bluuebunny/crossref_metadata_2025 huggingface dataset:
„Wir investieren zunehmend auch außerhalb Chinas“
Authors: Müller-Wondorf Rolf
Published: April 2024

60 Jahre alt – und kein bisschen müde. Im Gegenteil: Bis 2025 will Leuze seinen Umsatz im Vergleich zu 2022 verdoppeln, haben die Verantwortlichen jetzt während einer Pressekonferenz am Unternehmenssitz Owen noch einmal bestätigt. Eine anspruchsvolle Zielsetzung in einem krisengeprägten Umfeld.
Der Weg zur Operational Excellence in der Supply Chain
Authors:   Vogl. Hubert
Published: April 2024

In dieser Beitragsserie wird in vier aufeinander aufbauenden Artikeln ein umfassender Überblick über die Möglichkeiten, Chancen und Grenzen des Lean-Six-Sigma-Ansatzes (LSS) im Supply Chain Management (SCM) vermittelt. In diesem ersten Beitrag erfahren Sie, welche Optimierungspotenziale SCM für alle beteiligten Akteure bereithält, wie Lean Management die Implementierung des SCM erfolgreich unterstützen kann, wie Six Sigma den Verbesserungsprozess in der SC strukturiert vorantreibt, welche Wechselwirkungen zwischen Lean und Six Sigma sich positiv auf die SC auswirken und was bei einer LSS-Einführung im SCM zwingend zu beachten ist.
Projekt WindGiski
Authors: Fichter Carsten , Peters-Erjawetz Sandra , Uhlenwinkel Nele
Published: April 2024

Der Ausbau der Windenergie in Deutschland stockt. Die Gründe dafür sind vielfältig. Es ist notwendig, neue Windenergieflächen zu identifizieren, um die Klimaziele zu erreichen. Ziel des interdisziplinären Projekts „WindGiski“ ist es, Informationen für potenzielle Windenergieflächen mithilfe von Künstlicher Intelligenz zentral in einem Geoinformationssystem darzustellen.
Energiemanagement als Lebensversicherung für das Stromnetz
Authors: Schlichting Frank
Published: April 2024

Einerseits steigt im Zuge der Elektrifizierung der Sektoren der Strombedarf, andererseits sollen erneuerbare Energien möglichst schnell ausgebaut werden – sind aber nicht immer konstant verfügbar. Wie können wir unter diesen herausfordernden Umständen eine Überlastung des Stromnetzes dennoch vermeiden und die Versorgungssicherheit gewährleisten? Durch smartes Energiemanagement in Kombination mit dynamischen Netzentgelten und flexiblen Strompreisen.
Volatile Kapazitäten erfordern flexible Abnehmer
Authors: Piecuch Miriam , Rabe Jan
Published: April 2024

Im Rahmen der Energiewende muss der durch E-Mobilität und Wärmepumpen steigende Strombedarf zunehmend aus Energiequellen wie Wind und Sonne gedeckt werden. Deren Erzeugungskapazitäten schwanken allerdings. Daher stellt sich die Frage, welche trag- und konsensfähigen Ansätze existieren, um den künftig steigenden Strombedarf zuverlässig zu decken und besser mit den volatil vorhandenen Stromkapazitäten in Einklang zu bringen. Das Ziel dabei ist, das Stromnetz stabil zu halten und Überlastungen zu vermeiden.
Green Mobility
Authors: Chadha Amit
Published: April 2024

Die Welt verändert sich. Um die Bedrohung durch den Klimawandel abzuwenden, ist eine umfassende Transformation hin zu einer nachhaltigen Lebensweise erforderlich. Trotz des globalen Temperaturanstiegs und zunehmend unvorhersehbarer Wetterereignisse könnte das Erreichen von Netto-Null-Emissionen bis 2050 noch immer dazu beitragen, irreversible Schäden für unsere Umwelt zu verhindern.
Externer Support und Aufbau einer Sicherheitskultur
Authors: Axnick Heino
Published: April 2024

An qualifizierten Fachkräften fehlt es überall im Land – so auch in der Windenergiebranche. Durch fehlendes Personal kommt es zu Verzögerungen, Windenergieanlagen können nicht rechtzeitig in Betrieb genommen werden. Das bremst die Windenergieprojekte und damit die Transformation des Energiesystems. Gleichzeitig erzeugt es höhere Kosten. Doch es gibt wirkungsvolle Lösungsansätze.
Stromsensoren der nächsten Generation
Authors: Riegel Georg
Published: April 2024

Die Strom-Einsparpotenziale über alle Branchen hinweg sind riesig, werden aber noch zu selten ausgeschöpft. Um sie zu heben, sind meist keine hohen Investitionen nötig. Denn eine solide Datengrundlage und gute Software ermöglichen ein genaues Hinschauen und zielführendes Agieren. Die erforderlichen Daten können zum Beispiel smarte IoT-Stromsensoren der neuesten Generation einfach, schnell und wartungsfrei liefern, wie das Beispiel eines energieautarken LoRaWAN-Stromsensors der deZem GmbH zeigt.
Preliminares e índice Saluta 9
Authors: Nieto Arturo
Published: April 2024

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ENVIRONMENTAL ACCOUNTING AND TAXATION AND PERFORMANCE OF MANUFACTURING COMPANIES IN NIGERIA (2014 - 2022)
Authors: FAKAYODE  , PAUL OPEOLUWA , OLAYEMI  , OLAMIDE OLUSEYANU
Published: April 2024

The argument from different quarters is premised on the fact that environmental accounting and taxation could lead to increased expenses for the companies or collapse of the companies due to higher production costs. This study therefore examined the effect of environmental accounting and taxation on the performance of manufacturing in Nigeria. Purposive sampling techniques were used to select fifteen companies from the manufacturing sector. An ex-post facto research design was employed. Secondary data used for the study was extracted from the financial reports of the selected companies. Variables used included Return on Assets (ROA) Sales Growth (SG) Environmental Costs (EC), and Environmental Liabilities (EL). Content analysis and multiple regression were used to analyze the data collected. The findings of the study revealed EC (0.0391597, p=0.017<0.05) and EL (0.0291861, p=0.033<0.05) have a positive and significant effect on the ROA of companies. Further results showed that EC ( - 0.032978, p= 0.598>0.05) and EL (-0.0277371, p=0.595>0.05) have negative and insignificant effects on the growth of companies. The study recommended that environmental accounting and taxation should be made an important inclusion in the financial reports of companies to ensure that companies engage in production activities that will not have adverse effects on the environment.
A SEMANTIC ANALYSIS OF SELECTED PETER OBI’S POLITICAL CAMPAIGN TWEETS AND READERS’ COMMENTS
Authors: AKANDE PETER ADEWALE , ADELEKE OLUSOLA FESTUS , ADIO AJAO RASHEED , AMUSA AKEEM KOLAWOLE
Published: April 2024

The purpose of this study was to analyse the semantic characteristics of Peter Obi's political campaign tweets and comments on Twitter. This study is based on the semantic analysis theoretical framework. This study used a mixed method research design, focusing on Peter Obi's political campaign tweets and readers' comments on Twitter. Data collection involves retrieving tweets and extracting comments via Twitter's API or third-party tools. Data analysis includes rule-based methods, machine learning algorithms, or pre-trained models. A purposive random selection technique is adopted due to impracticality and space constraints. The study explores the themes in Peter Obi’s tweets, focusing on political reformation, ethnicity, and youth development. Obi addresses the political consequences of bad governance and emphasises the need for good governance. He uses ethnicity as a metaphor for national rebirth and progress, recognizing Nigeria’s multi-tribal nature. This research reveals key insights into the communication strategies used and the public's response. Through the analysis of language, sentiment, and themes, it becomes evident that Obi's tweets aimed to convey specific policy points while fostering a positive emotional connection with the audience. Reader comments reflect varying degrees of support, skepticism, and engagement with his message. This analysis sheds light on the effectiveness of his online campaign in conveying his political agenda and elicitingpublic reactions. By continually studying and analysing political discourse on social media from a semantic perspective, we can deepen our understanding of the complex interplay between language and persuasion in the realm of politics.
The Implementation of Make a Match Method Using the Jakarta Post to Improve Students’ Reading Skills
Authors: Ratri Nanda Lintang , Widya Lestari Maria Yosephin , Nur'aini Siti
Published: April 2024

The main objectives of the study are 1) to find out students reading mastery before being taught by applying Make a Match using The Jakarta Post in the learning process. 2) to find out students reading mastery after being taught by applying Make a Match using The Jakarta Post in the learning process. 3) to find out the differences between the students reading mastery taught by applying by Make a Match and without applying Make a Match using The Jakarta Post in the learning process. In this case, the researcher adopted Quantitative Research. This study took data sources of 72 students from class X Man 1 students in Semarang. Then the researcher made an instrument by making double choice questions as a pre-test and post-test to assess students' reading progress after being taught Make a match as a method and applied to the text in the form of Jakarta post. The result of pre-test mean of both classes is 66.25 for experiment class and 61.39 for control class. And the result of post-test mean of both classes is 85.97 for experimental and 74.03 for control class. Those result were formulated with t-test formula. The test score showed that t-test > t-table. The t-test is obtained 1.935 for 5 percent (0.05) alpha level of significant. The percentage of t-table 5% is -2,021. The computation shows that 1,935 > -2,021. The conclusion of this study is to improve students’ reading by applying Make a Match using The Jakarta Post is recommended and effective.
Analysis of Phrases Based on their Forming Elements in the Film Langit Tak Selamanya Abu-Abu by Kemendikbud RI
Authors: Marshanda Tirza , Hidayatul Alina , Rindu Jihanita , Jannah Miftahul , Oxana Oktian , Pratama Rakha , Aisy Rihada , Salamah Siti , Rumboy Yuliva , Suhita Raheni
Published: April 2024

The purpose of this study is to analyze the film "Langit Tak Selamanya Abu-Abu " based on its constituent elements on the sentence structure contained in the film's dialogue. This type and approach of research is qualitative/library research. The research data in this study is a phrase based on its constituent elements, while the source of the data is the film Langit Tak Forever Abu Karya Kemendikbud RI. Data collection techniques using documentation and data analysis techniques using content analysis The results of the study showed, in every dialogue delivered by the characters in the film " Langit Tak Selamanya Abu-Abu " which has a duration of 8 minutes 31 seconds, an analysis of Phrases based on their Constituent Elements can be found, namely 1) Endocentric Phrases, namely phrases that have distribution similarities with their constituent elements, in the film contains only 1 endocentric phrase, namely Attributive Endocentric Phrases, 2) Exocentric Phrases, which are phrases that have no distribution equation with other elements, in the film there are 2 exocentric phrases, namely Prepositional and Conjunctional Exocentric Phrases. Based on the results of the study, it can be concluded that the analysis of phrases in the film " Langit Tak Selamanya Abu-Abu " based on its constituent elements, namely, found 8 data with a total of 48 phrases, with 30 attributive endocentric phrases, 15 conjunctional exocentric phrases, and 3 prepositional exocentric phrases.
HUBUNGAN PEMBERIAN MP-ASI DENGAN STATUS GIZI BAYI 6-11 BULAN DI WILAYAH KERJA PUSKESMAS SAMBAU KOTA BATAM
Authors: Ibrahim Ibrahim , Isramilda Isramilda , Permatasari Siska Dwi
Published: April 2024

Background: the nutritional status of infants greatly influences their growth and development. To find out the nutritional status of infants can be seen from what they consume. Babies aged 6-11 months get nutrition from MP-ASI and ASI. The purpose of this study was to determine the relationship between complementary feeding and nutritional status at the Sambau Health Center. Method: Type of quantitative research with a cross-sectional study design. This research was conducted in December 2022. The population was infants aged 6-11 months who attended Posyandu activities in December as many as 69 people were taken using the total sampling technique. Data on MP-ASI administration, frequency, and form of MP-ASI were obtained using a questionnaire and measuring weight/PB. The data were analyzed using the chi-square test. Results: Giving MP-ASI to infants 6-11 months was 63.8%. The frequency of giving MP-ASI was mostly according to age, namely 75.4%. Most of the MP-ASI forms are age-appropriate, namely 76.8%. The nutritional status of infants aged 6-11 months is mostly good, namely 92.8%. The results of the chi-square test obtained a p-value of 0.856 for the relationship between MP-ASI and nutritional status, and the relationship between MP-ASI frequency and nutritional status obtained a p-value of 0.003. Meanwhile, the relationship between complementary feeding and nutritional status obtained a p-value of 0.861. Conclusion: There is no significant relationship between the provision of MP-ASI and the nutritional status of infants 6-11 months at the Sambau Health Center with a value of p=0.586 (p>0.05).
Neuroeducación y Medicina Conductual: Herramientas Indispensables para mejorar la Calidad de Vida en Hospitales y en Casa
Authors: Leonardo Alejandro Peñuela Velásquez  , Mendoza Múzquiz Pedro Luís , Martínez Saldaña Dionicio Enrique , Parra Bolaños Nicolás
Published: April 2024

Se hace un repaso por los principales aspectos históricos y técnicos sobre dos importantes disciplinas científicas: la medicina conductual y la neuroeducación aplicadas al mejoramiento de la calidad de vida de los pacientes en entornos hospitalarios y clínicos, pues se considera que son dos campos que tienen muchas herramientas para aportar significativamente a los procesos de recuperación de personas que requieren amplios seguimientos y acompañamientos para que desde sus sistemas de autocontrol y autorregulación puedan llevar a cabo, programas mucho más efectivos para tener una disciplina con su salud física, emocional y psicológica. La ejecución de este estudio, se enfocó en hacer una lectura detallada y a profundidad de los principales logros y hallazgos realizados por la neuroeducación y la medicina conductual con pacientes con todo tipo de patologías y cuadros diagnósticos de alta complejidad. Como conclusiones se ha encontrado que, estas dos disciplinas tienen una amplia experiencia desde hace más de 40 años para contribuir con ayudar a pacientes que requieren programas de reforzamiento y apoyo psicoemocional en el hogar para hacer que las recomendaciones y sugerencias de los médicos especialistas puedan ejecutarse a cabalidad, llegando a evidenciarse que, cuando no se cuenta con el respaldo de alguna de estas disciplinas, los procesos de recuperación en la calidad de vida de los pacientes, tiende a ralentizarse y decaer progresivamente.
Incidencia de Leishmaniasis Cutánea en la Región Huetar Atlántica de Costa Rica durante el año 2023
Authors: Badilla Ramírez Yanán , Mateus Vargas Ana Lucía
Published: April 2024

La leishmaniasis es una enfermedades zoonótica y de trasmisión vectorial con complejo ciclo de transmisión donde se involucra gran diversidad de parásitos, reservorios y vectores. Es una infección causada por diferentes especies de protozoos del género Leishmania. Se encuentra dentro de las diez principales enfermedades tropicales desatendidas. Se estima que el 85% de los casos de leishmaniasis cutánea ocurre en Brasil, Colombia y Perú, pero es endémica en 14 países, entre ellos Costa Rica. Existen tres presentaciones clínicas asociadas: cutánea, mucosa o mucocutánea y visceral, siendo la cutánea la forma más frecuente. El método más ampliamente utilizado para el diagnóstico es el método directo, donde se realiza una visualización microscópica del amastigoto a partir de la muestra obtenida de la úlcera del paciente. Durante el año 2023, los tres cantones con la mayor incidencia en la región fueron Talamanca, seguido por Limón y, por último, Siquirres. Los datos epidemiológicos obtenidos en otros estudios y en este reporte, revelan que la leishmaniasis cutánea representa un problema de salud pública en Costa Rica. El presente artículo tiene como propósito dar a conocer las tasas de incidencia de leishmaniasis cutánea, una infección parasitaria que se caracteriza por ser prevalente en la región. Mediante datos epidemiológicos se busca orientar a los profesionales de salud y tomadores de decisión para la interrupción en la cadena de transmisión de la enfermedad.
Revisión Sistemática en Niños con Trastorno de Déficit de Atención con Hiperactividad en Comprensión Lectora
Authors: Ramos Puca Sandy Gabriela
Published: April 2024

La investigación realizada se centró en llevar a cabo una revisión sistemática de la literatura, explorando diversas bases de datos académicas para analizar la relación entre el trastorno por déficit de atención e hiperactividad (TDAH) en niños y su comprensión lectora. Los hallazgos revelaron que el TDAH tiene un impacto significativo en las dificultades de comprensión lectora. La metodología empleada se basó en la revisión sistemática de literatura científica. Como resultado de este estudio, se concluyó que las dificultades en la comprensión lectora de niños con TDAH están relacionadas con problemas sintácticos, retención de ideas y oraciones. Además, se identificó que las causas de estas dificultades son de naturaleza multifactorial, involucrando factores cognitivos y conductuales. Finalmente, se observó que España, Estados Unidos y Colombia son los países con mayor cantidad de investigaciones sobre la comprensión lectora en niños con TDAH.
Análisis del Discurso Narrativo y Estético de una Pieza de Motion Graphics desde sus Componentes
Authors: Carpio Padilla Patricio Ismael
Published: April 2024

Este artículo busca entender cómo en una pieza de motion graphics se integra el discurso narrativo y estético, y describir los componentes del motion graphics como el movimiento, imagen, sonido, tipografía y su participación desde la perspectiva de varios autores y cómo se construyen dentro de cada uno de los discursos. Desde el discurso narrativo como la construcción de su estructura y sus unidades expresivas para configurar todo el espacio narrativo con un sentido y valor a la pieza. Y el discurso estético desde el uso de los signos verbales, visuales y sonoros participando de manera íntegra en una composición, que van en constante sinergia con el propósito comunicativo de la pieza a través de sus componentes. En este sentido, estos discursos aportan a un adecuado uso del mensaje comunicacional de la pieza de motion graphics para lograr empatizar con el espectador que pueden integrarse con recursos expresivos como la metáfora y la retórica.
Roles of microglial calcium channels in neurodegenerative diseases
Authors: Wang Shasha , Zhang Jinyu , Zhang Jingdan , Li Ao , Yuan Zengqiang , Cheng Jinbo
Published: April 2024

Microglia are crucial for neurodevelopment, and the maintenance of central nervous system functions. Calcium signals in microglia regulate the neuronal plasticity critical for learning, memory, and neuron survival. Growing evidence highlights the pivotal function of calcium channels in microglia, along with their cognate proteins, in modulating oxidative stress, neuroinflammation, and multiple neurodegenerative diseases such as Alzheimer’s disease and Parkinson’s disease. In this review, we summarized the important role and regulatory mechanism of these critical calcium channels and their associated proteins, highlighting their potential as novel therapeutic targets for neurodegenerative diseases.
ІСТОРІОГРАФІЯ РОЗВИТКУ ІННОВАЦІЙНИХ ТЕХНОЛОГІЙ НАВЧАННЯ В УКРАЇНІ (90-ТІ РОКИ ХХ – ПОЧАТОК ХХІ СТОЛІТТЯ)
Authors: Кохановська О.В.
Published: April 2024

У статті проаналізовано історіографію розвитку інноваційних технологій навчання в Україні у 90-ті роки ХХ – на початку ХХІ століття. Визначено, що дефініція «інноваційні технології» пов’язана з двома взаємопов’язаними категоріями «інновація» та «технології» і не має єдиного визначення. Аналіз інноваційних процесів в освіті доводить, що їх розвиток у 90-ті роки ХХ – на початку ХХІ століття відбувався поетапно. Історіографічний аналіз досліджуваного явища дозволив його розвиток умовно розділити на три взаємопов’язані періоди: 1991–2000 рр. – реформаційно-теоретизаційний; 2000–2010 рр. – диверсифікаційний; 2011–2023 рр. – систематизаційний. В межах кожного з виокремлених періодів визначено вектори розвитку досліджуваного явища, а також висвітлення його в нормативно-правових актах, дисертаційних дослідженнях, на шпальтах періодичних видань, конференціях тощо. Зроблено висновок, що 90-ті роки ХХ – початок ХХІ століття у педагогіці характеризувався величезною кількістю нововведень, які прагнули трансформувати існуючу систему освіти. Акцентовано, що все, що відбувалося в освіті в цей період носило спонтанний характер, проте багато вчених, педагогів-практиків проваджували у свою діяльність нові підходи, що призводило до модернізації окремих елементів системи як такої. Тому інноваційні перетворення в Україні на початку 90-х років ХХ століття мали переважно локальний характер. Система освіти на цьому етапі потребувала аналізу інноваційних ситуацій, розробки методології та оцінки нововведень, формування рекомендацій щодо державної політики в галузі інновацій. Наголошено, що це й було зроблено на початку ХХІ століття шляхом зокрема прийняття окремого Закону України «Про інноваційну діяльність». Різноманітні інноваційні технології стали предметом науково-педагогічних досліджень, а педагогічні інновації стали розглядатися як домінуючі в освітній політиці.
A Study on Simultaneous Measurement of Partial Discharge in Epoxy Resin Insulator using IMC and Rogowski Coil
Authors: Norfadilah Rosle  , Mohamad Nur Khairul Hafizi Rohani  , Wan Nurul Auni Wan Mohammad  , Nor Asiah Muhamad  , Mohamad Kamarol Mohd Jamil
Published: April 2024

In practice, field measurement of partial discharge is easily suffered by interferences due to the noisy signal has been mixed with the resulting partial discharge signal. Therefore, the detection and measurement of PD are important to monitor the insulation life in high voltage (HV) power equipment. The paper presents the simultaneous measurement of partial discharge (PD) pulse parameters using the impedance matching circuit and the Rogowski coil sensor to study the features of partial discharge on the epoxy resin insulator. Two different thicknesses of samples were used to observe the PD pulse parameters with the voltage applied vary depending on the thickness of the sample to attain constant electric field intensity for both samples. The step response parameters resulted from the measurement can be used as a time domain features to discriminate various types of PD in HV power equipment. Thus, the PD can be observed clearly, maintenance can be performed, and the performance of the power system can be improved.
General Fuzzy Switchboard Transformation Semigroup
Authors: Nur Ain Ebas  , Kavikumar Jacob  , Mohd Saifullah Rusiman  , Muhammad Ammar Shafi
Published: April 2024

Commutative and switching processing are central to computation. However, some problems arise when classical versions do not reflect the true needs of current computer science, whereby they cannot predict the flow of the next input information in the specified output. The Switchboard State Machine is a controller that controls the direct flow of information from one state to another and also plays the main part in communication between the subsystems. If the simple system satisfies the two properties of the switching and commutative state machines, the system is therefore a finite switchboard state machine. The general fuzzy switchboard automation (GFSA) was introduced by incorporating the switchboard into the general fuzzy automation. This paper is intended to introduce the concept of a general fuzzy switchboard transformation semigroup (GFSTS) by combining the GFSA and the transformation semigroup. Some related definitions and properties are established. The example of certain products, such as GFSTS cascade products, has also been studied. General Fuzzy Switchboard Poly-Transformation Semigroup (GFSPS) is also introduced since it fulfils the switchboard state machine properties. Some of the definitions and properties associated with the GFSPS are defined. Applications for general fuzzy switchboard automata, such as washing machines, are also provided.
Sombor Index and Sombor Polynomial of the Noncommuting Graph Associated to Some Finite Groups
Authors: Sanhan Muhammad Salih Khasraw  , Nor Haniza Sarmin  , Nur Idayu Alimon  , Nabilah Najmuddin  , Ghazali Semil@Ismail
Published: April 2024

Sombor index is a newly developed degree-based topological index which involves the degree of the vertex in a simple connected graph. The Sombor index is known as the square root of the sum of the squared degrees of two adjacent vertices in a graph. Meanwhile, the noncommuting graph associated to a group is a graph where its vertices are the non-central elements of the group and two vertices are adjacent if and only if they do not commute. In this study, a new notion called the Sombor polynomial is introduced. Then, the general formula of the Sombor index and the Sombor polynomial of the noncommuting graph associated to some finite groups are determined by using their definitions and some preliminaries. The groups involved in this research are the dihedral groups, the quasidihedral groups, and the generalized quaternion groups. The results found can help the chemists and biologists to predict the chemical and physical properties of the molecules without involving any laboratory work.
Android-Based Patient Healthcare Tracker with Appointment Booking Capability
Authors: Suhasshini Ramalingam  , Fakrulradzi Idris  , Norlezah Hashim  , Eliyana Ruslan  , Muhammad Syahrir Johal  , Muhamad Firdaus Darus
Published: April 2024

Managing the healthcare system presents various challenges that healthcare professionals must be well-prepared to address. Additionally, in times of pandemics, reducing human contact in crowded locations like clinics becomes crucial. Currently, many clinic departments spend a considerable amount of time manually entering and searching for patient data within their systems. This process is not only time-consuming but also notably ineffective. Hence, the development of a mobile application has become an imperative solution to overcome these issues. This project has been implemented using Android Studio with the primary aim of tracking patient health and efficiently recording patient data. This, enables doctors to effectively monitor their patients. The developed application serves as a two-way communication bridge between patients and healthcare departments. Patients can effortlessly schedule appointments with their doctors for consultations and update their health status through the app. Simultaneously, doctors can conveniently issue prescriptions via the same application. We conducted a survey involving 120 participants, comprising 20 doctors and 100 patients. The results unequivocally demonstrate that the designed application has significantly improved healthcare management and fostered efficient communication between doctors and patients.
Privacy Preserving Image Retrieval Using Multi-Key Random Projection Encryption and Machine Learning Decryption
Authors: Alaa Mahmoud Ibrahim  , Mohmaed Farouk  , Mohamed Waleed Fakhr
Published: April 2024

Homomorphic Encryption (HE), Multiparty Computation (MPC), Differential Privacy (DP) and Random Projection (RP) have been used in privacy preserving computing. The main benefit of the random projection approach is the lighter time and space complexity compared to the other available techniques. However, RP is typically used in a symmetric encryption mode, with one random projection matrix single key, making it vulnerable to attacks. An enhanced multi-key RP approach is proposed in this paper where a set of N random matrices are used as projection keys. Moreover, a randomly chosen one is used for each new query. Machine learning models are trained to perform specific vector operations on the randomly projected vectors and produce another randomly projected results vector. Another machine learning model is trained to decrypt the final result at the user’s side. The proposed system is shown to offer privacy against known plaintext and cipher-only attacks while preserving Euclidean distance calculations accuracy in the randomly projected domain which are demonstrated on the COREL 1K image retrieval task. Results show that the cyphertext space took sixteen times less than the ciphertext done with homomorphic encryption, and the computation of distance using random projection was 8 times faster than homomorphic encryption distance calculation.
Study of the Effects of Five Different Machining Fluids on the Surface Hardness and Corrosion Behaviour of Al6061 Alloy
Authors: Imhade Princess Okokpujie  , Jude Ebieladoh Sinebe  , Lagouge Kwanda Tartibu
Published: April 2024

The effects of various machining fluids on the surface hardness and corrosion behaviour of Al6061 alloy were investigated in this study. The study employed the two-step method to develop the machining fluid containing TiO2 nanoparticles with various percentage concentrations. The corrosion study media consist of soluble oil (sample A1), mineral oil (sample A2), 0.2-g/l-TiO2 nano-mineral machining fluid (sample A3), 0.4-g/l-TiO2 nano-mineral machining fluid (sample A4) and 0.6-g/l-TiO2 nano-mineral machining fluid (sample 5). The corrosion study was carried out with Potentiodynamic corrosion and polarisation resistance techniques. After the corrosion study, the SEM and EDS were employed to investigate the microstructure and elemental composition of the machining fluid effects on the Al6061 alloy, and the Vickers micro-hardness machine was used to test the surface hardness of the normal face region that was exposed to the corrosion study. The results show that the soluble oil has a high corrosion rate, with the list polarisation resistance rate compared to the other machining fluid employed in this study. Furthermore, the 0.6-g/l-TiO2 nano-mineral machining fluid has the lowest corrosion rate of 0.115 (µm/year) and the highest polarisation resistance of 1.543 (MΩ). The study concluded that the 0.6-g/l-TiO2 nano-mineral machining fluid is viable for the machining process.
The Effects of an Aligned Magnetic Field on Nanofluid Flow with Newtonian Heating
Authors: Afifah Ahmad Norani  , Lim Yeou Jiann  , Mohamad Hidayad Ahmad Kamal  , Sharidan Shafie  , Noraihan Afiqah Rawi
Published: April 2024

Magnetic field involvement can influence heat absorption in electrically conducting fluid flow, which is useful in the control of features of final products in industries such as radiation therapy, aeronautics, and MHD generators. Consequently, this study investigates the effect of an aligned magnetic field on nanofluid flow over a stretching sheet with the boundary condition of Newtonian heating. Steady nanofluid flow with copper as chosen nanoparticles and water as conventional base fluid is considered. The problem is governed by a system of nonlinear boundary layer equations with appropriate boundary conditions which are then transformed into non-dimensionless equations using an appropriate similarity transformation. A numerical approach known as Keller-Box method is used to solve the transformed governing equations. The numerical solutions obtained are presented graphically in the form of velocity and temperature profiles for different values of aligned angle of magnetic field, Newtonian heating parameter, Prandtl number and nanoparticles volume fraction. A significant increase in aligned angle results in a decrease in fluid velocity, but an increase in temperature profile of nanofluid flow. The increment in the Newtonian heating parameter as well as the nanoparticle volume fraction also causes the temperature to increase.
Effect of Roll Angle Configurations of a Reverse Delta Type Add-on Device on Wing Tip Vortex Alleviation
Authors: Afaq Altaf  , Mohammed Abdulmalek Mohammed Aldheeb  , Ashraf Ali Omar  , Waqar Asrar
Published: April 2024

An add-on device in the shape of a reverse delta has shown the ability to alleviate wake vortices. The present work studies the interaction of the wing tip vortex and the reverse delta type add-on device vortices. This paper looks at the vortex interactions generated downstream of the wing tip in planes perpendicular to the free stream direction and their dependence on roll angles φ at a mean chord-based Reynolds number of Rec=2.75×105. The study reveals that the add-on device causes a reduction in the tangential velocity V and vorticity of the resultant vortex by up to 44.1% and 59.4%, respectively. Also, it is found that the resultant vortex core radius increased by 305%. The results indicate that the reverse delta type add-on device implants countersign vorticity into the wing tip vortex and modifies its roll-up process.
Numerical Investigation on the Conical Flow of Viscoelastic Fluids
Authors: Ahmed M. Shareef  , Alaa Al-Muslimawi
Published: April 2024

The conical problem represents one of the important problems in the various fields of industrial as the automotive industry and the aerospace industry, due to their great role in controlling the flow of liquids and gases. This article covers a computational investigation of incompressible the Phan–Thien/Tanner shear-thinning viscoelastic fluid flow through a conical converging channel. Here, we select hybrid finite element/finite volume algorithm as a first time to treat such problem. This method consists of the combination of a Taylor-Galerkin/pressure correction finite element method (TGPC-FEM) and a cell-vertex finite volume approach (CV-FEA) to solve the system of partial differential equations that govern the fluid flow. The TGPC-FEM is employed to the momentum and mass conservation models, while the stress constitutive models are treated by finite volume implementation. The findings of current study are concerned with stress response, deformation rate, and pressure drop under variations in Weissenberg number and EPTT parameters. The effect of shear-thinning behaviour with the EPTT representation is also considered.
Analysis of Mesh Resolution Effect to Numerical Result of CFD-ROM: Turbulent Flow in Stationary Parallel Plate
Authors: Candra Damis Widiawaty  , Ahmad Indra Siswantara  , Muhammad Arif Budiyanto  , Mohammad Arif Andira  , Dendy Adanta  , Muhammad Hilman Gumelar Syafe’i  , Tanwir Ahmad Farhan  , Illa Rizianiza
Published: April 2024

Computational fluid dynamics (CFD) is extensively utilized to predict flow behaviour in various industries and applications. The Full Order Model (FOM) is a high-accuracy approach to flow modelling, but it requires significant computational resources due to its high order and thousands of variables. To address this problem, the Reduced Order Model (ROM) was developed. Despite the advancement brought by ROM, there is a notable gap in research concerning the impact of mesh configuration on CFD-ROM results. While the number of modes has been extensively studied for its influence on CFD-ROM, the mesh configuration, a critical aspect of the simulation process, has received relatively limited attention. This study investigates the effect of mesh resolution on numerical results in CFD-ROM concerning turbulent flow within stationary parallel plates. Employing rigorous methods, including Richardson Extrapolation, verification, validation, and error percentage. The results explicitly confirm that mesh resolution directly impacts the numerical results of the velocity field in CFD-ROM. It is found that there is a notable reduction in Convergence Grid Index (CGI) values for different mesh ratios: 6.401% for medium-to-coarse and 2.031% for fine-to-medium ratio. Thus, with the same mode number, mesh resolution selection can enhance the numerical result of the velocity field in CFD-ROM.
Analysis and Prediction of Equivalent Diameter of Air Bubbles Rising in Water
Authors: Gabriel de Carvalho Nascimento  , Roger Matsumoto Moreira  , Felipe Pereira de Moura  , William Alves Tavares  , Thiago Ferreira Bernardes Bento  , Lorena Brandão Calazan  , Milena Silva Andrade  , Beatriz Freitas Rezende
Published: April 2024

The equivalent diameter of rising bubbles in liquids is an important parameter that has been investigated for decades by researchers for different purposes. Bubble diameter plays important role in quantifying oil and gas leaks in subsea leak analysis, since it allows the prediction of the magnitude of leaks in seabed petroleum wells and other structures through images obtained by underwater vehicles at great depths. Most studies available in the literature on the subject focus on investigating air bubbles in water; therefore, they were used as the main guide of the experimental apparatus described in this article. Several tests were conducted with air bubble chain in tap water, whose flow rate ranged from 21.1 mL/min to 234.4 mL/min, whereas the bubble equivalent diameter ranged from 4.1 mm to 8.2 mm. In addition, computational fluid dynamics simulations were carried out for comparison purposes; they were validated as potential tools to help designing an automated subsea gas leakage monitoring system based on image analysis algorithms. The herein proposed model could be both analytically and experimentally validated, based on comparisons to findings reported by other authors. This procedure enabled gathering evidence about the most efficient analytical predictions available in the literature for the herein addressed scenario. The results in the present study are consistent to those recorded in the main related articles.
Trayectorias de apropiación digital para la movilización social en activistas de la comunidad LGBT1
Authors: Velázquez Bañales Luis Daniel
Published: April 2024

Esta investigación tiene como objetivo analizar cómo colectivos de la comunidad LGBT incorporan las tecnologías digitales para la movilización social. El movimiento en México tiene una trayectoria desde los años setenta y sus consignas sociales se han enfocado en denunciar casos de discriminación y violencia derivados de tener una orientación sexual, expresión o identidad de género distinta a la norma heterosexual. Se recurrió a la perspectiva teórica de la apropiación digital para analizar las prácticas digitales de los activistas. La metodología empleada fue de carácter cualitativo y se realizaron nueve entrevistas semiestructuradas a profundidad a activistas para observar cómo se vincula su vida en la movilización social con la incorporación de tecnologías digitales.
Cambio climático, ¿por qué debemos preocuparnos?
Authors: García-Martín Bibian Ximena
Published: April 2024

La ponente comparte su conexión personal con la agricultura y la producción de alimentos al tiempo que aborda los problemas del cambio climático y sus repercusiones en la agricultura. Habla del uso histórico de combustibles fósiles que ha provocado el efecto invernadero y el consiguiente aumento de la temperatura, lo que supone una amenaza para los ecosistemas y las formas de vida. La ponente insiste en la necesidad de una acción colectiva para reducir las emisiones de gases de efecto invernadero y pasar a una economía neutra en carbono de aquí a 2050. También subraya la importancia de adaptarse al cambio climático mediante prácticas sostenibles, métodos agrícolas regenerativos y la conservación de suelos y variedades vegetales específicas. La ponente subraya el papel de los pequeños agricultores y la importancia de los conocimientos tradicionales y las abejas autóctonas en este proceso.
Biodiversidad y Servicios Ecosistémicos en el Café
Authors: Benavides Pablo
Published: April 2024

El conferencista, ingeniero agrónomo y 30 años de experiencia en la industria cafetera, aborda la importancia de la biodiversidad en la caficultura colombiana y los retos que presenta. Destaca el papel de los insectos en la respuesta a las variables climáticas y la necesidad de perseverar en la adaptación a las condiciones climáticas cambiantes. Benavides también discute el impacto de la altitud en la producción de café y la aparición de insectos nativos colombianos como nuevos retos para los caficultores. El ponente destaca la importancia de comprender el flujo circular de conocimientos entre la investigación, la extensión y los agricultores para el cultivo sostenible del café y el papel de los enemigos naturales en el control de las plagas. También aborda el uso de sistemas de alerta temprana, la investigación en curso y la importancia de preservar la diversidad de insectos que visitan las flores del café.
Acciones complementarias de mitigación y adaptación para el cultivo de café
Authors: Canal-Albán Francisco Javier
Published: April 2024

Francisco Canal aborda el papel de diversos actores, como las corporaciones autónomas regionales, las instituciones de investigación, los gremios y los parques, en la lucha contra el cambio climático en Colombia. Destaca la importancia de la educación y la participación, así como la necesidad de reducir las emisiones. El ponente también se refiere al compromiso de Colombia de reducir las emisiones de gases de efecto invernadero y a la importancia de la agricultura, en particular de la producción de café, para alcanzar estos objetivos.
La caficultura y el mercado de carbono: Retos y oportunidades
Authors: Guependo Ilich Giancarlo , Moreno Juan Esteban
Published: April 2024

Los Panelistas analizan la importancia de la Federación Nacional de Cafeteros en la implementación de iniciativas ambientales y el potencial de la industria cafetera dentro de los mercados de carbono. Destacan la importancia de involucrar a todos los colaboradores y de promover los esfuerzos de adaptación y mitigación contra el cambio climático, centrándose en los sistemas agroforestales y en el papel del agua en los proyectos medioambientales.
Distributions of Energy, Luminosity, Duration, and Waiting Times of Gamma-Ray Burst Pulses with Known Redshift Detected by Fermi/GBM
Authors: Maccary R. , Guidorzi C. , Amati L. , Bazzanini L. , Bulla M. , Camisasca A. E. , Ferro L. , Frontera F. , Tsvetkova A.
Published: April 2024

Discovered more than 50 years ago, gamma-ray burst (GRB) prompt emission remains the most puzzling aspect of GRB physics. Its complex and irregular nature should reveal how newborn GRB engines release their energy. In this respect, the possibility that GRB engines could operate as self-organized critical (SOC) systems has been put forward. Here, we present the energy, luminosity, waiting time, and duration distributions of individual pulses of GRBs with known redshift detected by the Fermi Gamma-ray Burst Monitor. This is the first study of this kind in which selection effects are accounted for. The compatibility of our results with the framework of SOC theory is discussed. We found evidence for an intrinsic break in the power-law models that describe the energy and the luminosity distributions.
Resonant Absorption of Magnetohydrodynamic Body Modes under Photospheric Conditions
Authors: Yu D. J.
Published: April 2024

Observations reveal that surface and body modes exist in solar pores under photospheric conditions. While the effects of resonant absorption on photospheric surface modes are well established, its effect on body modes is not known yet. In this paper, we investigate resonant absorption for the body modes under photospheric conditions. We numerically solve the dispersion relation induced by thin boundary approximation and obtain the wave dispersion curves and damping rates of three arbitrarily chosen body modes for sausage and kink waves, respectively. The results show that resonant absorption for the body modes is weaker than for the slow surface modes in both cusp and Alfvén continua. The damping behavior of body modes is similar to slow surface modes while the higher body mode has stronger resonant absorption.
Discovery of Merging Twin Quasars at z = 6.05
Authors: Matsuoka Yoshiki , Izumi Takuma , Onoue Masafusa , Strauss Michael A. , Iwasawa Kazushi , Kashikawa Nobunari , Akiyama Masayuki , Aoki Kentaro , Arita Junya , Imanishi Masatoshi , Ishimoto Rikako , Kawaguchi Toshihiro , Kohno Kotaro , Lee Chien-Hsiu , Nagao Tohru , Silverman John D. , Toba Yoshiki
Published: April 2024

We report the discovery of two quasars at a redshift of z = 6.05 in the process of merging. They were serendipitously discovered from the deep multiband imaging data collected by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey. The quasars, HSC J121503.42−014858.7 (C1) and HSC J121503.55−014859.3 (C2), both have luminous (>1043 erg s−1) Lyα emission with a clear broad component (full width at half maximum >1000 km s−1). The rest-frame ultraviolet (UV) absolute magnitudes are M
1450 = − 23.106 ± 0.017 (C1) and −22.662 ± 0.024 (C2). Our crude estimates of the black hole masses provide

log
(

M

BH

/

M

⊙

)
=
8.1
±
0.3

in both sources. The two quasars are separated by 12 kpc in projected proper distance, bridged by a structure in the rest-UV light suggesting that they are undergoing a merger. This pair is one of the most distant merging quasars reported to date, providing crucial insight into galaxy and black hole build-up in the hierarchical structure formation scenario. A companion paper will present the gas and dust properties captured by Atacama Large Millimeter/submillimeter Array observations, which provide additional evidence for and detailed measurements of the merger, and also demonstrate that the two sources are not gravitationally lensed images of a single quasar.
Biodiversity dataset and atlas of the special area of conservation Montesinho/Nogueira, Portugal
Authors: Garcia Nuno , Campos João , Silva Daniel , Alírio João , Duarte Lia , Arenas-Castro Salvador , Pôças Isabel , Loureiro Armando , Teodoro Ana , Sillero Neftalí
Published: April 2024

The special area of conservation Montesinho/Nogueira (SAC-MN) is a key area for biodiversity conservation in the Iberian Peninsula. Covering an area of approximately 1081 km² in the northeast of Portugal mainland, the SAC-MN is home to a wide range of species, including several endemic and endangered species and priority habitats. Despite its ecological significance and importance for conservation, there is a lack of publicly available biodiversity data, which urges the need to create a comprehensive and up-to-date biodiversity dataset for the SAC-MN.

To bridge the knowledge gap on biodiversity in SAC-MN, we undertook a thorough data collection process, including species occurrence records and conservation status information at regional (Portugal) and European levels, from multiple sources. We collected and compiled this information for five major taxonomic groups (amphibians, birds, flora - vascular plants, mammals and reptiles) in SAC-MN, resulting in a total of 31,871 records with 1,312 documented species. In addition, we developed an easy-to-navigate web-based geographic information system (Web GIS). In this article, we present an in-depth report on the process of compiling and preparing data, as well as the development and design of our Web GIS to increase awareness and enhance understanding of the importance of preserving biodiversity in SAC-MN.