778 research outputs found

    The Journey of Dovahkiin

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    This is a project that two fans of the game called Skyrim made and enjoyed.https://remix.berklee.edu/graduate-studies-scoring/1186/thumbnail.jp

    Fade Lighting Control Method for Visual Comfort and Energy Saving

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    This study proposes a fade lighting control method to ensure the visual comfort of indoor occupants through gradual illuminance control while saving energy. The illuminance sensor measures the indoor illuminance and calculates the required illuminance for achieving a reference illuminance of 500 Lux. The control illuminance for each lighting is derived based on the required illuminance, and it is confirmed to fall within the threshold range of 20%. The illuminance values and time intervals for fade lighting control are calculated, ensuring that the amount of illuminance adjustment is divided by the size of the threshold range or less. In the performance evaluation, the proposed method (experimental group) was compared with the influence-based control method (control group). The result shows that this fade lighting control method minimizes the visual discomfort of occupants caused by sudden changes in lighting, and the same energy-saving of 11-42% is achieved as the control group

    Seung-Taek Lee

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    As one of the first generation of South Korean artists to embrace radical experimentation in art, Seung-Taek Lee has been at the forefront of Korean avant-garde art since the 1950s. Through his diverse and highly individualistic practice, Lee questions established political, social and artistic values, thereby consistently pushing the boundaries of art and culture. While Leeā€™s artistic experiments range from soft sculpture and site-specific installation to land art and performances, he is best known for his conceptualisation of ā€˜non- sculptureā€™ which not only signifies a rejection of values traditionally attributed to sculpture, but also of existing ideas or orders. The works shown in Leeā€™s first-ever European solo exhibition at MOT International are mainly from the period between late 1950s and early 1970s, which is regarded as the artistā€™s most experimental phase, resulting in works such as Wind from East (1971) and Fire Ceremony (1964). Lee often works in series, at times by repeatedly using same materials and at others by revisiting similar motives or concepts: both Godret Stone (1957) and Paper Tree (1970) belong to Leeā€™s early binding and wind series respectively. Inspired by the stones traditionally used in tying knots when plating handcrafts mats, Lee created Godret Stone by binding bifurcated stones along the flat and horizontal wooden bar with a cord. Precisely through this practice of binding an object (or combining disparate objects) using a rope, scarf or an iron cord, Lee subverts the natural material properties of the object, challenging the established notion of physical materiality. The precariously hanging stones of Godret Stone appear malleable and ā€˜squeezable,ā€™ having lost their solid materiality. This effect is heightened to a greater extent in Soft Rock, which is one the largest and most ambitious works from Leeā€™s binding series. While the subversion of the inherent material qualities serves as a strategy of questioning existing mode of perception, it also expressively visualises a power relationship between the enveloping material and the one being enveloped. In the 1960s Lee began to experiment with the concept of dematerialisation, extensively working with transient materials such as wind, water, smoke and fire. Paper Tree (1970) and Wind-Folk Amusement (1971) are Leeā€™s signature works from the wind series, for which the artist used everyday materials such as cloths, papers and vinyl to visualise the sheer force of the wind. Arranged specifically for the space at MOT International, the Paper Tree installation derives from a series of Leeā€™s early outdoor installations where strips of clothes were tied along the tree branches to flutter and billow in the wind, thereby giving form to the transience of nature. The photographic documentation of Wind Folk Amusement dramatically captures the energetic movement of the wind which is visualised by the unravelling and fluttering of an enormous 80 meter long scarlet cloth in the sky. Natural landscape is not only used as a backdrop to his performances and outdoor installations, but nature itself acts as an artistic medium. What this highly eclectic and experimental body of works have in common is their references to Korean traditions and folk sensibilities. Working in the aftermath of the Korean War, Lee actively responded to (or reacted against) the rapid social, political, economic and cultural changes that he witnessed and experienced. With an increasing influx of foreign cultural influences, which has been facilitated by globalisation, Lee sought to introduce art that reflects modernity and cultural identity specific to Korea. One of the ways in which he achieved this was by incorporating traditional objects, rituals and materials that are imbued with the unique history and culture of the nation. For his land art and performance works, Lee even purposely chose historical landmarks such as burial mounds or Han River, the sites which are symbolic of the historical past of Korea as well as the current socio-political situation of the divided nation. On the other hand, the dense strips of white mulberry papers of Paper Tree which seem to grow out from the broken tree branches, recalls shamanistic rituals which traditionally take place in remote areas near mountains. In fact, Leeā€™s interest in shamanism and its status as a marginalised folk belief in Korea appears frequently throughout his oeuvre. Leeā€™s Wind-Folk Amusement performance is yet another example which has a visual reference to Korean folk festivals where colourful flags similar to the scarlet cloths used in Leeā€™s performance are hung on the trees. This exhibition thus presents works of an artist who is currently being re-evaluated by the international art scene as arguably one of the most radical and experimental artists in the East Asia region in the 20th century. The show not only brings together Leeā€™s signature works, but for the first time, it also introduces the Untitled series (1968) which are abstract self-portraits of the artist. While Leeā€™s artworks provide an insight into understanding his experimental artistic practice, they also offer an alternative perspective to the rich and diverse avant-garde art scene in East Asia. Seung-Taek Lee was born Kowon, North Korea, 1932 and lives and works in Seoul. Selected exhibitions include Seung-Taek Lee, Sungkok Art Museum, Seoul (2012); Modern Art of Korea & Australia 1976-2011, National Museum of Contemporary Art, Gwacheon (2011); Gwangju Biennale, Gwangju (2010); Beginning of New Era, National Museum of Modern Art, Seoul (2009); Lines the Space, Gyeonggi Art Museum, Ansan, Korea (2007); New Acquisition Exhibition, National Museum of Contemporary Art, Gwacheon, Korea (2006); Art-60s-70s Experiment, National Museum of Contemporary Art, Gwacheon, Korea (2001). Lee participated in the 6th Paris Biennial (1969) and 3rd Sao Paolo Biennial (1970). In 2009 he was awarded the Nam June Paik Art Center Prize

    Video-Based Stylized Rendering using Frame Difference

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    In this paper, we suggest video based stylized rendering using frame difference. Stylized rendering using video frame has a temporal problem that occurs a difference between the previous and current frame. To reduce the temporal problem, we generate reference maps using temporal frame difference in correction and rendering steps. A correction method using reference maps can be reduced flickering effect caused by frame difference between the previous and current frame. We use a background map, an average map, and a quadtree-based summed area table as reference maps. Among these reference maps, the method using quadtree based summed area table can completely remove a flickering and popping effect. Also, a post-blurring method using bilateral filtering can be represented smooth, stylized rendering by removing unnecessary noise. Suggested stylized rendering system can be used in various fields such as visual art, advertisement, game and movie for stylized image contents generation

    Effects of Body Mass Index on Ankle Joint Muscle Function and Dynamic Proprioceptive Control

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    PURPOSE Increased body mass index (BMI) increases ankle instability and adversely affects human movement. This study aims to compare and analyze the muscle function and proprioception of the ankle joint based on Body Mass Index (BMI) to determine potential differences. METHODS Twenty-eight healthy male and female college students were categorized into overweight (ā‰„ BMI 23) and normal (< BMI 23) groups. Measurements included BMI, isokinetic strength of dorsiflexion, plantarflexion, eversion, inversion, ankle joint range of motion, and ankle joint proprioception. RESULTS In dorsiflexion, right 30Ā°/sec (p=.035), left 30Ā°/sec (p=.009) and right 120Ā°/sec (p=.011); in plantarflexion, left 30Ā°/sec (p<.001), right 120Ā°/sec (p=.007) and left 120Ā°/sec (p=.006) in ankle inversion, left 30Ā°/sec (p=.001), right 120Ā°/sec (p=.021) and left 120Ā°/sec (p=.007), left 30Ā°/sec (p=.014), 120Ā°/sec (p=.001) in ankle inversion-eversion ratio, right (p=.003) and left (p=.003) in ankle joint range of motion, right (p<.001) and left (p=.022) in total proprioception, and left (p<.001) in left-right proprioception were significantly different between the normal and overweight groups. CONCLUSIONS It was found that the overweight group had lower muscle strength, joint range of motion, and proprioceptive control function of the ankle joint than the normal group according to BMI. Therefore, exercise programs should be provided to strengthen the periarticular muscles involved in ankle movement, such as the tibialis anterior, soleus, and peroneus longus, and to control dynamic proprioception to prevent ankle injuries and function of the ankle joint according to BMI

    Effect of grain boundaries on ion migration in stabilized Ī“-Bi2O3 thin- film electrolyte

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    Solid electrolytes with high oxygen-ion conductivity are of significant interest for many applications. Over the past several decades, numerous studies have been conducted on the effect of grain boundaries on the process of increasing the ionic conductivity of solid electrolytes. Given that nanocrystalline thin- or thick-films have been investigated in relation to lowering the operating temperature of solid electrolytes to less than 650 Ā°C, more rigorous and quantitative assessments are necessary to determine how the ion transport characteristics are affected by the numerous interfaces formed in nano-grains devices. Please click Additional Files below to see the full abstract

    A highly active and durable lanthanum strontium cobalt ferrite cathode for Intermediate-Temperature solid Oxide fuel cel

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    Solid oxide fuel cells (SOFCs) are promising techniques for high energy efficiency, fuel flexibility, and low pollutant emissions. For commercialization of SOFCs, it is required to decrease the operating temperature. At this intermediate temperature region, the cathodic polarization resistance significant due to the thermally activated oxygen reduction reaction (ORR). To compensate this, highly active cathode materials have been considered and lanthanum strontium cobalt ferrite (LSCF6428, La0.6Sr0.4Co0.2Fe0.8O3-Ī“) has been attracted as a cathode material for SOFCs because of its high mixed electronic and ionic conducting (MIEC) nature. However, one of the major concerns of LSCF6428 is the degradation during the long-term operation. Currently, Sr segregation has been reported as one of the major reasons for the LSCF degradation. In this study, we investigated LSCF2882 (La0.2Sr0.8Co0.8Fe0.2O3-Ī“) and compared with LSCF6428 as a SOFC cathode. X-ray diffraction (XRD) and Rietveld refinement were applied to analyze phase structures. By electrical conductivity relaxation (ECR) technique, Oxygen surface exchange coefficients (kchem) and chemical diffusion coefficients (Dchem) of LSCF2882 were evaluated and we observed enhancements compare to LSCF6428. For interpretation of enhanced oxygen transport kinetics, we tried to visualize the interstitial oxygen conduction pathways and the bond valence sum (BVS) mapping method was utilized by Valence program. BVS mapping results show clearly demonstrating the 3D network of the interstitial pathways at 600oC in LSCF2882. Electrochemical performances were investigated by EIS (Electrochemical Impedance Spectroscopy) and single cell performance was also evaluated. In addition, long-term stability test was performed for over 500 hours. LSCF2882 showed better performances and it exhibited no degradation during the stability test. Please click Additional Files below to see the full abstract
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