Physical Media Research Articles

Physics calculator application with matlab as a learning media to thermodynamics concept

In the material of thermodynamics, many physics equations make students abstract in understanding the material. It is necessary to have a learning media to be able to visualize the thermodynamics material. Matlab is usually used in numerical analysis. Currently, Matlab can be used as a medium for learning physics by students to understand the material well. This study aims to develop a physics calculator application on the subject of thermodynamics using Matlab software. The research method used in this research is the research development method with the development model of ADDIE (Analysis, Design, Development, Implementation and Evaluation). The instruments used in this study were a validation test questionnaire and a student response questionnaire. The analysis technique applied is the descriptive analysis and the average analysis techniques. The results developed in this study are in the form of a Physics calculator application that helps physics calculations on thermodynamic material. The average validation result by material experts and media experts is 83.1%, with the "Good" category. In other words, according to experts, this media is suitable for use in physics learning. This application also received a positive response from students, with an average student response score of 79.8%. This application is also equipped with materials, physics calculators, physics simulations and question exercises so that it is expected to help students understand physics learning in thermodynamics material.

REVISITING PROTOTYPING IN 2020: A SNAPSHOT OF PRACTICE IN UK DESIGN COMPANIES

AbstractThe importance of prototyping is unanimous with numerous studies into the media, types, roles and properties of prototypes. However, no recent papers have sought to examine and characterise industry practice and if and how this has changed since the early 2000s.To address this, a snapshot of industrial prototyping practice with particular attention to the what, when, why, how, and by whom is reported. The study involved five small-medium sized design companies based in the South-West of the UK and validation of the findings by two independent practitioners.The snapshot revealed that 3D printing and virtual prototyping tools have reached widespread adoption in SMEs,that their design processes are highly agile and iterative and are difficult to fit to any extant design process model.Rather, the approaches appear to implicitly comprise of three levels of design convergence: macro, meso, and micro, which correspond to finer/more detailed changes.The results also reveal the frequent transitions between digital and physical media and the need to manage these transitions to ensure the product representations in different media are appropriately up-to-date.

Powtoon Based Physics Learning Video Development on Straight Movement Materials for Class X SMA

The aim of this research was to produce a valid Powtoon-based physics learning video on straight motion material for class X senior high school. The product developed is in the form of a physics learning video based on Powtoon on straight motion material for class x senior high school. The research method uses the ADDIE development model with five stages, namely Analysis, Design, Development, Implementation, and Evaluation. The instrument used is a validation sheet that is given to experts in providing an assessment of the validity of the media. The assessment instrument includes four aspects of the assessment, namely the design aspect, the pedagogic aspect, the content aspect, and the technical aspect. The results of the validation of these four aspects obtained an average score of 4.34. Video meeting 1 got the final score with a value of 4.31. Video meeting 2 got the final score with a value of 4.36. Video meeting 3 got the final score with a value of 4.37. Powtoon-based physics learning media has been successfully designed for three meetings which include straight motion learning material in class X SMA. This learning media has been successfully created using the powtoon application. This learning media has been validated by experts. All experts have stated that every element of the assessment of this learning media is valid, so it is suitable to be used as a medium for learning physics in straight motion material.

Chaos for communication

This work shows that chaotic signals with different power spectrum and different positive Lyapunov exponents are robust to linear superposition, meaning that the superposition preserves the Lyapunov exponents and the information content of the source signals, even after being transmitted over non-ideal physical medium. This work tackles with great detail how chaotic signals and their information content are affected when travelling through medium that presents the non-ideal properties of multi-path propagation, noise and chaotic interference (linear superposition), and how this impacts on the proposed communication system. Physical media with other non-ideal properties (dispersion and interference with periodic signals) are also discussed. These wonderful properties that chaotic signals have allow me to propose a novel communication system based on chaos, where information composed from and to multiple users each operating with different base frequencies and that is carried by chaotic wavesignals, can be fully preserved after transmission in the open air wireless physical medium, and it can be trivially decoded with low probability of errors.

الوعی الجسمانی: دراسة فی جمالیات الجسد

إن المتأمل لطبيعة الجسد يلحظ أنه لا يمکن عده جسدا مصمتا، أو أداة للإدراک فحسب؛ وإنما الجسد هو– أيضا- جهاز معرفي، وأداة للرؤية، والتعبير عن أفکارنا وتحويلها إلى أشياء مجسدة في الواقع. فالجسد البشري ليس مجرد إطار جسماني أو مظهر خارجي للإنسان؛ وإنما هو أسلوب حضورنا وتعبيرنا في العالم. أو بتعبير آخر، هو وعي جسماني ملتحم بالعالم. وأما في الفن، فالجسد بمنزلة تشکيل بصري أو علامة مرئية؛ مادام بإمکانه تجسيد المعنى من خلال لغة الإيماءة، التي تبطن– بدورها- المعاني والدلالات. تسعى الدراسة إلى تسليط الضوء على تجليات الجسد في الأعمال الفنية ليس بوصفه صورة فنية، يتواصل معها المتلقي فحسب؛ وإنما يمتد ليشمل–کذلک- کونه الوسيط المادي للعمل الفني، مع بيان الکيفية التي تخاطب بها الأعمال الفنية إدراکنا الحسي ومشاعرنا من خلال إيماءات تجسد أفکارا ومعاني. کما تناقش الدراسة دور الجسد في العملية الإبداعية، مع بيان طبيعة العمل الفني ليس بوصفه إعادة إنتاج لفکرة معطاة سلفا؛ وإنما المعنى يکون– بخلاف ذلک- متجسدا في تعبير الفنان الفيزيقي، أي في عمله الفني. وبذلک فإن هذه الدراسة تحاول الإجابة عن التساؤلات التالية: هل الجسد الحي مجرد موضوع فيزيقي حاضر أمام الوعي، أو هو نفسه وعي جسماني ملتحم بالعالم؟ وإن کان الجسد وعيا متجسدا، فهل الإبداع نشاط ذهني روحي يجري على مستوى الخيال، أو تلتحم فيه الرؤية الذهنية برؤية العين واليد؟ وبأي معنى تتأصل الخبرة الجمالية على مستوى خبرتي الإبداع والتلقي في الجسد؟ وهل الوشم– بدوره- انتهاک للجسد، أو هو أسلوب من أساليب التعبير الإبداعي؟ ومن أجل الإجابة عن تلک الأسئلة السابقة، فإن الدراسة سعت إلى استخدام المنهج التحليلي النقدي، الذي يهدف إلى تحليل المفاهيم والمشکلات المتضمنة في قضية البحث، وقراءة النصوص قراءة نقدية لا تکتفي بعرض الأفکار؛ وإنما تحاول فهمها وتحليلها، ومن ثم تقييمها. When contemplating the nature of the body, it is observed that it could not be considered as a solid body, or just a tool for realization. A body is a cognitive instrument, and a tool for vision and for expressing our ideas and converting them into embodied matters in reality. The human body is not a mere physical frame or an external appearance of the human being; it is the method of our presence and expression in the world. In other words, it is a body consciousness merged with the world. While in art, the body is considered to be a visual formation or a visible sign, as long as it is able to embody the meaning through the use of the gesture language, in which the meanings and connotations are embedded. The study seeks to highlight the manifestations of the body in the artistic works; this is not only as an artistic image with which the recipient can communicate, but it also extends to the idea that the body is considered to be the physical medium of the artistic work, in addition to revealing the manner through which the artistic works address our sensory perception and our feelings through the gestures that embody ideas and meanings. Moreover, the study discusses the role of the body in the creativity process, in addition to revealing the nature of the artistic work as being a reproduction of a pre-given idea. On the contrary, the meaning is embodied in the physical expression of the artist, namely in his artistic work. Therefore, this study tries to answer the following questions; Is the alive body a mere physical subject that is present in front of the consciousness, or is itself a body consciousness that is merged with the world? If the body is considered to be an incarnate consciousness, is creativity is considered to be a mental and spiritual activity on the level of imagination; or in it the mental vision merges with the eye and hand visions? Which meaning in which the aesthetic experience of the body is rooted, on the levels of the two experiences of creativity and reception? Is tattoo considered to be an abuse of the body, or it is a manner of creative expressions? For answering the previous questions, the study sought to use the analytical-critical method that aims at analyzing the concepts and problems included in the research issue, in addition to reading the texts in a critical way that is not satisfied by expressing the ideas, however, it tries to understand and analyze them, then evaluate them.

Physical Activity and Social Network Use of Adolescents in Overweight and Obesity Treatment.

Tackling obesity among adolescents requires the optimization of existing obesity treatment strategies. For this purpose, social and personal circumstances, individual needs and behavior of therapy participants need to be analyzed to tailor aims, content and methods of therapy interventions to the target groups. A total of 432 obesity therapy participants between 11 and 17 years completed a written survey in a national multi-center study conducted in 2015. The data collection on behavior, in terms of physical activity, media use and sociodemographic variables, was based on questionnaires from the KiGGS, HBSC and JIM studies. The results show that participants were found to be physically active together with friends (75.5%), alone (41.4%) and in sports clubs (34.9%). Girls (OR 1.55) were less likely to participate in sports clubs. Social networks, especially YouTube, WhatsApp, Instagram and Facebook, were widely used. However, differences emerged among sociodemographic groups (e.g., boys vs. girls) regarding the use of social network features. A third of participants reported that smartphone apps regularly encouraged them to exercise. The findings imply that obesity therapy approaches need to be adapted and more differentiated according to the specific needs of the target groups.

An Extraordinary Journey: The Memoirs of a Physical Medium by Stewart Alexander

This is a revised and updated version of Alexander’s book published in 2010 under the same title. The changes are minor; there are some additional reflections on the subject of Spiritualism by the author, but mainly they consist of additional accounts from sitters who have taken part in séances with Alexander since the original publication. Some appear in additional chapters described as “seminars,” reported chronologically, but in fact they are also witness accounts of séance experiences. The most significant addition, in terms of reporting startling new phenomena, is the Epilogue provided by American journalist and author Leslie Kean. There is no index. I found this book very readable. Also, having read it, I would find it difficult to disagree with the descriptions of Alexander by the late David Fontana (who provided the Foreword) and Annette Childs (who provided An Appreciation) as a person of integrity and dedication, as well as intelligence and good humour; in fact, “a true gentleman” (p.xxiii).

Decomposition of third-order constitutive tensors

Third-order tensors are widely used as a mathematical tool for modeling the physical properties of media in solid-state physics. In most cases, they arise as constitutive tensors of proportionality between basic physical quantities. The constitutive tensor can be considered the complete set of physical parameters of a medium. The algebraic features of the constitutive tensor can be used as a tool for proper identification of natural materials, such as crystals, and for designing artificial nanomaterials with prescribed properties. In this paper, we study the algebraic properties of a general asymmetric third-order tensor relative to its invariant decomposition. In correspondence with different groups acting on the basic vector space, we present the hierarchy of different types of tensor decomposition into invariant subtensors. In particular, we discuss the problem of non-uniqueness and reducibility of high-order tensor decomposition. For a general asymmetric third-order tensor, these features are described explicitly. In the case of special tensors with a prescribed symmetry, the decomposition is demonstrated to be irreducible and unique. We present the explicit results for two physically interesting models: the piezoelectric tensor as an example of pair symmetry and the Hall tensor as an example of pair skew-symmetry.

Assembling Auras: Towards a Methodology for the Preservation and Study of Video Games as Cultural Heritage Artefacts

Video games, while a digital art, live on physical media. Whether cartridge, magnetic tape or floppy disk, they degrade. Without care and study, they disappear and cannot be played again. While it might be possible to preserve play using emulation or video captures, scholars need to consider every option at their disposal to preserve video games for future study. This includes securing original versions of games and ephemera, recording play, interviewing game creators, and players, and much more. This article develops a new approach to conceptualise video games as material and cultural heritage, and proposes a methodology for their study, especially those for which there is no original version left.

Exploring Co-creative Drawing Workflows.

This article presents the outcomes from a mixed-methods study of drawing practitioners (e.g., professional illustrators, fine artists, and art students) that was conducted in Autumn 2018 as a preliminary investigation for the development of a physical human-AI co-creative drawing system. The aim of the study was to discover possible roles that technology could play in observing, modeling, and possibly assisting an artist with their drawing. The study had three components: a paper survey of artists' drawing practises, technology usage and attitudes, video recorded drawing exercises and a follow-up semi-structured interview which included a co-design discussion on how AI might contribute to their drawing workflow. Key themes identified from the interviews were (1) drawing with physical mediums is a traditional and primary way of creation; (2) artists' views on AI varied, where co-creative AI is preferable to didactic AI; and (3) artists have a critical and skeptical view on the automation of creative work with AI. Participants' input provided the basis for the design and technical specifications of a co-creative drawing prototype, for which details are presented in this article. In addition, lessons learned from conducting the user study are presented with a reflection on future studies with drawing practitioners.

Not streaming near you: FilmStruck’s failure and the demise of the cinema-specific model

ABSTRACT This article charts the rise and fall of FilmStruck – Turner Classic Movies (TCM) and Criterion Collection’s cinema-specific streaming service. Despite its premier specialty film catalog (e.g., art-house, international, independent, and classic cinema) and loyal fans, WarnerMedia shuttered the service in 2018 – after two years in business. This article argues that FilmStruck’s demise revealed the limitations of cinema-specific models and the precarious status of specialty cinema in the streaming sector. Specifically, this article analyzes FilmStruck’s curation in relation to TCM and Criterion Collection’s respective cable programming and physical media practices. Doing so reveals that FilmStruck’s founders and professionals endeavored to reconfigure specialty cinema’s meanings and reaffirm the values of film-oriented practices in the streaming context. Ultimately, by historically situating FilmStruck’s trajectory and strategies within larger institutional contexts, this article illuminates modest, yet nonetheless important struggles over business models, cultural value, media specificity, and professional identities in the tumultuous 2010s-era streaming landscape.

The impact of increased outpatient telehealth during COVID-19: Retrospective analysis of patient survey and routine activity data from a major healthcare system in England.

In response to societal restrictions due to the COVID‐19 pandemic, a significant proportion of physical outpatient consultations were replaced with virtual appointments within the Bristol, North Somerset and South Gloucestershire healthcare system. The objective of this study was to assess the impact of this change in informing the potential viability of a longer‐term shift to telehealth in the outpatient setting. A retrospective analysis was performed using data from the first COVID‐19 wave, comprising 2998 telehealth patient surveys and 143,321 distinct outpatient contacts through both the physical and virtual medium. Four in five specialities showed no significant change in the overall number of consultations per patient during the first wave of the pandemic when telehealth services were widely implemented. Of those surveyed following virtual consultation, more respondents ‘preferred’ virtual (36.4%) than physical appointments (26.9%) with seven times as many finding them ‘less stressful’ than ‘more stressful’. In combining both patient survey and routine activity data, this study demonstrates the importance of using data from multiple sources to derive useful insight. The results support the potential for telehealth to be rapidly employed across a range of outpatient specialities without negatively affecting patient experience.

Carbon Ruins: Engaging with Post-Fossil Transitions through Participatory World-Building

While many pathways to post-fossil futures have been articulated, most fail to engage people in imagining themselves as being part of those futures and involved in the transition. Following recent calls for more immersive experiences, the 2019 initiative “Carbon Ruins—An Exhibition of the Fossil Era” (Carbon Ruins) is a performance set around a historical museum from the future, which uses recognisable, culturally powerful physical objects to bridge the gap between abstract scenarios and everyday experiences. Through its physical presence and extensive media coverage, Carbon Ruins struck a chord with scientists, activists, creative professionals, policy makers, civil society organisations, and the general public. Like other imaginary worlds, Carbon Ruins is not finished. It is an open-ended process of narrating, imagining, and representing (the transition to) a post-fossil future. In this article we reflect upon Carbon Ruins as a participatory form of world-building that allows for new ways of knowing, and new ways of being, in relation to post-fossil transitions. We discern three different kinds of authorship that were taken on by participants: as originators, dwellers, and explorers. While the originator makes the future world a recognisable place, the dweller can engage active hope in place of a passive sense of urgency, and the explorer can transform resignation into commitment, with a fresh determination to leave the fossil era behind. Situating Carbon Ruins within a critical political tradition, we find post-fossil world-building to be a form of critique that destabilises accustomed ways of thinking and opens up new fields of experience that allows things to be done differently.

Adaptive DSR to mitigate packet dropping attacks in WMNs using cross layer metrics

Wireless Mesh network (WMN) is a form of Wireless Ad hoc network, where mesh topology is used to connect the radio nodes together and it is prone to vulnerabilities due to its open architecture. Packet loss is the major issue due to its open wireless physical media, frequent topological changes, scalability and power constraints. The most common blackhole and grayhole attacks besieged on network layer degrade the performance of WMN by dropping packets during transmission. In general, packet drops in WMN during transmission may happen due to mobility or buffer overflow or power depletion or malicious behavior of the intermediate nodes. This paper proposes an Adaptive Dynamic Source Routing protocol (ADSR) to detect the actual cause for packet drops, identify and isolate the misbehaving nodes using the cross layer metrics. It employs proactive, reactive mode of detection of packet dropping nodes and the packets are rerouted through alternate paths using packet salvaging technique. Bait-RREQ with virtual IP address is used to detect the blackhole nodes proactively and node behavior analysis is used to detect the packet dropping nodes reactively. The performance of ADSR is analyzed using a mathematical model by considering the characteristics of a node’s behavior. Using extensive simulations the performances are thoroughly analyzed, evaluated and compared with traditional DSR, WatchDog (WD), Bait-DSR (BDSR) protocols. Simulation results show that ADSR is better than other mentioned protocols with negligible increase in network overhead (less than 2%) which is due to the use of Bait-RREQ and packet salvaging technique. The proper identification of actual cause for packet drops significantly reduces the false positive rate of detection of malicious nodes with an increased packet delivery ratio (not lower than 95%) and throughput.

Assessing the scenic quality of transgressive dune systems on volcanic islands. The case of Corralejo (Fuerteventura island, Spain)

The formation of transgressive aeolian sedimentary systems on hot-spot volcanic islands results in globally singular conditions. The natural attractions and landscape features of these spaces can result in the concentration of urban-tourist developments in their surroundings, altering their physical integrity and their ecological and scenic functionality. This has been the case of the Corralejo dunefield in Fuerteventura (Canary Islands, Spain), where the strong pressure exerted by tourism is endangering the area's natural and landscape resources. This study aims to qualitatively assess the landscape heritage through a number of indicators, some of which are developed on the basis of user perception. Four landscape dimensions (substratum, sea, vegetation, and scenic background) were used to analyse the 24 landscape units into which the Corralejo beach-dune system was divided. The results show that this system presents a high landscape value, as do its four different dimensions. This value was found to decrease in areas bordering the urban area or where tourists were commonly present. Recommendations are proposed to improve the area based on user perceptions. This type of research is of interest for future planning, ordinance preparation and management with a view to establishing a balance between the physical medium and anthropic pressure.

Writing in water: dense responsive media in place of relational interfaces

In this essay we explore extensive modes of enactive engagement among humans, physical and computational media richer than the modes represented by classical notions of interaction and relation. We make use of a radically material and a potential-theoretic account of event to re-conceive ad hoc, non-pre-schematized activity in responsive environments. We can regard such activity as sense-making via dehomogenization of material that co-articulates subjects and objects.

Classical and Quantum Brain

The purpose of the research reported in this article is to establish a structural explanation of physical phenomena observed or experimented on natural neural networks and especially on the brain. A simplified model based on double stochasticity properties, concentrates on the synaptic structure of any neuron. The higher the energy spent for the neural network functioning, the greater the number of used synapses. The notion of consciousness field intensity, by an analogy with electrical intensity, leads to considering mental mechanisms associated with the classical model behavior. The Gaussian formalism appears naturally that shows some conditions for an activated neuron to produce a spike signal while a principle of saturation gives an argument for the optimization of the number of synapses involved in this production. As frequently, the optimum identified previously is the place of oscillations and an analytical approach builds a Hamiltonian, the quantization of which results in the quantum harmonic oscillator of a neuron. This quantized neural model resumes all the features and results associated with this oscillator and shows the high relevance of the term “oscillation” to describe the neuron behavior in spite of the counter-intuitive nature of the model. The explained phenomena span from the strong entanglement of information with the brain physical medium, more precisely with the neuron synaptic structure, to the brain waves observed on any electroencephalogram of any living [human] being. The strangeness of this research is that its initial foundation, the electrical analogy, is coherent from the classical to the quantum brain models and probabilities or wave functions bear interpretations in terms of action potential or electrical oscillations.

The Oppressed Disability Sees The Music

In the perspective of finding new ways of helping the deaf community, specifically in helping them understand music, this article introduces a new method of linking sounds to colors according to HK scale (abbreviation: Hadda and Karim). This scale is based on a direct calculation method shifting the frequency of an audible musical note to reach the frequency of a known-colored light. The physical medium in which the sound wave (10Hz-20kHz) propagates, such as air or steel, is taken into consideration to calculate its high order harmonic in the visible light range (400-700nm). HK scale associates to each note of music a color. This new method allows the creation of beautiful drawings as interpretation of musical pieces in a scientific way not based only on Synaesthesia. Some artworks of what music looks like are presented in the article, Beethoven sonata No. 14 (piano) for the listener and for the deaf, and the Bahraini National Anthem for the listener and for the deaf. This technique could be used to communicate with deaf people. It shows how important Art could be used in our daily life in different area. It means that Art is life.

The Utilization Of Geography Learning Media At High School In Karanganyar Regency


 Abstract
 
 The purpose of this study is to find out about the availability of learning media, including 1) Type, 2) Amount, and 3) Conditions. The research carried out is descriptive research with research data is quantitative data. The study was conducted in 23 high schools in Karanganyar Regency. The population in this study were all high school geography teachers and high school students of class X, XI Social Program and XII Social Program in Karanganyar Regency, which consisted of 17 state high schools and 6 private high schools. The high school which was used as the research subject was determined by proportional random sampling technique to obtain 13 high schools. Futhermore, the samples of teachers and students was determined by purposive sampling, where in each school took 1 teacher respondent and 6 students, so the total sample of teachers was 13 people and students were 78 people. The technique of collecting data in the study uses questionnaire, interview and observation methods. The analysis technique used is descriptive statistical analysis. In summary, from this research found the data condition of geography learning media of high school in Karanganyar Regency in 2016 were obtained, including; 1) The most types of media are Atlas, Pictures, Globe, Maps, Slide Powerpoint, and Computer / Laptop devices, 2) The number of media is classified as medium or available in every media in the school, and 3) The condition of the media is classified as poorly maintained for physical media and is very well maintained for media based on Digital Information Technology.

A Comprehensive Open-Source Simulation Framework for LiFi Communication

Light Fidelity (LiFi) is a new candidate for wireless networking that utilizes the visible light spectrum and exploits the existing lighting infrastructure in the form of light-emitting diodes (LEDs). It provides point-to-point and point-to-multipoint communication on a bidirectional channel at very high data rates. However, the LiFi has small coverage, and its optical gain is closely related to the receiver’s directionality vis-à-vis the transmitter, therefore it can experience frequent service outages. To provide reliable coverage, the LiFi is integrated with other networking technologies such as wireless fidelity (WiFi) thus forming a hybrid system. The hybrid LiFi/WiFi system faces many challenges including but not limited to seamless integration with the WiFi, support for mobility, handover management, resource sharing, and load balancing. The existing literature has addressed one or the other aspect of the issues facing LiFi systems. There are limited free source tools available to holistically address these challenges in a scalable manner. To this end, we have developed an open-source simulation framework based on the network simulator 3 (ns-3), which realizes critical aspects of the LiFi wireless network. Our developed ns-3 LiFi framework provides a fully functional AP equipped with the physical layer and medium access control (MAC), a mobility model for the user device, and integration between LiFi and WiFi with a handover facility. Simulation results are produced to demonstrate the mobility and handover capabilities, and the performance gains from the LiFi-WiFi hybrid system in terms of packet delay, throughput, packet drop ratio (PDR), and fairness between users. The source code of the framework is made available for the use of the research community.