Journal articles: 'Room Shape'

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Tomiku, Reiji, Noriko Okamoto, Toru Otsuru, Arata Yoshida, Yuto Kinjyo, and Shoma Suzuki. "Investigation on measurement sound field of absorption coefficient in reverberation room by numerical simulation - Relationship between room shapes and measurement results -." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 4 (November 30, 2023): 4748–55. http://dx.doi.org/10.3397/in_2023_0674.

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In this study, the relationship among the shape and volume of the reverberation room, the sound absorption coefficient of the specimen, the frequency, and the obtained measurement results of the absorption coefficient in reverberation room are investigated by time-domain finite element method. First, finite element models are created for 11 types of reverberation rooms with different room shapes and volumes, and the models are analyzed in the case that all the boundaries are rigid walls and in the case that a measurement specimen is installed on one of the boundaries. Next, the absorption coefficients in each reverberation room are calculated and relationships among the results of the absorption coefficients, the shape and volume of the room, the absorption coefficients of the specimen and the frequency are shown. As the results, it is shown that relationship between absorption coefficient in reverberation room and absorption coefficient of specimen was varied by the absorption coefficient of the specimen and frequency more than room volume in heptahedral irregularly shaped reverberation room.

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ZIEGLER, Thomas. "Functions for noise reduction in acoustic standards: evaluating reverberation time, mean absorption coefficient, and a novel approach." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 8 (October 4, 2024): 3469–77. http://dx.doi.org/10.3397/in_2024_3332.

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Contemporary European acoustic standards utilize dimensioning functions based on either reverberation time or mean absorption coefficient. For spaces with the primary goal of noise reduction, achieving consistent overall sound pressure level (SPL) reduction, regardless of room sizes and shapes is evidently desirable. The conditions under which reverberation time and mean absorption coefficient approaches align with the objective of consistent SPL reduction are analyzed. Generally, both approaches fall short of achieving consistency in case of varying ground surface or room shape, i.e. length, width and height relations. Additionally, in large rooms, constant or room height-dependent reverberation time functions may lead to extensive absorption areas, complicating the installation of acoustical treatments and degrading their economic efficiency. A novel dimensioning function, providing consistent SPL reduction independently of room size and shape, is derived based on diffuse field theory. The novel function is multiplied by a linear function of room height and length, to alleviate accuracy limitations of diffuse field theory in case of varying room shapes. Finally, simulations systematically varying room sizes and shapes demonstrate that the novel dimensioning function significantly outperforms existing approaches in achieving consistent SPL reduction.

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Dokmanic, I., R. Parhizkar, A. Walther, Y. M. Lu, and M. Vetterli. "Acoustic echoes reveal room shape." Proceedings of the National Academy of Sciences 110, no. 30 (June 17, 2013): 12186–91. http://dx.doi.org/10.1073/pnas.1221464110.

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Dorward, Fiona M. C., and Ross H. Day. "Loss of 3-D Shape Constancy in Interior Spaces: The Basis of the Ames-Room Illusion." Perception 26, no. 6 (June 1997): 707–18. http://dx.doi.org/10.1068/p260707.

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The apparently rectangular form of the irregularly shaped Ames room is explained in terms of a loss of interior 3-D shape constancy consequent on viewing the room with one eye through a small specifically positioned aperture. In the absence of retinal disparity and motion parallax the appearance of the room is held to shift markedly toward the rectangular dimensions of its retinal image. Three experiments designed to test this explanation with a miniature (one-tenth size) version of the Ames room No 1 with the matched 2-D shape of the back wall and as an index of interior 3-D shape are reported. The experiments showed that interior constancy was almost fully restored with binocular viewing of the room (experiment 1). The effect with a ‘skeletal’ version of the room was about the same as that with the conventional version and was clearly evident when the back wall or its frame version was presented alone (experiment 2), and it varied according to whether the interior perspective corresponded with that of the Ames or a rectangular room (experiment 3). Experiment 3 also showed that a rectangular room is significantly distorted when the interior perspective accords with that of the Ames room. These outcomes are construed as supporting the loss-of-constancy explanation and as showing that the Ames-room effect is one of a class of illusions attributable to the absence of stimulus correlates that normally sustain visual shape constancy.

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Plumbley, M. D. "Hearing the shape of a room." Proceedings of the National Academy of Sciences 110, no. 30 (July 10, 2013): 12162–63. http://dx.doi.org/10.1073/pnas.1309932110.

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Jamaludin, J., and Purnama Salura. "Understanding the Meaning of Triangular Shape in Mosque Architecture in Indonesia." International Journal of Engineering & Technology 7, no. 4.7 (September 27, 2018): 458. http://dx.doi.org/10.14419/ijet.v7i4.7.27359.

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This paper discuss the formal and symbolical meaning of triangular shape of contemporary mosque architecture in Indonesia, with case study the mosques designed by Ridwan Kamil in Jakarta and in rest area Km 88 toll road between Jakarta and Bandung. There was a question in the public whether the triangular shape was adequate to be used as a mosque building. This paper propose answers with the analitical descriptive to understand the symbolical meaning of triangle shape used Sundanese community culture, one of Indonesian ethnics as representation. The paper used comparation and interpretation method to reveals the meaning of triangle shape in local culture and to find the connection to triangle shape in contemporary mosques architecture. The vernacular mosques in Indonesia known with their pyramid shape stacked roof with pointed roof in the peak. The pointed roof derived from the mountain that believed as the sacred place and used as symbol in the form of stacked roof of mosque. The finding of this paper is that triangular form can be accepted as mosque architectural form for the symbolical meaning derived from Sundanese culture. In the two mosques, this triangle shape enlarged and become praying room and as bridge to the God realm. The shape then achieved two purpose, as symbol of holy place and also fullfiled the function of praying room.

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Wang, Z. L., T. S. Ahmadi, J. M. Petroski, and M. A. El-Sayed. "Surface Structures of Shape-Controlled Platinum Nanoparticles." Microscopy and Microanalysis 3, S2 (August 1997): 429–30. http://dx.doi.org/10.1017/s143192760000903x.

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The selectivity and activities of platinum (Pt) particles strongly depend on their sizes and shapes. A technique has been recently reported for controlling the shapes and sizes of Pt particles [1]. Pt particles were prepared by bubbling Ar gas through the solution of K2PtCl4, and the Pt ions were reduced by flowing H2 gas through the solution. The shape control was performed by changing the ratio of the concentration of the capping polymer material to that of the platinum cations used in the reductive synthesis of colloidal particles in solution at room temperature [2]. High percentage of cubic, tetrahedral and octahedral particles have been prepared at room temperature, making it possible for studying the chemical activities of particles with different shapes and facets. This paper aims to study the surface structures of Pt particles prepared by the shape-controlling synthesis technique using high-resolution transmission electron microscopy (HRTEM).

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Imani, Yashifa Anindita, and Ratna Endah Santoso. "Perancangan Pelengkap Interior Dengan Inspirasi Interior Maroko (Studi Kasus Ruang VIP Marakez Cafe & Resto)." Ornamen 19, no. 2 (December 1, 2022): 160–69. http://dx.doi.org/10.33153/ornamen.v19i2.3827.

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Marakez Café & Resto is a restaurant that serves Middle Eastern specialties in Surakarta. Carrying the Café & Resto, Marakez has several spots and rooms, one of which is a VIP room provided for guests with facilities that can be considered exclusive compared to other rooms. The shape of this VIP room is actually very supportive, with a short sofa that allows customers to enjoy their food in a lesehan style, just like Middle Eastern culture, but unfortunately the interior elements in this room do not reflect the Moroccan feel as the name suggests. Based on the description that has been explained, it is necessary to design interior textile elements to build a Moroccan atmosphere because it has been supported by the shape of the room. This design uses the design method presented by Colin Clipson. The results of this design produce complementary interior styles that are based on ideas from the Moroccan interior, namely arch, zellij and mashrabiya. This design also combines two techniques in surface design, namely digital printing and embroidery, the product is an interior complement in the form of sofa upholstery, curtains and pillowcases.

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Tomiku, Reiji, Noriko Okamoto, Toru Otsuru, Shun Iwamoto, and Shoma Suzuki. "Finite element sound field analysis on measurement of absorption coefficient in a reverberation room -Relationships between inclination of walls and measurement results-." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 1 (August 1, 2021): 5571–77. http://dx.doi.org/10.3397/in-2021-3158.

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The absorption coefficients in a reverberation room are most representative measure for evaluating absorption performance of architectural materials. However, it is well known that measurement results of the coefficient vary according to a room shape of the measurement and area of the specimen. Numerical analyses based on wave acoustics are effective tools to investigate these factors on absorption coefficient measurement in reverberation room. In this study, sound fields for the measurement of absorption coefficient in reverberation room are analyzed by time domain finite element method (TDFEM). This study shows effectiveness of the analysis for investigation on causes of variation in the measurement results and improvement methods of the measurement. First, some measurement sound fields for absorption coefficient in reverberation rooms the walls of which are incline or decline are analyzed by the TDFEM. Next, reverberation times in each sound fields are calculated from the results obtained by TDFEM and the absorption coefficients are evaluated from the reverberation time of the room with and without specimen. Finally, the relationships among room shape, degree of inclination of the wall, the sound absorption coefficient of the specimen, frequencies and the measurement absorption coefficient are investigated.

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Sato, Gen, and Yusuke Ikeda. "Data-driven simulation for two-dimentional sound field considering room shape." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 2 (November 30, 2023): 6928–34. http://dx.doi.org/10.3397/in_2023_1034.

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Estimating the sound fields in a room using numerical simulations based on the wave equation typically requires extensive computation time. Consequently, several recent studies have explored the use of deep learning to reduce computation time. However, these studies have not adequately accounted for differences in room shapes, which significantly affect reverberation. In this study, we propose a novel approach that utilizes sound field simulation results for deep learning training data to estimate the sound field in rooms of various shapes. Our target data were obtained using the boundary element method, and we employed full-resolution residual networks as our deep learning models. Through our experiments, we evaluated the accuracy of our proposed method for sound field estimation as well as the computational time required.

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Feng, Xue, Li Min Zhao, and Xu Jun Mi. "Characristics of Shape Memory Composites Combined with Shape Memory Alloy and Shape Memory Polymer." Advanced Materials Research 705 (June 2013): 169–72. http://dx.doi.org/10.4028/www.scientific.net/amr.705.169.

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In order to develop high functionality of shape memory materials, the shape memory composites combined with TiNi wire and shape memory epoxy were prepared, and the mechanical and thermomechanical properties were studied. The results showed the addition of TiNi wire increased the Young modulus and breaking strength both at room temperature and at elevated temperature. The composites maintained the rates of shape fixity and shape recovery close to 100%. The maximum recovery stress increased with increasing TiNi wire volume fraction, and obtained almost 3 times of the matrix by adding 1vol% TiNi wire.

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Postma, Barteld N. J., and Brian F. G. Katz. "An archaeoacoustic study on shape: the case study of the Iffland Theatre’s history (1802–1817)." Acta Acustica 7 (2023): 54. http://dx.doi.org/10.1051/aacus/2023046.

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Previous studies have discussed six pre-Sabine quantifiable guidelines employed in room acoustic design: voice directivity, audience rake, “echo theory”, stage acoustics, reverberation, and length, width, and height ratios. Around the turn of the 18th century, these notions led to two shapes that were theoretically regarded optimal for rooms with acoustical demands: ellipse and semi-circle. The first of these shapes to be tested was the ellipse in the design for the Iffland Theatre (1802–1817). As the resulting acoustics were notoriously poor, contemporary architects and acousticians discussed the grounds for the failed acoustics as well as possible corrections. Multiple subsequent halls were also based on lessons learned from this acoustic failure. As part of this archaeoacoustics research, geometric acoustic numerical simulations were employed to estimate the actual and renovated room acoustic conditions. Three configurations of the hall have been reconstructed. Results show that the hall’s shape led to sound focusing and that the rounded proscenium arch likely induced echoes. Proposed solutions of the time to increase the scattering or absorption appear unlikely to have solved the observed acoustic problems.

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Fann, Kuang-Jau, and Hau Chi Hsu. "Hot Forming a V-Shaped Ni-Ti Shape Memory Alloy Wire." Key Engineering Materials 626 (August 2014): 377–82. http://dx.doi.org/10.4028/www.scientific.net/kem.626.377.

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Ni-Ti shape memory alloys have shape memory effect, that if they are deformed from martensitic phase state at a lower temperature, they will recover their original shape by heating them to austenitic phase state. To have them for an application using this shape memory effect, usually they undergo a constraint aging after plastic deformation. That is, they are fixed with tool set and together heat treated in a furnace after they are formed at room temperature. However a large load is needed to form them at room temperature. Thus, this study is aimed to lower the forming load by combining the forming and aging process together in a furnace at high temperature. In this study, a Ni-Ti shape memory alloy wire having a diameter of 0.63 mm is bent in a heated chamber at 450°C, 500°C, 550°C, and 600°C, respectively, by a V-shaped punch of 2 mm in radius to an angle of 60°, then held along with the die set at its dead center in the chamber for maximum one hour long, and then quenched in the water. All of the bent wires have the shape memory effect. That is, the wires recover their bent geometry once they are unbent at about 4°C and heated again at about 100°C. The experiment results showed that the bent wires can have the geometry accuracy as desired because of stress relaxation found in the process, which depends on the process temperature and duration. As a result, the higher the process temperature is and the longer the duration is, the better the accuracy of the formed wires is.

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Fann, Kuang-Jau, and Pao Min Huang. "Cold Bending a Ni-Ti Shape Memory Alloy Wire." Key Engineering Materials 661 (September 2015): 98–104. http://dx.doi.org/10.4028/www.scientific.net/kem.661.98.

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Because of being in possession of shape memory effect and superelasticity, Ni-Ti shape memory alloys have earned more intense gaze on the next generation applications. Conventionally, Ni-Ti shape memory alloys are manufactured by hot forming and constraint aging, which need a capital-intensive investment. To have a cost benefit getting rid of plenty of die sets, this study is aimed to form Ni-Ti shape memory alloys at room temperature and to age them at elevated temperature without any die sets. In this study, starting with solution treatments at various temperatures, which served as annealing process, Ni-rich Ni-Ti shape memory alloy wires were bent by V-shaped punches in different curvatures at room temperature. Subsequently, the wires were aged at different temperatures to have shape memory effect. As a result, springback was found after withdrawing the bending punch and further after the aging treatment as well. A higher solution treatment temperature or a smaller bending radius leads to a smaller springback, while a higher aging treatment temperature made a larger springback. This springback may be compensated by bending the wires in further larger curvatures to keep the shape accuracy as designed. To explore the shape memory effect, a reverse bending test was performed. It shows that all bent wires after aging had a shape recovery rate above 96.3% on average.

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Tlili, Ons, Hatem Mhiri, and Philippe Bournot. "Airflow induced by a room fire: Effect of roof shape and source location." International Journal of Thermal Sciences 90 (April 2015): 135–49. http://dx.doi.org/10.1016/j.ijthermalsci.2014.12.003.

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Zhao, Sipei, Xiaojun Qiu, Eva Cheng, Ian Burnett, Nick Williams, Jane Burry, and Mark Burry. "Sound quality inside small meeting rooms with different room shape and fine structures." Applied Acoustics 93 (June 2015): 65–74. http://dx.doi.org/10.1016/j.apacoust.2015.01.020.

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Jayawardena, Pavithra. "Still in the ‘Waiting Room’." Diaspora Studies 16, no. 3 (August 30, 2023): 287–310. http://dx.doi.org/10.1163/09763457-bja10055.

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Abstract Voting is predominantly understood through resident citizens’ viewpoints. Many resident citizens are nervous about the perceived consequences of voting by resident noncitizens. Although New Zealand is the only Western democratic host country that currently allows noncitizens to vote in national elections, citizens have concerns about how noncitizens use this right. This study investigates noncitizen voting from noncitizens’ viewpoints, by exploring the journeys and experiences of Sri Lankan immigrants in New Zealand. Based on 26 interviews with Sri Lankans in Auckland and Wellington, the study found two dimensions—temporal and transnational—that shape immigrants’ views in a different way from those of resident citizen voters. Building on Bridget Anderson’s methodological de-nationalism, the study suggests that we need to recognise the differences between resident citizens and resident noncitizens in order not to homogenise groups and wrongly assume that they share motives and behavioural and decision-making patterns.

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Abdul Gani Jamora Nasution, Annida Azhari Ritonga, Annisa Rahmadani, Friska Widya, and Miftahul Jannah. "MASJID RAYA AL-MASHUN MEDAN: Telaah Sejarah Sosial Keagamaan." Atmosfer: Jurnal Pendidikan, Bahasa, Sastra, Seni, Budaya, dan Sosial Humaniora 1, no. 1 (January 5, 2023): 62–71. http://dx.doi.org/10.59024/atmosfer.v1i1.32.

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The purpose of this study is how the history of the Al-Mashun Grand Mosque, the Al-Mashun Grand Mosque in the city of Medan in general has a mixed architectural form. It is divided into three: the main room, used as a place of prayer, the shape of the octagon is not equilateral. The left side (south-east) and the right side (north-east) of the main prayer room are surrounded by alleys (corridors). The shape of the dome follows the shape of Turkish architecture with a broken octagonal shape and an octagonal shaped plan with cylindrical columns at each of the corners of the marble. Research on MASJID RAYA AL- MASHUN MEDAN: A Study of socio-Religious History is relevant by using qualitative research because it meets the characteristics of qualitative research, especially in terms of in-depth data disclosure through interviews, observations and document studies of what informants do, how they carry out activities, what activities are carried out for and why they practice virtue or goodness (good morals) in the real reality.

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Zhang, Yinping, Xu Xu, Hongfa Di, Kunping Lin, and Rui Yang. "Experimental Study on the Thermal Performance of the Shape-Stabilized Phase Change Material Floor Used in Passive Solar Buildings." Journal of Solar Energy Engineering 128, no. 2 (July 25, 2005): 255–57. http://dx.doi.org/10.1115/1.2189866.

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The novel shape-stabilized phase change material (PCM) has the following salient features: large apparent specific heat for the phase change temperature region, suitable thermal conductivity, and the ability to keep the shape stabilized when it undergoes a phase change. In this technical brief, we put forward a kind of shape-stabilized PCM floor that is able to absorb solar radiation energy in the daytime and to release the heat at night in winter. The thermal performance of a prototype room using such a floor was studied. The experiments show that the mean indoor temperature of a room with the PCM floor is about 2°C higher than that of the room without a PCM floor, and the indoor temperature swing range is obviously minimized. Therefore, installing shape-stabilized PCM in a room may increase the degree of thermal comfort and reduce space heating energy consumption in winter. In addition, the experimental results provide data for modeling and simulation research for such PCM floor systems.

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Okamura, Yasuto, and Mitsuhiro Ura. "I am physically and personality-wise warmer when wearing round eyeglasses: Shape priming influences personality judgments and estimated temperature." Psychological Thought 12, no. 2 (December 9, 2019): 176–84. http://dx.doi.org/10.5964/psyct.v12i2.361.

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Shapes are considered to be related to different personality traits, and particularly, in terms of metaphorical associations, the round shape has been related to the warmth trait, and the square shape to the competence trait. The present study used a pre-post design to replicate these associations. Moreover, it was investigated whether round shapes enhanced the estimation of physical warmth as suggested by contemporary debates on cross-modal correspondences. The results indicated that the round shape increased the perception of warmth (p = .004) and the square shape enhanced the perception of competence (p = .025), which confirmed round-warm and square-competent associations. Furthermore, estimates of the room temperature were higher in the round condition, compared to the square condition (p = .023). The theoretical implications of these findings and directions for further research are discussed.

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Georlette, Véronique, Nicolas Vallois, Véronique Moeyaert, and Bruno Quoitin. "Enhancing Visible Light Communication Channel Estimation in Complex 3D Environments: An Open-Source Ray Tracing Simulation Framework." Informatics 11, no. 4 (October 31, 2024): 80. http://dx.doi.org/10.3390/informatics11040080.

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Estimating the optical power distribution in a room in order to assess the performance of a visible light communication (VLC) system is nothing new. It can be estimated using a Monte Carlo optical ray tracing algorithm that sums the contribution of each ray on the reception plane. For now, research has focused on rectangular parallelepipedic rooms with single-textured walls, when studying indoor applications. This article presents a new open-source simulator that answers the case of more complex rooms by analysing them using a 3D STL (stereolithography) model. This paper describes this new tool in detail, with the material used, the software architecture, the ray tracing algorithm, and validates it against the literature and presents new use cases. To the best of our knowledge, this simulator is the only free and open-source ray tracing analysis for complex 3D rooms for VLC research. In particular, this simulator is capable of studying any room shape, such as an octagon or an L-shape. The user has the opportunity to control the number of emitters, their orientation, and especially the number of rays emitted and reflected. The final results are detailed heat maps, enabling the visualization of the optical power distribution across any 3D room. This tool is innovative both visually (using 3D models) and mathematically (estimating the coverage of a VLC system).

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Mulyati, Ahda, Muhammad Najib, and A. M. Yamin Astha. "The Form of The Bajo Tribe’s House as an Adaptation Process Residential Environment." Devotion : Journal of Research and Community Service 5, no. 2 (February 21, 2024): 213–21. http://dx.doi.org/10.59188/devotion.v5i2.682.

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The Bajo tribe is a tribe that lives on the coast or islands. This is related to their livelihood, namely fishermen. Even though most already occupy land, fishermen still choose land close to the beach. The research aims to discover the essential things in their lives as a process of adaptation to the residential environment. The method used is naturalistic qualitative research by selecting several samples of residential houses on land and those that still choose land above water as cases to be analyzed. Even though there have been changes in occupying residential land, the Bajo tribe still has several adjustments regarding the placement of their homes, which are incredibly close to water or the coast. Residential houses on coastal land still have a back room facing the sea as the main room and are shaped like a house on stilts, while the front faces the road as a space for social interaction. Residential houses that occupy land and highways are the primary orientation and areas for social interaction. Although there is still a back room, it is not the main room. The shape of the building has changed both in structure and building materials. Almost all buildings on the land are permanent, consisting of several rooms, functioning as a bedroom, living room, etc.. In contrast, houses that occupy water land still use wood, bamboo, and woven sago leaf roofs and only have a onebedroom family room equipped with a back terrace.

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Fann, Kuang-Jau, and Chun-Hao Chang. "Deep Drawing of a Ni-Ti Shape Memory Alloy Sheet." MATEC Web of Conferences 207 (2018): 03020. http://dx.doi.org/10.1051/matecconf/201820703020.

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This study is aimed to investigate the properties of Ni-rich Ni-Ti shape memory alloy sheet parts during and after deep drawing process at room temperature, in which the metal is under plane tension-compression stress state. After annealing at different elevated temperature, shape memory alloy sheet is formed at room temperature by a circular cylindrical punch in different forming depths. Thereafter the deep drawn sheet part is subjected to aging for shape memory treatment. A free shape recovery test is further conducted onto the deep drawn shape memory alloy sheet part. As a result, the sheet metal has austenitic phase at room temperature, which shows superelasticity. Too small forming amount causes severe springback and the form of the deep drawn sheet part is very hard to detect with the naked eye. Only if a forming amount greater than or equal to 4 mm is applied, a form can be achieved on to the sheet part. The subsequent aging shape memory treatment can induce further springback of the deep drawn sheet part. The higher the temperature of the previous annealing, the less the springback by aging. The free shape recovery test shows that the deep drawn sheet part only undergoing annealing without shape memory treatment still possesses shape memory effect. Nevertheless, the deep drawn sheet part aged for shape memory can show a better shape recovery.

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Dehbi, Y., N. Gojayeva, A. Pickert, J. H. Haunert, and L. Plümer. "ROOM SHAPES AND FUNCTIONAL USES PREDICTED FROM SPARSE DATA." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences IV-4 (September 19, 2018): 33–40. http://dx.doi.org/10.5194/isprs-annals-iv-4-33-2018.

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<p><strong>Abstract.</strong> Many researchers used expensive 3D laser scanning techniques to derive indoor models. Few papers describe the derivation of indoor models based on sparse data such as footprints. They assume that floorplans and rooms are rather rectangular and that information on functional use is given. This paper addresses the automatic learning of a classifier which predicts the functional use of housing rooms. The classification is based on features which are widely available such as room areas and orientation. These features are extracted from an extensive database of annotated rooms. A Bayesian classifier is applied which delivers probabilities of competing class hypotheses. In a second step, functional uses are used to predict the shape of the rooms in a further classification.</p>

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Anisuzzaman, D. M., Md Hosne Al Walid, and A. F. M. Saifuddin Saif. "Online Trial Room based on Human Body Shape Detection." International Journal of Image, Graphics and Signal Processing 11, no. 2 (February 8, 2019): 21–29. http://dx.doi.org/10.5815/ijigsp.2019.02.03.

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Lee, Jung-Yong, Youngjoon Kim, Seongwook Lee, Wanjei Cho, and Seong-Cheol Kim. "Estimation of Room Shape Using Radio Propagation Channel Analysis." IEEE Sensors Journal 19, no. 24 (December 15, 2019): 12316–24. http://dx.doi.org/10.1109/jsen.2019.2940247.

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Broerse, Jack, Roderick Ashton, and Craig Shaw. "The Apparent Shape of Afterimages in the Ames Room." Perception 21, no. 2 (April 1992): 261–68. http://dx.doi.org/10.1068/p210261.

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When observers project afterimages of circular patterns onto a surface slanting away from them the images are reported as being oval in shape. In this paper it is reported that this does not occur when similar afterimages are projected onto the slanting rear wall of an Ames room. Instead of appearing as ovals, the afterimages remain circular. It appears as though the actually-slanted rear wall of the room not only looks as if it is normal to the line of vision, but also that it functions as if it was in such an orientation as far as a projection surface for afterimages is concerned. While these results are consistent with Emmert's law and with traditional accounts of shape and size constancy, they raise once again the age-old issue of whether the ‘image on the retina’ constitutes an object of perception that can be described in terms of its shape or size.

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Lee, Jung-Yong, and Seong-Cheol Kim. "Estimation of Room Shape Using Power Delay Profile Analysis." Journal of Korean Institute of Communications and Information Sciences 43, no. 5 (May 31, 2018): 847–49. http://dx.doi.org/10.7840/kics.2018.43.5.847.

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Chou, Nam Hawn, Xianglin Ke, Peter Schiffer, and Raymond E. Schaak. "Room-Temperature Chemical Synthesis of Shape-Controlled Indium Nanoparticles." Journal of the American Chemical Society 130, no. 26 (July 2008): 8140–41. http://dx.doi.org/10.1021/ja801949c.

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Chaudhuri, Sandeep K., Mohsin Sajjad, and Krishna C. Mandal. "Pulse-shape analysis in Cd0.9Zn0.1Te0.98Se0.02 room-temperature radiation detectors." Applied Physics Letters 116, no. 16 (April 20, 2020): 162107. http://dx.doi.org/10.1063/5.0003646.

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Kondrashov, V., A. Loupilov, and V. Ivanov. "Pulse shape discrimination system for room-temperature semiconductor detectors." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 458, no. 1-2 (February 2001): 580–84. http://dx.doi.org/10.1016/s0168-9002(00)00919-0.

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Boutin, Mireille, and Gregor Kemper. "A Drone Can Hear the Shape of a Room." SIAM Journal on Applied Algebra and Geometry 4, no. 1 (January 2020): 123–40. http://dx.doi.org/10.1137/19m1248534.

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Hoshi, Kazuma, and Toshiki Hanyu. "Theoretical Modeling of Room Shape for Ray Tracing Simulation." Building Acoustics 21, no. 1 (March 2014): 21–29. http://dx.doi.org/10.1260/1351-010x.21.1.21.

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Qiu, Wenhao, and Gang Wang. "DRR-based acoustic detection model for estimating room shape." Applied Acoustics 227 (January 2025): 110216. http://dx.doi.org/10.1016/j.apacoust.2024.110216.

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Robertson, Jaimee M., Amir H. Torbati, Erika D. Rodriguez, Yiqi Mao, Richard M. Baker, H. Jerry Qi, and Patrick T. Mather. "Mechanically programmed shape change in laminated elastomeric composites." Soft Matter 11, no. 28 (2015): 5754–64. http://dx.doi.org/10.1039/c5sm01004g.

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Mi, Xue, Xiao-Ming Bai, Pan Tang, Hai Xie, Jin-Fang Peng, and Min-Hao Zhu. "The role of the third body in the fretting wear of 690 alloy." International Journal of Modern Physics B 34, no. 09 (April 10, 2020): 2050077. http://dx.doi.org/10.1142/s0217979220500770.

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In this work, to investigate the role of the third body in the fretting behavior of 690 alloy, the fretting capabilities of 690 alloy against 405 stainless steel have been performed under various experimental conditions. The testing normal force and temperature varied from 10 N to 40 N and from room-temperature (RT) to [Formula: see text]C, respectively, at 5 Hz and 200 [Formula: see text]m. The results demonstrated that the profile shape of wear scar was dependent on the action of the wear particles. Three typical profile shapes were examined in this work: “U” shape, “W” shape and “M” shape. The balance of the formation and ejection of wear particles led to a steady value of the coefficient of friction (COF) and friction energy.

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Mannan, Abdul, Afifah Harisah, Ria Wikantari, and Moh Mocshen Sir. "Significant Historical Buildings in Vernacular Settlements: Changing Characteristics of Achmad Noe'man's Mosques in Indonesia." International Society for the Study of Vernacular Settlements 11, no. 6 (June 1, 2024): 134–47. http://dx.doi.org/10.61275/isvsej-2024-11-06-08.

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Mosque is the center of Muslim life and the center of Islamic culture. It is more than what people usually think of as a place of prostration and is more so in the vernacular settlements. In fact, the mosque is a source of many activities. However, each mosque building has its own characteristics according to the ideas of the designer. There are many such different mosques in Indonesia and the characteristics of the Achmad Noe'man mosque in the period 1964-2010 are thus unique. This research examines these mosques in order to classify the types of mosques according to Achmad Noeman and to identify the similarities in characteristics as well as consistency and diversity. It unearths the factors related to changes in these characteristics. This research uses descriptive and exploratory methods to reveal the characteristics of the mosque. The findings show that the mosque buildings are undergoing changes with the shape of the dome roof, the main room or prayer room being free of columns/poles, the use of basic geometric shapes such as cubes, blocks, the use of stained-glass elements and openwork rosters as decorative ornaments on the walls and openings of the building walls. The building is dominated by a square shape to maximize space efficiency, formed from a composition of massive planes and transparent walls.

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Mulyana, Dadang Iskandar, and Tiyas Aria Pratiwi. "Optimasi Pengukuran Dinamis dari Visualisasi Model Ruangan 3D Menggunakan Sensor LiDAR dan Framework RoomPlan." Jurnal Indonesia : Manajemen Informatika dan Komunikasi 5, no. 3 (September 20, 2024): 2623–33. http://dx.doi.org/10.35870/jimik.v5i3.950.

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Utilizing limited space to be more functional and aesthetic, such as adding furniture or using it as gardening space, can be achieved through effective room mapping. However, manual mapping methods have limitations such as inaccurate measurements, time efficiency, and also lack of room visualization. In this modern era, robotics technology has been widely applied in everyday life, one of which is the use of LiDAR sensors for room mapping. This paper discusses a room mapping system using a mobile application that utilizes LiDAR sensors. The mapping process is carried out by scanning the area to be mapped and rotating the area 360 degrees. The result of this mapping is a scanned 3D model of the room, which allows measurements from every side of the room. Research shows that the mapping results from the software created are similar in shape to actual field conditions. In addition, the measurement accuracy only has a small difference of 0.2%. It is hoped that this research can make it easier for humans to map rooms and make better use of limited space.

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Fang, Yin, Sin-Yen Leo, Yongliang Ni, Junyu Wang, Bingchen Wang, Long Yu, Zhe Dong, et al. "Reconfigurable Photonic Crystals Enabled by Multistimuli-Responsive Shape Memory Polymers Possessing Room Temperature Shape Processability." ACS Applied Materials & Interfaces 9, no. 6 (February 2, 2017): 5457–67. http://dx.doi.org/10.1021/acsami.6b13634.

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Cornwell, Erin York, and Valerie P. Hans. "Representation through Participation: A Multilevel Analysis of Jury Deliberations." Law & Society Review 45, no. 3 (September 2011): 667–98. http://dx.doi.org/10.1111/j.1540-5893.2011.00447.x.

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Fully participatory jury deliberations figure prominently in the idealized view of the American jury system, where balanced participation among diverse jurors leads to more accurate fact‐finding and instills public confidence in the legal system. However, research more than 50 years ago indicated that jury‐room interactions are shaped by social status, with upper‐class men participating more than their lower‐class and female counterparts. The effects of social status on juror participation have been examined only sporadically since then, and rarely with actual jurors. We utilize data from 2,189 criminal jurors serving on 302 juries in four jurisdictions to consider whether—and in what conditions—participation in jury deliberations differs across social groups. Our results indicate the continuing importance of social status in structuring jury‐room interactions, but also reveal some surprising patterns with respect to race and gender that depart from earlier research. We also find that contextual factors including location, case characteristics, and faction size shape the relationship between social status and participation. We conclude with a critical discussion of our results and urge other researchers to take into account contextual factors when examining how individual juror characteristics shape what happens inside the jury room.

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Zhu, Qiaoxi, and Paul Williams. "Experimental study on the sound transmission loss suite at the University of Technology Sydney." Journal of the Acoustical Society of America 154, no. 4_supplement (October 1, 2023): A127. http://dx.doi.org/10.1121/10.0023006.

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Sound transmission loss suites are essential testing facilities for measuring the sound insulation properties of building elements and assessing noise attenuation. However, inconsistencies in test results can arise due to variations in the size, shape, and construction of test rooms across different laboratories, with biases introduced by the room acoustics or acoustical environment of the facility itself. To evaluate the reliability of such testing, we conducted an experimental study on the sound transmission loss suite at the University of Technology Sydney. Our investigation focused on three key factors: estimating the maximum achievable sound reduction using a heavyweight wall installed at the test aperture on the source room side, testing the effectiveness of vibration isolation between reverberation rooms, and assessing the decoupling of the sound field within the reverberation rooms.

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Khabaz, Rahim. "Estimation of scattering contribution in the calibration of neutron devices with radionuclide sources in rooms of different sizes." Nuclear Technology and Radiation Protection 30, no. 1 (2015): 47–54. http://dx.doi.org/10.2298/ntrp1501047k.

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Calibrations of neutron devices used in area monitoring are often performed by radionuclide neutron sources. Device readings increase due to neutrons scattered by the surroundings and the air. The influence of said scattering effects have been investigated in this paper by performing Monte Carlo simulations for ten different radionuclide neutron sources inside several sizes of concrete wall spherical rooms (Rsp = 200 to 1500 cm). In order to obtain the parameters that relate the additional contribution from scattered neutrons, calculations using a polynomial fit model were evaluated. Obtained results show that the contribution of scattering is roughly independent of the geometric shape of the calibration room. The parameter that relates the room-return scattering has been fitted in terms of the spherical room radius, so as to reasonably accurately estimate the scattering value for each radionuclide neutron source in any geometry of the calibration room.

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Hosoda, Hideki, Yusuke Fukui, Tomonari Inamura, Kenji Wakashima, and Shuichi Miyazaki. "Mechanical Properties of Ti-Nb Biomedical Shape Memory Alloys Containing 13- and 14-Group Elements." Materials Science Forum 475-479 (January 2005): 2329–32. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.2329.

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In order to replace Ti-Ni shape memory alloys, new biomedical shape memory alloys have been developed which are composed of beta titanium and nontoxic elements only. In this paper, experimental results of mechanical and shape memory properties are reported for the Ni-free Ti-18mol%Nb shape memory alloys containing 3mol% of 13-group and 14-group ternary elements in the periodic table. The ternary elements selected are Al, Ga, In, Ge and Sn. It was found that the solution treated alloys exhibit good shape memory effect but almost no pseudoelasticity at room temperature. Ultimate tensile strength and elongation to failure at room temperature are ranged from 250 to 710MPa and from 13 to 21%, respectively, depending on the kind of ternary elements. Effect of solution hardening on strength is discussed.

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Staub, Thomas. "Decorative effects and room functions. The evidence of thresholds studied in the residential quarters of Insula V 1, Pompeii." Opuscula. Annual of the Swedish Institutes at Athens and Rome 2 (November 2009): 205–18. http://dx.doi.org/10.30549/opathrom-02-11.

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The present paper discusses the use of different types of thresholds in the Pompeian domestic architecture. The considerations proceed from observations made in three larger dwellings in Insula V 1 in Pompeii, the town quarter, which is under current investigation by the Swedish Pompeii Project. The thresholds are considered in the contexts of corresponding pavements and wall decorations as well as that of the related rooms. Differences will be studied between the areas around the atria and the zones around the peristyles. They indicate that while the thresholds around the atrium are of a homogeneous character, defined by the shape and decorations of the central room, the ones around the peristyle are defined by the decorations and dignity of each particular room opening up towards the central entity. It seems also that both the material used and the shape of the thresholds could be dependent on the taste defining the decorations, either of the floor or of the walls.

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Oktavia Skb, Sandra, Cut Azmah Fithri, Yenny Novianti, and Erna Muliana. "Study of Women's Space in Bagas Godang In the Village of Wek II Batang Toru South Tapanuli." Proceedings of Malikussaleh International Conference on Multidisciplinary Studies (MICoMS) 3 (January 14, 2023): 00018. http://dx.doi.org/10.29103/micoms.v3i.176.

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The traditional house in South Tapanuli is an architecture with a distinctive shape with a type of house on stilts. One such building is bagas godang. This building functions as a residence or residence of the king, also functions as a place for holding traditional ceremonies, and as a place of protection for members of the community. The women's room in the godang bagas is a place for women's activities. Currently the space has changed its function. This study aims to re-describe women's space as a private space inside the godang bagas. The method used in this study is descriptive qualitative by way of observation, interviews and documentation. The results obtained are that several rooms inside the godang bagas are women's rooms. These spaces include a bedroom, kitchen and circulation room. This space is used by women in their daily activities. The women's room is very special in the house, a space that makes women feel at home and comfortable.

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Muarat, Nurul Farhanah, Mohamed Hussein, Raja Ishak Raja Hamzah, Z. A. B. Ahmad, Maziah Mohamad, Mohd Zarhamdy Md Zain, and Norasikin Mat Isa. "Adjustable Acoustical Performance Based on Deformable Origamic Shapes: A Preliminary Experimental Investigation." Applied Mechanics and Materials 660 (October 2014): 526–30. http://dx.doi.org/10.4028/www.scientific.net/amm.660.526.

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This paper describes a preliminary investigation on the possible use of deformable origamic shapes as a technique to provide adjustable acoustical performance in multi-purpose hall. The term ‘deformable’ means that the origamic shape undergoes deformation which automatically resulted into the change of its geometrical configurations. The experimental investigation has been carried out on three types of origamic shapes with several geometrical configurations. The measurement tests were conducted in a reverberation room and in accordance to ISO 354:2003 Measurement of Sound Absorption Coefficients in a Reverberation Room. Findings from the preliminary investigation show good trends indicating that the origamic shapes have the capability of adjusting the sound absorption coefficients by varying their geometrical configurations. Following those results, future works with details investigation will be undertaken as to validate the preliminary results.

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Alahmer, Ali. "Demonstrate for Rotating C-Shape Magnetic Refrigeration near Room Temperature." Applied Mechanics and Materials 704 (December 2014): 154–58. http://dx.doi.org/10.4028/www.scientific.net/amm.704.154.

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Magnetic refrigeration is a new promised technology based on a distinctive property magnetocaloric effect (MCE) of some materials such as gadolinium. This manuscript demonstrates a rotating C-shape magnetic refrigeration using finite element magnetic method (FEMM). The proposed configuration can be produced a mean flux density about 0.6 T in the high flux region and a value of 0.02 T in the low flux density when the magnetocaloric material was magnetized and demagnetized respectively. Also a C-shape rotating magnetic refrigeration model was successfully built and tested in Tafila Technical University at mechanical engineering laboratories. A 3 °C of temperature difference between a hot and cold end of heat exchangers was achieved.

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Milner, Joseph R., and Robert J. Bernhard. "An acoustical shape optimization study of the nonrectangular reverberation room." Journal of the Acoustical Society of America 80, S1 (December 1986): S11. http://dx.doi.org/10.1121/1.2023606.

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Klosak, Andrzej K., and Anders C. Gade. "Relationship between room shape and acoustics of rectangular concert halls." Journal of the Acoustical Society of America 123, no. 5 (May 2008): 3199. http://dx.doi.org/10.1121/1.2933354.

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Liao, Fang, Zhou-Feng Wang, and Xing-Qi Hu. "Shape-controllable synthesis of dendritic silver nanostructures at room temperature." Colloid Journal 73, no. 4 (August 2011): 504–8. http://dx.doi.org/10.1134/s1061933x11040053.

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Journal articles on the topic 'Room Shape'

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