Use In Media Research Articles

Swift heavy ions induced transformations in the structural and magnetic properties of Co/Pt multilayer thin films for magnetic storage applications

The integration of CoPt nanoparticles into an insulating matrix has garnered significant attention in material science, nanotechnology, and electronic engineering, particularly for their potential use in magnetic storage media. Precise control over the size, shape, and ordering of these nanoparticles is crucial. This study investigates the impact of swift heavy ion irradiation (120 MeV Ag+9) with varying ion fluences (1 × 1013 and 3 × 1013 ions/cm2) on the structural and magnetic properties of sputter-deposited Co/Pt multilayer thin films on quartz substrates. X-ray diffraction (XRD) analysis of the pristine samples reveals the presence of an FCC-structured CoPt alloy. In contrast, films irradiated with a fluence of 1 × 1013 ions/cm2 exhibit superlattice peaks (001) and (110), indicative of L10-structured CoPt alloy, whereas films subjected to 3 × 1013 ions/cm2 retain the FCC structure. This suggests that a fluence of 1 × 1013 ions/cm2 promotes ordering, while 3 × 1013 ions/cm2 induces disordering. Selected area electron diffraction (SAED) patterns from TEM confirm these structural transitions, while SQUID magnetometry reveals an increase in coercivity at 1 × 1013 ions/cm2, followed by a reduction at 3 × 1013 ions/cm2, consistent with the observed structural changes. These results demonstrate that carefully controlled ion fluences can effectively tailor the structural and magnetic properties of Co/Pt multilayers, enhancing their suitability for advanced magnetic storage applications.

Development of Learning Video Media in Biology Subjects

The purpose of this study is to produce valid and practical learning video media for use in the learning process. This research is a development research used to produce a product in the form of learning video media. The stages in this development include: planning stage, design stage, and development stage. The subjects in this study were 2 validators consisting of learning media experts and content or learning media material experts, 31 grade XI science students and 1 Biology subject teacher. Data collection techniques used observation, interviews, questionnaires and documentation. The data analysis techniques used were Qualitative Descriptive Analysis, and Descriptive Static Analysis. Research on this offers novelty in the form of more visual and interactive learning media, allowing students to understand complex biological concepts through interesting graphical and animated representations. In addition, these learning videos provide flexibility for students to learn independently and repeatedly, thus improving conceptual understanding and accommodating various learning styles.

THE PHENOMENON OF THE GAME AS A MEDIA PRACTICE

The article is devoted to the study of the game phenomenon and its medial meaning. This medial meaning of the game determines its wide use in media practices – the entire set of human communications in the world. They can be called manipulative in the modern world. Therefore, the main goal of the article is to analyze the phenomenon of the game through the manipulative reality in which it is used.

Cross-Linked Metathesis Polynorbornenes Based on Nadimides Bearing Hydrocarbon Substituents: Synthesis and Physicochemical Properties.

Metathesis homo- and copolymerization of bifunctional monomers bearing two norbornene moieties was studied. The monomers were synthesized from cis-5-norbornene-exo-2,3-dicarboxylic anhydride and various diamines (hexamethylenediamine, decamethylenediamine, 1R,3S-isophoronediamine). The metathesis homopolymerization of these bis(nadimides) in the presence of the second-generation Grubbs catalyst afforded glassy cross-linked polymers in more than 90% yields. The metathesis copolymerization of the bis(nadimides) and a monofunctional norbornene derivative containing the β-pinene fragment also resulted in insoluble cross-linked polymers in nearly quantitative yields. The structures and purity of the synthesized polymers were confirmed via IR spectroscopy and CP/MAS NMR spectroscopy. Conditions for the fabrication of mechanically strong solution-cast thin films based on copolymers synthesized from the comonomers mentioned above were determined by varying the content of the cross-linking agent. It was shown that the films made in this way are stable in a range of organic solvents and could be useful as semipermeable or membrane materials for use in liquid organic media. The permeability of the polymer films in question to 1-phenylethanol and mandelic acid was studied. The results obtained are discussed along with the data from the DSC, TGA, and powder X-ray diffraction studies of the properties of the synthesized metathesis homo- and copolymers.

Robust Amide-Linked Fluorinated Covalent Organic Framework for Long-Term Oxygen Reduction Reaction Electrocatalysis.

The high energy demand of the evolving world opens the door to develop more sustainable and environmentally friendly energy sources. Oxygen reduction reaction (ORR) is a promising candidate, being the 2e- pathway of great interest for the green production of hydrogen peroxide. Metal-free covalent organic frameworks (COFs) electrocatalysts present a suitable alternative to substitute the noble-metals more commonly employed in this application. However, the lability of the linkages building up the framework raises an issue for their long-term use and application in aggressive media. Herein, a stable amide-linked COF is reported through post-synthetic modification of a previously reported imine-linked COF proven to be effective as an electrocatalyst, enhancing its chemical stability and electrochemical response. It is found that after the linkage transformation, the new electrocatalyst displays a higher selectivity toward the H2O2 production (98.5%) and an enhanced turnover frequency of 0.155s-1, which is among the bests reported to date for metal-free and COF based electrocatalysts. The results represent a promising step forward for metal-free non pyrolyzed electrocatalysts, improving their properties through post-synthetic linkage modification for long-term operation.

Living both here and there: a study of identity construction among Korean-Chinese elites in an international metropolis

ABSTRACT This study explores how college graduates from an ethnic minority group, bilingual Korean-Chinese, negotiate and reconstruct their identities in the scale-changing process as they move from ethnic minority communities to an international metropolis in China. Drawing on the notion of scale, this study used data collected from semi-structured interviews with 24 bilingual Korean-Chinese participants in Shanghai to explore their lived experiences. Their language use in social media was also tracked and recorded over a period of four months. The findings reveal that most of the participating bilingual Korean-Chinese elites flexibly moved across the spatial–temporal scale and the social scale, situationally adapting their language use to the environment and for various communicative purposes. As such, they retained their ethnic identity while accommodating new identities, achieving a reconciled ‘amphibious identity’ by ‘living both here and there.’ The remainder of the participants chose to use either Chinese or Korean, under the influence of their monolingual language ideology, and developed a marginalised or replacement identity. This study contributes a more fine-grained and non-reductionist understanding of ethnic minority migrants’ construction of identity in a situation of mobility and its relation to their language practices across different scales.

The influence of social media on tourist behavior

AbstractThis study explores the influence of the technology acceptance model (TAM) to identify the impact of social media use on the behavior of potential travelers. Data derived from 586 respondents to a recent survey carried out in Southern China suggest that: (a) tourists' perceptions of ease of use and their perceived interest in social media have a significant positive effect on attitudes toward using it; (b) the perceived usefulness of social media has a significant positive effect on attitudes toward using it; and (c) the positive effects of external factors such as subjective norms and interactivity on tourists' perceptions of its usefulness, ease of use and interest in social media have been verified. This study puts forward suggestions on the use of social media promotion and marketing in tourism destinations resulting from the survey.

Playing an Augmented Reality Escape Game Promotes Learning About Fake News

AbstractThe spread of fake news poses a global challenge to society, as this deliberately false information reduce trust in democracy, manipulate opinions, and negatively affect people’s health. Educational research and practice must address this issue by developing and evaluating solutions to counter fake news. A promising approach in this regard is the use of game-based learning environments. In this study, we focus on Escape Fake, an augmented reality (AR) escape game developed for use in media literacy education. To date, there is limited research on the effectiveness of the game for learning about fake news. To overcome this gap, we conducted a field study using a pretest-posttest research design. A total of 28 students (14 girls, mean age = 14.71 years) participated. The results show that Escape Fake can address four learning objectives relevant in fake news detection with educationally desired effect sizes: Knowledge acquisition (d = 1.34), ability to discern information (d = 0.39), critical attitude toward trustworthiness of online information (d = 0.53), and confidence in recognizing fake news in the future (d = 0.41). Based on these results, the game can be recommended as an educational resource for media literacy education. Future research directions are also discussed.

Impact of nanopore confinement on phase behavior and enriched gas minimum miscibility pressure in asphaltenic tight oil reservoirs

Miscible gas injection in tight/shale oil reservoirs presents a complex problem due to various factors, including the presence of a large number of nanopores in the rock structure and asphaltene and heavy components in crude oil. This method performs best when the gas injection pressure exceeds the minimum miscibility pressure (MMP). Accordingly, accurate calculation of the MMP is of special importance. A critical issue that needs to be considered is that the phase behavior of the fluid in confined nanopores is substantially different from that of conventional reservoirs. The confinement effect may significantly affect fluid properties, flow, and transport phenomena characteristics in pore space, e.g., considerably changing the critical properties and enhancing fluid adsorption on the pore wall. In this study, we have investigated the MMP between an asphaltenic crude oil and enriched natural gas using Peng-Robinson (PR) and cubic-plus-association (CPA) equations of state (EoSs) by considering the effect of confinement, adsorption, the shift of critical properties, and the presence of asphaltene. According to the best of our knowledge, this is the first time a model has been developed considering all these factors for use in porous media. We used the vanishing interfacial tension (VIT) method and slim tube test data to calculate the MMP and examined the effects of pore radius, type/composition of injected gas, and asphaltene type on the computed MMP. The results showed that the MMP increased with an increasing radius of up to 100 nm and then remained almost constant. This is while the gas enrichment reduced the MMP. Asphaltene presence changed the trend of IFT reduction and delayed the miscibility achievement so that it was about 61% different from the model without the asphaltene precipitation effect. However, the type of asphaltene had little impact on the MMP, and the controlling factor was the amount of asphaltene in the oil. Moreover, although cubic EoSs are particularly popular for their simplicity and accuracy in predicting the behavior of hydrocarbon fluids, the CPA EoS is more accurate for asphaltenic oils, especially when the operating pressure is within the asphaltene precipitation range.

Dual-wavelength synchronously mode-locked Cr:LiSAF laser with a tunable beating frequency and a central wavelength.

We demonstrate a versatile dual-wavelength synchronous mode-locking of a diode-pumped Cr:LiSAF laser for the first time, to our knowledge. A two-color mode-locked operation is achieved by using intracavity birefringent filters (BRFs) or etalons as frequency-selective elements. Using filters with different thicknesses and hence different free spectral ranges (FSRs), wavelength separation in two-color mode-locking could be selected between 1 and 9 nm, with corresponding beating frequencies in the 0.4-3.5 THz range. Moreover, the central wavelength of the two-color output could be tuned smoothly between 840 and 875 nm, only limited by the bandwidth of the semiconductor saturable absorber mirror (SESAM) used for mode-locking. The method, which enables easy adjustment of the central wavelength and beating frequency of a dual-wavelength operation, is suitable for use in other laser gain media as well.

Functionalization of morphology in optimization of dielectric, electrical/impedance modulus, and relaxation mechanisms of Co-Ni doped M-type Sr nanoferrites

In this article, novel M-type hexaferrites SrCoxNixFe12−2xO19 were synthesized using the sol–gel method. The phase structure was characterized by x-ray diffraction, grain morphology was investigated from scanned electron micrographs, and dielectric/electric/impedance characteristics were analyzed in the frequency range of 100 Hz to 2 MHz. X-ray diffraction (XRD) revealed the formation of hexaferrites without any secondary phase. The grain size and distribution were significantly affected by Co-Ni dopants and there was an observation of cluster of grains, grain agglomerates, and improved inter-grain connectivity. The substitution of Co-Ni caused a reduction in crystallite size from 41.47 to 23.14 nm and the dielectric constant/loss tangent varied non-monotonically. The electric modulus indicated a non-Debye type relaxation and the charge transport mechanism exhibited conductivity relaxation to be more dominant than dielectric relaxation. The prepared ferrites show a large dielectric constant and hence are suitable for use in transformer core and storage media. The correlation of simulated grain/grain boundary parameters with morphology, dielectric parameter, and electric modulus has been presented.

Silicon flow stop frame for encapsulation of CMOS microsensor chips by wet anisotropic etching in KOH

Bulk micromachining in silicon is governed by the etching process where anisotropic (wet) etching in KOH can yield complex structures beyond that achievable with isotropic (dry) etching techniques. One example is the miniaturised frame reported herein with an area of 2.9 to 7.5 mm2, walls that are 1/10 mm thick, a height of 525 μm equipped with sloping walls that takes advantage of the 54.7° angle of the (111) planes to the horizontal (100) top surface of the wafer. Convex corners liable to damage are protected by sacrificial bridge structures which are etched thin to a point where the frame can be easily removed from the bulk substrate material. Frames made from isotropic (dry) etching processes have been made for comparison. Although the frame structure has different applications in microfabrication, the intended use is a flow stop barrier preventing liquid resins from entering the active area of a CMOS chemical sensor chip during encapsulation for use in aqueous or gaseous media. Beyond this specific proof-of-concept, the strategy is expected to be of general interest for all who treasures KOH etching and wants to explore new avenues based on this process.

Percentage of using formulaic language in media discourseA comparison between the visual media and the written press

the language we use daily; A product of society, but each of us embodies it in his way. Therefore, the speaker produces the language, but there is another aspect of the language, which is ready-made linguistic pieces, used directly by the individual owned by the linguistic group. Formulaic language is a general term for ready-made phrases in the language that have previously been produced and stored in human memory. This language usually has a fixed grammatical formula and a special meaning according to the situation and context in which it is presented. The use of this language leads to the coordination of sentences in the process of writing and communication, as well as adopting the eloquence of the sender and can influence the recipient more and convince him of his ideas, as well as help in logical intentions, automatic translation, and smart answers. This research, titled "Percentage of using formulaic language in media discourse: A comparison between the visual media and the written press", sheds light on the intensity of the formal language in the visual media and the written press. In the beginning, the formulaic language was explained, and then its use in the Kurdish media was explained. The importance of research in linking the media discourse with formal language, the purpose of which is to know the percentage of using this language on the one hand, and on the other hand, to know the percentage of its use between the two types. To conduct the research, (18) interviews and articles were taken from the visual media and the written press. After that, six components of the grammatical language were extracted, which are (linguistic accompaniment, coins (expressions), metaphor, proverbs, phrasal verbs, and lexical expressions) according to (Wadi), and the use of each one of them was indicated in a table.

META ANALISIS EFEKTIFITAS PENGGUNAAN MEDIA KOMIK DIGITAL DI SEKOLAH DASAR

The purpose of this study was to analyze the effect of using digital comics in the elementary school environment by combining the results of various previous studies. In this study we used meta-analysis research by analyzing data from journals or articles about the influence of digital comic media for use in elementary schools. This research begins with searching, then finding and collecting research that is appropriate to the topic and at the same time selecting, calculating effect sizes, analyzing the results of effect sizes. calculations and draw conclusions and interpret research results through meta-analysis methods. Data were analyzed using quantitative methods. Based on the results of this study it can be concluded that digital comic media is quite effective for elementary school children. This is reflected in the average N-Gain percentage which is between 56-75% and the N-Gain is in the medium category. Improved learning outcomes can affect the average. It can be seen that before using digital comic media, the average value was 57.43 and after using digital comic media, it was 82.35.

Superlubricity Achieved by a Transparent Poly(vinylpyrrolidone) Composite Hydrogel with Glycerol Ethoxylate in Ocular Conditions.

Efficient and stable ocular lubrication is pivotal in safeguarding eye tissues from wear, especially under repetitive strain due to frequent blinking. Hydrogels have been reported to possess adjustable mechanical properties, biocompatibility, durability, and elevated water content and extensive utilization in medical fields. In this work, a kind of visible photo-cross-linking poly(vinylpyrrolidone) (PVP) hydrogel was designed and synthesized using 1-vinyl-2-pyrrolidone (NVP) and poly(ethylene glycol) diacrylate (PEGDA). To optimize the structure and improve the lubrication performance of hydrogels, we prepared and investigated glycerol ethoxylate (GE)-introduced composite hydrogels (GE/PVP). The results show that the addition of 3 wt % GE helped the hydrogel to form a uniform and dense porous matrix and reduce the frictional coefficient (COF) by over 50%, achieving superlubricity (COF ≈ 0.005). However, with the excessive increase of GE (6 wt %), the structure of the hydrogel is destroyed, inducing pore walls to thin and expand. After that, a lubrication mechanism of the GE/PVP composite hydrogel was proposed, in which the addition of GE reduced the surface tension of the hydrogel, enhanced the hydration ability of the hydrogel, and thus decreased the friction between sliding surfaces. Besides, the cytotoxicity tests show that the composite hydrogels possess good biocompatibility. Overall, the as-synthesized hydrogels hold great potential as lubricating medium for use in ocular applications.

Errors Use of Indonesian Language in Public Outdoor Media in Manado City

The primary objective of this investigation is to scrutinize the utilization of the Indonesian language in outdoor media within Manado City, focusing on physical attributes, linguistic aspects, and the general application of the language in this specific context. Employing a qualitative research approach, the study centers its analysis on outdoor media installations situated in Manado, utilizing a sample size of 10 randomly selected images. The data collection process involves two main steps: firstly, gathering information on language usage in public spaces throughout Manado City, and subsequently, selecting ten data points that represent seven key aspects of Indonesian language prioritization. The findings of the study reveal two noteworthy outcomes: firstly, public space managers exhibit a preference for foreign languages over Indonesian in their language usage; and secondly, deviations from language rules are apparent, particularly in terms of spelling and word choice. The examination of Indonesian language use in outdoor media within Manado City indicates a presence of linguistic errors that defy established rules. Physically, there is a fusion of languages, comprising both Indonesian and foreign languages. While the language structure adheres to rules, imperfections persist in spelling and word selection. Despite these challenges, there is a positive trend in language typography, signaling an improvement in this specific aspect. In essence, the study underscores the existence of linguistic shortcomings in the public use of the Indonesian language in Manado City, encompassing discrepancies in language mixture, structural errors, and evolving typography practices

Text Mining Approaches to Language Use in Social Media: The Case of Portuguese Bué

This study describes processes of language change in Angolan Portuguese focusing on the use of intensifiers. Previous studies have shown that intensifiers are a relevant category for the study of language change due to their rapid change and variable meaning. It has been noted that intensifiers are particularly prone to renewal, suggesting speakers’ desire to innovate. Informed by a Digital Humanities approach, we collect and analyze data from Twitter (now X), focusing on the multi-functional intensifier bué, ‘very’, in Angolan Portuguese (AP). In this paper, we (1) provide an overview of the word’s distribution in AP, (2) consider the processes of change involved in bué’s variation, and (3) discuss the role of linguistic borrowing in language change and grammaticalization, shedding light on some of the cultural aspects that play a role in this word’s development, such as the influence of the media and the contact situation between Angolan and European Portuguese.

Optimasi Variasi Media Pendingin Dari Minyak Nabati Terhadap Kekasaran Permukaan Baja AISI 1045 Pada Proses Bubut CNC Menggunakan Metode Taguchi

Along with customer demand, the manufacturing industry must improve the quality of its products. In addition to product quality, environmental, safety, and health and welfare considerations also have a significant impact on the manufacturing business. One of the products of the manufacturing industry is a shaft which in its manufacture refers to the level of surface roughness. To minimize the surface roughness of the workpiece as a result of CNC lathe machining, coolant can be used. One of them is using coolant from vegetable oil. Vegetable oil is known as an ecologically acceptable and safe cooling medium for use in manufacturing operations. So a study was conducted to determine the surface roughness value of the workpiece (AISI 1045 steel) using 2 types of vegetable oil as a cooling medium (coconut oil and palm oil). Taguchi experimental design was used in this study. Based on the measurement results, the surface roughness value of AISI 1045 steel with palm oil coolant is 1.614 m, and coconut oil is 1.554 m. The coconut oil coolant type can optimize the minimum AISI 1045 steel surface roughness value with a value of 1,554 m at a cutting speed of 1273 rpm, a depth of cut of 0.50 mm, and a cutting motion of 0.16 mm/put.

Improving the prediction of social media engagement in universities by utilizing feature selection in machine learning

This study aims to examine the importance of feature selection in machine learning, specifically in predicting user engagement with social media post photographs on university Facebook pages. The paper uses a thorough analysis to demonstrate the crucial significance of choosing suitable features and their corresponding algorithms. The research intends to demonstrate how this strategic approach affects the accuracy of prediction findings in social media interaction. The research presents a compelling case study involving 24 leading universities from Australia, the United Kingdom, and the United States. The results underscore the efficacy of the method, stressing that the meticulous selection of characteristics and the use of appropriate algorithms are crucial elements for attaining the best results in social media forecasts. Implications: The study's results have important consequences, particularly within the changing environment of machine learning and its use in social media. Feature selection and algorithm choice are vital for optimizing social media initiatives for institutions.

Library music as a matter of time

The industry of library music (pre-existing pieces that can be licensed for use in media) has grown considerably in the past two decades with its transition to a digital medium. A rising number of composers rely on this music as a source of income, along with audiovisual creators who increasingly use it in their productions. This expansion has accentuated a fundamental aspect of library music: the creation of large quantities of tracks at breakneck speed. Parallel to this, the video editors and videographers who form library music's main client base experience tight production deadlines where the choice of music is often left as an afterthought. This article explores the implications of the sped-up creation and use of library music in the current online media landscape. Although the interactions of composers and videographers with this music are often fraught with concerns of limited time, their attitudes towards this acceleration vary considerably: for instance, composers describe their fast-paced work in widely different ways, viewing it as a constraint, or, on the contrary, as a positive and freeing aspect. That being said, the sense of urgency shared by these agents has wide-ranging impacts on every step of the ‘life’ of a library track, from its composition and presentation to its selection and synchronisation with images. As composers attempt to appeal to hurried videographers browsing libraries, these, in turn, resort to this music as an invaluable strategy to retain their audience's attention. Furthermore, sonic stereotypes that are prevalent in library music are valued as communication shortcuts in audiovisuals where messages must be conveyed through instantly recognisable musical formulas. In addition to broader impacts on the workings of library music, this widespread perception of ‘lacking time’ is also a vital factor that shapes its sonic characteristics themselves, making library music truly a matter of time.