.
Published: February 2024

Martensitic transformations in equiatomic titanium-nickel and titaniumnickel based alloys are of interest because they are associated with the shape memory effect. Equiatomic titanium-nickel, which possesses such superior mechanical properties as high strength, elevated ductility and corrosion resistance, is the most important of several shape memory alloys. Here, the character of the martensitic transformalion in equiatomic titanium-nickel alloy with some of the nickel replaced by ruthenium is discussed. Data are presented on the temperature of the transformation upon heating and cooling, the transformation sequence and the stabilisation of the high temperature phase in TiNi-TiRu alloys, using electrical resistance, thermal expansivity and differential thermal analysis between ~300°C and liquid nitrogen temperatures. Alloys which contained 0.5 to 2 atomic per cent ruthenium were found to undergo a two stage transformation, while the high temperature phase in titanium-nickelruthenium, which has B2-type crystal structure, was stabilised by the addition of 2 atomic per cent ruthenium.
Some New Aspects of the Photoreactions of Platinum Metals Complexes
Authors: Weiping Liu , Yikun Yang , Huizhou Xiong , Wenfu Fu
Published: February 2024

Photochemical reactions of platinum metals complexes are of great importance in contributing to the understanding of the chemical reactivity and catalytic properties of platinum metals catalysts. This paper reviews some new aspects of this photochemistry and discusses potential applications
in synthesising novel complexes and in exploiting platinum metals-containing catalysts. Among aspects examined are recent trends in the photochemistry of co-ordination compounds, particularly photointramolecular rearrangements, photoredox elimination and addition reactions, and the photoredox
reactions of polynuclear complexes.
Catalysts for Butane Reforming in Zirconia Fuel Cells
Authors: Kendall K. , Williams D. S.
Published: February 2024

The ability of fuel cells to use hydrocarbon fuels efficiently is important if they are to compete with battery power. Solid oxide fuel cells, particularly zirconia fuel cell devices, are generally well suited to utilise a variety of fuels. They are commercially attractive, especially
in remote locations where battery supply and maintenance costs are prohibitive but where fuel, particularly butane, is readily available. Butane can be safely stored at high energy density and is thus a useful fuel for zirconia fuel cells in remote areas. Partial oxidation would be the preferred
route to reform butane, but this requires a suitable catalyst. Ruthenium is an excellent partial oxidation catalyst, giving nearly total reformation of butane and producing high levels of hydrogen. However, problems such as carbon deposition and catalyst optimisation need to be addressed.
Here, work with a zirconia fuel cell successfully fuelled by butane and using a ruthenium catalyst under controlled reaction conditions is discussed.
The Value of Systemic Immune-Inflammation Index and T Cell Subsets in the Severity and Prognosis of Sepsis
Authors: Zhou Hao
Published: February 2024

Systemic immune-inflammation index (SII) and T cell subsets show involvement in mortality risk in septic patients, and we explored their predictive value in sepsis. Subjects were categorized into the Sepsis (SP)/Septic Shock (SSP)/Septic Shock (SPS) groups. T cell subsets [T-helper (Th)1, Th2, regulatory T cells (Treg), Th17]/platelets (PLT)/neutrophils (NEU)/lymphocytes (LYM)/C-reactive protein (CRP)/procalcitonin (PCT)/interleukin (IL)-4/IL-10/fibrinogen (FIB) were measured by an automatic blood biochemical analyzer/flow cytometry/Countess II FL automatic blood cell analyzer, with SII calculated. The correlations between SII/T cell subsets with Acute Physiology and Chronic Health Evaluation (APACH) II/Sequential Organ Failure Assessment (SOFA) scores and the predictive value of SII/Th1/Th2 for septic diagnosis/prognosis were analyzed using Spearman/ROC curve/Kaplan-Meier. The three groups varied in PLT/NEU/LYM/CRP/PCT/IL-4/IL-10/FIB levels and APACH II/SOFA scores. Compared with the SP group, the other two groups showed elevated APACH II/SOFA scores and SII/Th1/Th2/Th17/Treg levels. SII/Th1/Th2 levels significantly positively correlated with APACH II/SOFA scores. SII/Th1/Th2 levels had high predictive value for septic diagnosis/prognosis, with their combination exhibiting higher predictive value. Septic patients with high SII/Th1/Th2 levels exhibited lower survival rates. Altogether, SII, Th1, and Th2 had good predictive value for the diagnosis and prognosis of patients with varying severity of sepsis, with their high levels increasing mortality in septic patients.
Including Children's Views in Divorce Mediation: A Comparative Analysis and Recommendations or Kenya
Authors: Nyaata Vivian , Zaal Frederick Noel , Peté Stephen Allister
Published: February 2024

It is important that the views of children be considered during the process of their parents' divorce. Parental divorce mediation informed by the needs of children is more likely to produce better outcomes. The ways in which divorce mediators in South Africa, Australia and Kenya consider views of the children of marriages in the process of dissolution are compared. The extent to which these three countries have domesticated and implemented relevant international law and policies is compared. Recommendations are provided for Kenya, where empirical research was undertaken to establish the practices and attitudes of Kenyan divorce mediators. The outcome of this empirical research indicates that – prior to mediating between their parents – most of Kenya's divorce mediators fail to elicit the views and wishes of the children who will be affected by the divorce. Proposals are put forward on how this may be rectified. In formulating these proposals, practices in South Africa and Australia are examined for the purposes of comparative analysis. The recommendations for Kenya include the formulation of appropriate laws and policies; the establishment of cost-effective mechanisms for hearing the voices of children prior to their parents' divorce mediation; and the education of the general public on the importance of considering the views and wishes of children when their parents are divorcing.
LEGAL ASPECTS OF THE FOURTH INDUSTRIAL REVOLUTION (4iR) – (with specific reference to ChatGPT and other software purporting to give Legal Advice)
Authors: DP van der Merwe
Published: February 2024

In the present article, the author explains the tremendous impact that Artificial Intelligence (AI) is likely to have on society in general. After a historical overview that covers the Fourth Industrial Revolution, the article also considers how the various legal disciplines are likely to be affected by the arrival of AI. This includes an evaluation of the legal advice likely to be given by new “experts” from these two disparate fields.
El tratamiento de la variación fonética en manuales de ELE creados en Colombia: un estudio de caso
Authors: Nieto Martín Gloria Viviana
Published: February 2024

El creciente interés por aprender español en/de América ha potenciado la oferta académica, la formación de profesores, la investigación, la producción de materiales didácticos y la certificación del dominio de lengua en el continente. Si bien los primeros testimonios de enseñanza de español como lengua extranjera en Colombia datan de 1960, la publicación de materiales didácticos propios no inició antes de 2008. Este artículo presenta un breve panorama de la producción de manuales de ELE en Hispanoamérica, en general, y en Colombia, en particular. Asimismo, a manera de estudio de caso, describe el tratamiento de la variación fonética en el manual CántELE. Música colombiana para la clase de español como lengua extranjera, volúmenes 1 y 2, publicado por el Instituto Caro y Cuervo (2021 y 2022), mediante actividades que abordan tanto fenómenos fonéticos segmentales como suprasegmentales del español de Colombia, encaminadas al desarrollo de la conciencia fonológica de los aprendientes de ELE. A lo largo del artículo se muestra que, durante las dos últimas décadas, la enseñanza de ELE en Colombia, como en otros países del continente americano, se ha alejado del modelo castellano para arraigarse en el modelo más cercano (español de mi tierra), siguiendo la denominación de Moreno Fernández (2007 y 2010).
Concurrencia de fonemas homólogos en el discurso oral entrecortado de estudiantes japoneses de ELE
Authors: Fernández Alonso María
Published: February 2024

The oral discourse of Japanese students of Spanish as a Second Language is distinguished by an intermittent delivery with frequent pauses in between the words. The research of this study involves a phonosyntactic feature of Spanish that consists of the combination of two words, with the last sound of the former being the same as the first sound of the latter. A didactic unit was designed to work on this phenomenon and the impact of the intervention was assessed. For this purpose, empirical data collected from two oral productions tests that were conducted before and after the application of the sequence was analyzed. Statistical analysis methods are used to conclude that this prosodic error can be corrected using materials that include lexical, grammatical, and communicative contents integrated in the syllabus of a Spanish course.
The Parkinson’s Progression Markers Initiative (PPMI) Clinical - Establishing a Deeply Phenotyped PD Cohort v1
Authors: Marek Kenneth
Published: February 2024

This protocol details the Parkinson’s Progression Markers Initiative (PPMI) Clinical - establishing a deeply phenotyped PD cohort.
Health-related quality of life in patients with lung cancer
Authors: Han Libo , Li Ri , Wang Xia
Published: February 2024

Lung cancer has been the most common type of cancer worldwide for several decades. 55 patients treated for lung cancer with a mean age of 60.9±4.2 evaluated through Health-related QoL (HRQoL) were assessed individually using the valid and reliable questionnaires Cancer Quality of Life EORTC (QLQ) - C30 and QLQ - H&N35. The functioning scale in the QLQ-C30 questionnaire with the lowest average score was global health status. The mean QLQ-C30 summary score (77.17 ± 11.4). The symptoms with the highest scores were dyspnea, weight loss, and muscle atrophy. Linear regression analysis demonstrated that Global health status score was associated with education level [β-coefficient = 15.21 (95% CI: 10.2-21.9, P=0.01], alcohol consumption [β-coefficient=11.02 (95% CI: 5.3-16.3), P=0.01]. In conclusion. This study demonstrated several predictors of worse perception of HRQoL through study. Moreover, these predictors should be the focus of preventive measurements, early detection of lung cancer, and target therapy.
“Migrants are citizens too!”: Everyday acts of citizenship and the lived experiences of Venezuelans across the Andes
Authors: Palma-Gutiérrez Mauricio
Published: February 2024

Amid one of the largest ongoing cross-border migration processes in the world, Venezuelans living across the Andes are often categorized as non-citizens by the governments of the countries they reside in. Full access to their rights is limited by dominant legal technologies of population governance, centered on positioning individuals as subjects in/of nation-states, under different political /juridical statuses instrumental to consolidate objectives of ‘migration management’. Yet, by embracing diverse, and meaningful acts of citizenship, many have found creative ways to perform citizenship in countries such as Colombia, Ecuador, Peru, and Chile; allowing them access to some rights that otherwise could not be effectively claimed. In this article, I use 23 interviews with migration activists in these four countries to explore the formation of a specific form of political subjectivity in the case of Venezuelans, through the dual lens of acts of citizenship and of performative citizenship. I argue that in absence of an equivalent legal status, quotidian actions derived from different productive and creative acts are essential in enabling a disruptive form of lived citizenship across an alternative, evolving space for politics in the Andean region.
Sources of Reactive Oxygen Species in Normoxic and Hypoxic Naked Mole-Rat Brain
Authors: Eaton Liam , Bengtsson John , Welch Isabella , Halal Abdul , Pamenter Matthew
Published: February 2024

Oxygen availability dictates the rate of reactive oxygen species production from various cellular sources; excessive ROS accumulation can be cytotoxic. Mitochondria are usually the primary contributors to basal reactive oxygen species generation in the brain; however, xanthine oxidoreductase and nicotinamide adenine dinucleotide phosphate oxidase can also produce considerable reactive oxygen species during hypoxia/reoxygenation. In the brains of most mammals, cellular death accompanies hypoxia-mediated surges in reactive oxygen species production, but this is avoided in the cortex of hypoxia-tolerant naked mole-rats (Heterocephalus glaber). However, the contributions of various reactive oxygen species generators towards total reactive oxygen species homeostasis in naked mole-rat brain is unknown. We hypothesized that mitochondria remain the primary reactive oxygen species generators in naked mole-rat cortex and predicted that pharmacological inhibition of mitochondrial complex I would induce greater fluctuations in superoxide (O2•-) and hydrogen peroxide (H2O2) than inhibition of xanthine oxidoreductase or nicotinamide adenine dinucleotide phosphate oxidase. To test this, we used fluorescence microscopy to measure H2O2 and O2•- production from cortical slices during normoxia and hypoxia while pharmacologically inhibiting mitochondrial complex I, xanthine oxidoreductase, or nicotinamide adenine dinucleotide phosphate oxidase. Unexpectedly, we found xanthine oxidoreductase inhibition induced the greatest increase in O2•- during normoxia and hypoxia (~100% and 70%, respectively). Hypoxic inhibition of nicotinamide adenine dinucleotide phosphate oxidase induced the greatest decrease in H2O2 by ~35% below baseline. Finally, although inhibition of mitochondrial complex I during hypoxia yielded significant fluctuations in O2•- and H2O2, these changes were considerably smaller than fluctuations induced by inhibiting xanthine oxidoreductase or nicotinamide adenine dinucleotide phosphate oxidase. Together, and unlike in other rodent brain, our results suggest that xanthine oxidoreductase is the primary contributor to reactive oxygen species production in naked mole-rat cortex.
Alterations in Cortical Thickness in Children with Congenital Strabismus and Dissociated Vertical Deviation
Authors: Gallegos-Duarte Martín , Mendiola-Sántibañez Jorge
Published: February 2024

Introduction: Little is known about the morphometric changes that occur in the cerebral cortex of children with congenital strabismus and Dissociated Vertical Deviation (DVD). Mathematical morphology provides the opportunity to discover alterations in cortical thickness. Objective: Identify and measure differences in cortical thickness in children with congenital strabismus and DVD. Materials and Methods: Twenty-two MRI brain studies were conducted, each comprising 120 sagittal slices of 1 mm. A cohort of 11 healthy children formed the control group, and a cohort of 11 children with congenital strabismus and Dissociated Vertical Deviation, both in Dissociated Esotropia and Dissociated Exotropia formed the case group. Differences in cortical thickness between both groups were compared and identified using the FreeSurfer suite. Subsequently, areas of interest were analyzed using the ImageJ program to determine density, area, size, and pixel quantity in these regions. Study results are presented through tables and figures. Results: Twelve inflated brain projections were obtained from 2640 MRI images. Thickness differences between both groups exhibited three areas with significant morphometric changes: the Left Angular Gyrus, Left Supramarginal Gyrus, and Right Pars Opercularis. Discussion: Children with congenital strabismus and DVD showed changes in cortical thickness that could be identified and measured through Voxel-Based Morphometry (VBM). It is plausible to consider that these changes are related to suppression, aiming to avoid diplopia.
Dynamic Adaptive Gamification Framework to Improve User Gamification Experience for Online Training
Authors:   Faculty of Computing and Informatics, Multimedia University, Cyberjaya, Malaysia, Shabadurai Yogeswari , Chua Fang-Fang , Lim Tek-Yong
Published: February 2024

In recent years, there has been a notable increase in the utilization of gamification for online training. Following the “one-fits-all” approach to designing a gamification experience for all participating users can be a significant disadvantage as all users are given the same experience. Previous approaches commonly used the static player profile that was obtained at the very beginning or initial stage of the user experience and presented the user with the gamification experience according to the fixed player type. This motivates the need for an adaptive gamification environment in online training. A dynamic adaptive gamification framework is proposed to introduce a gamification framework consisting of a method to correlate player types and game elements. The correlation is aimed at identifying the evolvement of players through interaction with game elements and observing how these player profiles are motivated to change over time. The study also presents an evaluation method to measure motivation in adoption and engagement in online training to reduce boredom and improve the overall user experience of the player.
Development of FonBi Application: A Phonetic Transcription Tool Assisted by Artificial Intelligence for Indonesian Language
Authors:   Department of Indonesian and Regional Language and Literature, Faculty of Language and Arts, Universitas Negeri Padang, Padang, Indonesia
Published: February 2024

This study discusses the development of FonBi (Fonologi Bahasa Indonesia or Phonology of Indonesian Language in English), a phonetic transcription tool designed to aid foreign speakers learning Indonesian. The research highlights the challenge of ineffective language learning for BIPA (Bahasa Indonesia bagi Penutur Asing or Indonesian Language for Foreign Speakers) learners due to the complex phonological system of Indonesian. To address this issue, the study followed a development cycle model and created FonBi, aimed at improving learning effectiveness and accelerating the language mastery process. The application provides accurate and precise phonetic transcription to help learners better understand and master the Indonesian language. The validation results from material and media experts indicate that FonBi is “very feasible,” while limited testing by students suggests that it is also feasible. The study concludes that FonBi could provide an innovative solution for BIPA learners, bridging the gap between Indonesian speakers and foreign learners by enabling them to properly understand and pronounce the language. Overall, this study highlights the importance of phonetic transcription in language learning and the value of developing tools like FonBi to improve learning outcomes. By providing a user-friendly and accessible tool, FonBi has the potential to greatly enhance the learning experience of BIPA learners, and potentially serve as a model for developing similar tools for other languages and contexts.
Academic Program for the Relationship with Companies: An M-Learning Strategy to Promote University-Business Collaborations
Authors:   Didactics, Organization and Research Methods Department, University of Salamanca, Spain, Torres-Taborda Sandra
Published: February 2024

The interest in including mobile learning (m-learning) in training processes has grown considerably. In recent years, there is evidence of a progressive research production on the subject; especially in Latin America, it is seen as an alternative to bridge the educational gaps. In the context of higher education in Colombia, most university students work full-time and study at night, it makes it difficult for them to do internships and makes them feel vulnerable when taking on job positions associated with their profession. Our goal is to create a virtual internship laboratory supported by a mobile application developed specifically for this purpose. It combines Problem-Based Learning (PBL) with Action- and Decision-oriented Research (ADR). Through a descriptive qualitative study, a mobile application is designed and validated to promote the university-business relationship, it was named Academic Program for the Relationship with Companies (PARCE, i.e., Programa Académico de Relacionamiento con Empresas). The introduction contextualizes university education in Colombia and the receptivity of mobile learning, subsequently, the article describes the technical characteristics and qualities of the developed mobile application, as well as the methodology, approach, and data collection process. The information is analyzed by descriptive statistics categorized by dimensions to assess the impact of the mobile application on internship processes in a higher education institution. The academic performance was positively assessed with respect to the development of skills and professional abilities acquired and enhanced thanks to the flexibility of the mobile application and the PARCE program. Although it has been designed especially for internship processes, it is adaptable to different areas of knowledge and educational levels. The most recurrent rating of the program, on a scale from 1 to 5, by entrepreneurs was 4.82.
Smart Evaluation: A New Approach Improving the Assessment Management Process through Cloud and IoT Technologies
Authors:   Faculty of Sciences Ben M’Sik, LTI Laboratory, Hassan II University, Casablanca, Morocco, Dehbi Amine
Published: February 2024

The constant advancement of Information and Communication Technologies (ICT) has sparked growing interest across various domains, with education being one of the most significant. However, this digital transformation presents significant challenges for organizations and educational institutions that must adapt to rapid technological advances. This study aims to integrate smart technologies such as the Internet of Things (IoT), artificial intelligence, and cloud computing into current online learning platforms. To address these challenges, we propose a new model for a smart learning environment (SLE-Model) and a comprehensive architecture based on IoT is suggested as the implementation of our smart learning model. Furthermore, this study proposes a practical application of this concept in the form of "Smart Evaluation," a specific microservice integrated into e-learning platforms. This module includes two important progressive elements: Online Exam Management and Automated Correction of Exam Papers. Finally, we substantiated our study by conducting a comparative experiment, employing the Mann-Whitney U test, involving two groups of students during their evaluation session. The results indicate statistical significance at a 95% confidence level, leading us to the conclusion that the utilization of IoT technologies in online exam management and automated correction of exam papers has proven more effective than traditional methods.
The Development of e-LKPD with a Culture-Based Integrated Learning Model (MPTBB) to Improve Student Learning Outcomes on Buffer Solution Material
Authors:   The Master Program of Educational Technology at University of Bengkulu, Indonesia, Alexon
Published: February 2024

The aim of this research is to determine the feasibility, responses, and student learning outcomes of e-LKPD (Lembar Kerja Peserta Didik, i.e., Student Worksheets), by using the Culture-Based Integrated Learning Model (MPTBB) on buffer solution material. The research method uses the ADDIE development model which consists of Analysis, Design, Development, Implementation, and Evaluation. The research subjects were determined using purposive sampling with a total of 12 students in Class XI Natural Science 5 (Class XI IPA 5) for small group trials, and 31 students in Class XI IPA 6 for large group trials. The results showed that the developed electronic LKPD was included in the very feasible category with a score of 4.92 on the media aspect and 4.69 on the material aspect. Student responses to the developed LKPD were in the “very good” category with the content quality aspect obtained a score of 4.73; display aspect with a score of 4.70; the usefulness aspect gets a score of 4.70; and on the user aspect a score of 4.75. After using the e-LKPD with a MPTBB in the learning process of buffer solution material, it was found that there was an increase in student learning outcomes with an N-gain score of 0.54 in the medium category. So that this electronic LKPD can be used for learning media on buffer solution material. This e-LKPD is very interesting because it integrates an integrated learning model based on local culture in chemistry learning.
An Online Course Recommender System in e-Learning Using Learners’ Profile and Learning Behavior-Based Mechanism
Authors:   Department of Interactive Design and Game Development, College of Creative Design and Entertainment Technology, Dhurakij Pundit University, Bangkok, Thailand, Charoensuk Wicha
Published: February 2024

The advent of online learning platforms, such as Coursera and Udemy, has facilitated global access to diverse educational opportunities. However, integrating recommender algorithms into these online learning systems presents a notable challenge. To address this challenge, this research paper proposes an architecture for online course recommender systems that leverages learners’ profiles and learning behavior. The proposed architecture comprises six core components: 1) User Management Engine, 2) Online Course Content Management Engine, 3) Learning Behavior Observer and Recorder, 4) Profile and Learning Behavior Builder Engine, 5) Course Recommendation and Filtering Engine, and 6) Feedback Engine. These components collectively form the foundation of the online course recommender system. In order to facilitate practical implementation, a prototype of the online course recommender system has been developed. To evaluate the system’s performance, a comparative analysis was conducted, to compare the personalized recommended list with the non-personalized recommended list. The analysis revealed an average precision of 77.60% for the personalized recommended list, while the non-personalized recommended list achieved an average precision of 65.60%. These findings highlight the superiority of the personalized approach in generating more accurate and relevant online course recommendations.
Pediatric ocular tumors: An overview
Authors: Raj Anuradha , Sahu Pratibha
Published: February 2024

The majority of ocular tumors in children are benign, but specific malignant neoplasms pose a risk to both life and vision. It's indeed crucial for pediatricians to be aware of ocular tumors in children, as early detection and proper management can significantly impact the child's health and vision. As a result, swift recognition and timely referral of patients to an ocular oncologist are imperative for effective clinical management. This article provides an overview of general concepts surrounding ocular tumors in the pediatric age group, offering brief insights into the clinical features and management of significant tumors affecting the eyelids, conjunctiva, intraocular structures, and orbit.
Aptamers based targeted drug delivery system: A newer trend in cancer treatment therapy
Authors: Dey Paramita , Ghosh Anushmita , Sarker Subhrajit
Published: February 2024

The investigation of targeted drug delivery systems as a way to improve therapeutic efficacy while minimizing adverse effects is a result of the development of novel cancer treatment strategies. This subject explores the exciting field of aptamer-based targeted drug delivery systems for the treatment of cancer. Short single-stranded DNA or RNA molecules called aptamers have a remarkable capacity to bind to particular target molecules with high specificity and affinity. Aptamers have drawn attention as excellent possibilities for creating targeted drug delivery systems by taking use of their special characteristic. The applications, choice, and modification of aptamers to precisely identify cancer-associated biomarkers, such as receptors overexpressed on cancer cells, are covered in detail in this topic. Additionally, it emphasizes various techniques for aptamer-drug conjugation optimization which ensure effective carrier delivery and regulated drug release inside the tumor microenvironment. It is investigated if aptamer-based systems have the ability to overcome problems such drug resistance, heterogeneity, and insufficient drug penetration within solid tumors.

In conclusion, this article illuminates how aptamer-based targeted drug delivery systems have transformed the world of cancer treatment. It advances knowledge of these systems and their potential to transform cancer treatment by providing insights into design principles, delivery systems, and therapeutic results.
Bio-markers of immuno-oncology
Authors: Patel Tulsi Dipakbhai , Gunjan  , Vanteddu Venkata Gangadhar
Published: February 2024

Since its inception until the rapid advancements, the immuno-oncology (I-O) landscape has undergone significant modifications. Thousands of possible I-O medicines and therapy combinations are being tested in clinical trials as part of the current drug development pipeline. Suppose these assets are to be developed effectively and successfully. In that case, it is necessary to invest in and use the proper techniques and technology to speed up the transition from preclinical evaluation to clinical development. These tools, which include suitable preclinical models, pharmacodynamics-related biomarkers, prediction and monitoring capabilities, and developing clinical trial designs, enable quick and effective evaluation during the development process.

The possibility of new findings and insights in each of these three areas to further address the clinical care needs of patients with cancer.

These tools include. 1. Appropriate preclinical models, 2. Biomarkers of pharmacodynamics, predictive and monitoring utility, and. 3. Evolving clinical trial designs allow rapid and efficient evaluation during the development process.

This article provides an overview of how novel discoveries and insights into each of these three areas have the potential further to address the clinical management needs of patients with cancer.
Measuring Personality Development in the Aftermath of Critical Life Events: A Preliminary Longitudinal Mixed Methods Study
Authors: Kaźmierczak Izabela
Published: February 2024

This article aims to conceptualize, operationalize, and empirically validate the concept of actual personality development in the aftermath of a Critical Life Event. Two qualitative tools have been elaborated: the Structured Critical Life Events Interview and the Coding System for Personality Development. They were empirically verified in a preliminary longitudinal mixed methods study (N = 40 participants, n = 1440 narratives) with three measurements in one year referring to the Transition Cycle (Hopson & Adams, 1976). For assessing reliability the Intraclass Correlation Co­efficient (ICC) and Cronbach’s α were assessed. The convergent validity of the tools was deter­mined by correlating the results with (1) linguistic structure of participants’ verbalizations and (2) the questionnaires measuring similar behaviours and features. The research showed good psycho­metric properties of the tools. Moreover, they better identified personality growth and the specific dynamics of personality changes (positive and negative) than the Post-traumatic Growth Inventory (Tedeschi & Calhoun, 1996).
Understanding Diaspora Pasifika (Sāmoan and Tongan) Intergenerational Sense-Making and Meaning-Making through Imageries
Authors: Faleolo Ruth , Faleolo Sh’Kinah Tuia‘ana Nauna , Faleolo Lydiah Malia-Lose
Published: February 2024

This article presents imagery representative of Pasifika (Sāmoan and Tongan) diaspora (nofo ‘i fafo o Sāmoa/ tu‘a Tonga) intergenerational sense-making and meaning-making. The main author, Ruth (Lute) Faleolo, presents a selection of eleven photographs shared with her by Pasifika knowledge holders across Aotearoa (New Zealand), Australia, and the United States, alongside six personally photographed people/events in Aotearoa. Collectively, these images show important Pasifika meaning-making and sense-making processes that are occurring intergenerationally in tu‘a Tonga/ nofo ‘i fafo o Sāmoa. These selected images were collected as part of an ongoing larger study of Pasifika migration and mobilities (2013-2023). The second author, Sh’Kinah Tuia‘ana Nauna Faleolo, presents pieces from her art collection (2015): Two Woven Identities and discusses her meaning-making and Indigeneity enfolding these pieces while growing up in Aotearoa. The third author, Lydiah Malia-Lose Faleolo, presents her Identity artwork (2019) and Duality design pieces (2023) that demonstrate her current and continued Indigeneity as a Sāmoan Tongan woman, living and studying in Australia. The fourth author, Nehemiah Thomas Faleolo’s artistic expressions captured in his annotated sketches and sculpture work were selected from a collection he had created in Australia. Nehemiah’s respected artwork and meaning-making, carefully documented by him in 2020 was (posthumously) selected by Faleolo family members, from his private exhibition and collection (Brisbane). Scanned documents and photographs stored on his mobile device have been contributed to this article on his behalf, with permission.
For many Pasifika living in Aotearoa, Australia and the United States, the processes of intergenerational sense-making and meaning-making occur in the diaspora contexts of faith, family, community, and education. The imageries presented by Ruth (Lute) Faleolo follow these thematic contexts, with short analyses about the intergenerational sense-making and meaning-making observed per photo. The purpose of her contribution to the discussion is to promote imageries as a way of conveying Pasifika understandings and knowledge. Sh’Kinah Tuia‘ana Nauna Faleolo, Lydiah Malia-Lose and Nehemiah Thomas Faleolo’s contributions present personal accounts of intergenerational sense-making and meaning-making as experienced through their artistic expressions, within nofo ‘i fafo o Sāmoa/ tu‘a Tonga contexts of Aotearoa and Australia.
Sacred Vā-Rhythms
Authors: Fa'avae David Taufui Mikato
Published: February 2024

This book review is a talanoa (discussion) with Winston Halapua’s 2008 text, Waves of God’s Embrace: Sacred Perspectives from the Ocean. This review is an interpretation and evaluation of the text and Halapua’s narrative musings. Readers are invited to engage with Indigenous concepts and forms of creative criticality, fronting Oceania meaning-making and sense-making through storytelling, poetry, and proverbial or wise sayings. In my review, I employ sacred vā-rhythms to engage in talanoa with key themes, ideas, and insights noted by Halapua, a well-respected religious leader and academic. I offer questions and provocations about God’s embrace and the ways in which sacred vā is framed today as being in-relationship with the more-than-human world (i.e., the fonua-vanua-whenua and moana) for Tongan as well as Oceania families across Oceania and the diaspora.
The factors influencing stress among nursing home staff: A cross-sectional study to develop stress measurement scale
Authors: Yasin Nurul Hafizah Mohd , Hasbollah Hasif Rafidee , Saidi Normaizatul Akma , Simpong Derweanna Bah , Razak Razli Che , Guan Tan Tse
Published: February 2024

This study aims to identify factors influencing job stress among nursing home staff in Malaysia. Understanding the job stress among nursing home staff is crucial to improving the quality of health care provided by staff in nursing homes. Despite studies of sources and levels of stress among nursing home professionals, effective ways to eliminate stressors among the nursing home staff in Malaysia are still under research. The role of social support as a mediator in the relationship between time pressure, role conflict, workload, job autonomy, and job stress in a nursing home was also examined to extend the underpinning theory. This study used a cross-sectional survey to collect data from the respondents to meet the research objective. The Smart Partial Least Squares (PLS) software tests the research model's hypotheses. The probability technique using cluster random sampling was employed to gather data for this study, which included 150 nursing home staff in Malaysia. The reliability and validity metrics were first assessed for the scale development process to guarantee internal consistency. The result revealed that the reliability and validity of each item used were established for the Nursing Home Staff Stress Measurement Scale. This study has indicated that time pressure and role conflict negatively influence social support. Job autonomy positively influenced job stress, while social support negatively influenced job stress.
Contratación, administración o uso exclusivo sobre bienes en copropiedad y tutela jurídica de los copropietarios excluidos. Redescubriendo la gestión de negocios ajenos (negotiorum gestio)
Authors: León Hilario Leysser
Published: February 2024

En el Código Civil peruano el uso exclusivo de un bien copropiedad, con exclusión de los demás copropietarios, es sancionado con la obligación de pagar a los excluidos una indemnización proporcional. Determinar la naturaleza de esa indemnización proporcional, revelar su fundamento, y su interacción con los derechos y las obligaciones que surgen de la gestión de negocios ajenos (negotiorum gestio), con el método histórico-comparativo, es fundamental para resolver problemas cruciales de aplicación, como el de su cuantificación, con criterios no solo punitivos, sino, sobre todo, de justicia correctiva, y no solo punitivos.
Las formalidades convencionales en la contratación moderna. La cláusula de no modificación oral o “no oral modification clause” y la doctrina de los actos propios como límite a su eficacia
Authors: Momberg Uribe Rodrigo , Severin Fuster Gonzalo
Published: February 2024

Si bien el principio del consensualismo sigue rigiendo como regla general en la contratación moderna, es habitual que se incluyan, especialmente en contratos comerciales complejos y de larga duración, cláusulas que limiten la libertad de las partes para modificarlos o terminarlos, a menos que se observen ciertas formalidades. En este contexto, el presente trabajo analiza las denominadas “cláusulas de no modificación oral”, planteando los argumentos para aceptar su exigibilidad, como asimismo sus límites, por medio de la aplicación de la doctrina de los actos propios.
La regla de la previsibilidad de los daños al tiempo de contratar como elemento distintivo de la responsabilidad por incumplimiento contractual en el Derecho peruano
Authors: Ugarte Mostajo Daniel
Published: February 2024

La regla de la previsibilidad de los daños al tiempo de contratar constituye un límite del quantum respondeatur que no ha sido bien comprendido por la doctrina nacional, la cual –desde una aproximación unificadora a la responsabilidad civil– ha llegado a cuestionar su utilidad y su coherencia con el principio de reparación integral. En este trabajo se cuestiona dicha aproximación y se plantea, a partir de una revisión de Derecho comparado, una concepción renovadora de la regla que permita entenderla como el elemento distintivo de la responsabilidad por incumplimiento contractual en el Derecho peruano y como el criterio por excelencia de “imputación objetiva” de los daños en dicha sede.
Information System in Forensic Dental Medicine
Authors: Valente Ana Filipa , Borges Gil , Balhé Joana , Branquinho Maria , da Silva Paulo
Published: February 2024

A Medicina Dentária Forense integra o grupo das Ciências Forenses, tendo por objetivos principais a observação e avaliação técnico-científica da cavidade oral e dentes, com vista à obtenção de prova pericial em situações de relevância judicial. Desempenha um papel importantíssimo na identificação humana, quando não é possível por outros meios, por desfiguração, decomposição, carbonização ou nas grandes catástrofes, com elevado número de vítimas a identificar. Os dentes são as estruturas mais estáveis, resistentes e duráveis do organismo, mantendo as suas propriedades e características. Existem diversos métodos de análise neste âmbito, como a análise dentária comparativa, que recorre a registos ante mortem, comparando-os com os registos post mortem obtidos, nomeadamente peças dentárias, tecidos envolventes e demais particularidades como tratamentos restauradores ou anomalias. Um Sistema de Informação aplicado à Medicina Dentária Forense, poderá ser vantajoso, tornando o processo mais célere, eficaz e seguro, através da integração, melhor acessibilidade e partilha da informação.
Ensemble Methods for Consumer Price Inflation Forecasting
Authors: Bravo Jorge , Ashofteh Afshin
Published: February 2024

Inflation forecasting is one of the central issues in micro and macroeconomics. Standard forecasting methods tend to follow a "winner-take-all" approach by which, for each time series, a single believed to be the best method is chosen from a pool of competing models. This paper investigates the predictive accuracy of a metalearning strategy called Arbitrated Dynamic Ensemble (ADE) in inflation forecasting using United States data. The findings show that: i) the SARIMA model exhibits the best average rank relative to ADE and competing state-of-the-art model combination and metalearning methods; ii) the ADE methodology presents a better average rank compared to widely used model combination approaches, including the original Arbitrating approach, Stacking, Simple averaging, Fixed Share, or weighted adaptive combination of experts; iii) the ADE approach benefits from combining the base-learners as opposed to selecting the best forecasting model or using all experts; iv) the method is sensitive to the aggregation (weighting) mechanism.