Journal articles: 'Through the wall'

1

Knighton, Ted. "Through the Wall." Film International 17, no. 3 (September 1, 2019): 64–67. http://dx.doi.org/10.1386/fiin.17.3.64_1.

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Wang, Fangfang, Yerong Zhang, and Huamei Zhang. "Through-Wall Detection with LS-SVM under Unknown Wall Characteristics." International Journal of Antennas and Propagation 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/2790782.

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One of the main challenges in through-wall imaging (TWI) is the presence of the walls, whose returns tend to obscure the target behind the walls and must be considered and computed in the imaging procedure. In this paper, a two-step procedure for the through-wall detection is proposed. Firstly, an effective clutter mitigation method based on singular value decomposition (SVD) is used. It does not require knowledge of the background scene or rely on accurate modeling and estimation of wall parameters. Then, TWI problem is cast as a regression one and solved by means of least-squares support vector machine (LS-SVM). The complex scattering process due to the presence of the walls is automatically included in the nonlinear relationship between the feature vector extracted from the target scattered fields and the position of the target. The relationship is obtained through a training phase using LS-SVM. Simulated results show that the proposed approach is effective. We also analyze the impacts of training samples and signal-to-noise ratio (SNR) on test detection accuracy. Simulated results reveal that the proposed LS-SVM based approach can provide comparative performances in terms of accuracy, convergence, robustness, and generalization in comparison with the support vector machine (SVM) based approach.

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Taylor, Dov. "Seeing through the Wall." Tikkun 32, no. 4 (2017): 9–11. http://dx.doi.org/10.1215/08879982-4252929.

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Feen-Calligan, Holly. "Breaking through the Wall." About Campus: Enriching the Student Learning Experience 6, no. 1 (January 2001): 31–32. http://dx.doi.org/10.1177/108648220100600108.

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Wang, Yuliang, Congcong Wang, and Zhixing Cao. "Experimental Study on Axial Compression of an Insulating Layer through a Composite Shear Wall." Advances in Civil Engineering 2021 (June 23, 2021): 1–9. http://dx.doi.org/10.1155/2021/3694838.

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Based on the research of composite walls at home and abroad, a construction method of continuous opening of the insulation layer in the specimen is proposed. In the edge component of the composite wall, the insulation layer should be thinned appropriately, the concrete on both sides should be thickened correspondingly, and U-shaped reinforcement should be used instead of stirrup. To study its axial compression test performance, five 1/2 scale composite shear wall specimens are tested under axial compression, including three composite wall specimens and two solid wall contrast specimens. The failure mode, load-bearing performance, deformation performance, and the collaborative work performance of wall are analyzed. The results show that the failure characteristics of the composite shear wall are similar to those of the solid wall, with splitting cracks at the corners and inverted triangular conical splitting at the top of the wall along the wall height direction, with no obvious bulging in the middle of the wall. The tie action of the ribs makes the concrete walls on both sides of the composite shear wall have good integrity and cooperative performance; the installation of the thermal insulation layer increases the overall thickness of the wall, improves the stability of the composite wall, and makes the composite wall axially compressed. The bearing capacity is not significantly reduced compared to the solid walls. Finally, according to the test results, the calculation formula of axial compression bearing capacity of composite shear wall is given, which provides the basis for the formulation of the code and engineering application.

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Jifang, Zhao, Jin Liangnian, and Liu Qinghua. "Through-the-wall radar sparse imaging for building walls." Journal of Engineering 2019, no. 21 (November 1, 2019): 7403–5. http://dx.doi.org/10.1049/joe.2019.0541.

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Tokuda, Shigefumi, Takeshi Unemura, and Marie Oshima. "HEMODYNAMIC SIMULATION OF MASS TRANSPORT THROUGH THE ARTERIAL WALL WITH MULTI-LAYERED WALL MODEL(1D1 Cardiovascular Mechanics I)." Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2007.3 (2007): S57. http://dx.doi.org/10.1299/jsmeapbio.2007.3.s57.

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Solimene, R., F. Soldovieri, G. Prisco, and R. Pierri. "Three-Dimensional Through-Wall Imaging Under Ambiguous Wall Parameters." IEEE Transactions on Geoscience and Remote Sensing 47, no. 5 (May 2009): 1310–17. http://dx.doi.org/10.1109/tgrs.2009.2012698.

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Wang, Fang-Fang, Ye-Rong Zhang, and Hua-Mei Zhang. "Approach for through-wall detection under unknown wall characteristics." Journal of Applied Remote Sensing 10, no. 3 (August 15, 2016): 035016. http://dx.doi.org/10.1117/1.jrs.10.035016.

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Sobota, Tomasz, and Jan Taler. "Determination of heat losses through building partitions." MATEC Web of Conferences 240 (2018): 05030. http://dx.doi.org/10.1051/matecconf/201824005030.

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An numerical algorithm which can be use to calculate heat stream density transferred through wall with air void is presented . Some results of influence of thermal isolation on heat stream density transferred through the wall are presented too. The algorithm shown in this paper has general character and can be use to calculation loss of heat through the walls of block flats, furnaces , cold rooms and others objects and devices.

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Palmer, Jason, and Nicola Terry. "Looking Critically at Heat Loss through Party Walls." Sustainability 14, no. 5 (March 6, 2022): 3072. http://dx.doi.org/10.3390/su14053072.

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Heat loss through party walls to outside (not the neighbouring dwelling) has received considerable attention in the UK, and this was flagged as a serious omission from the UK Building Regulations in 2010-12. There was evidence of significant heat loss between adjoined terraced or semi-detached new homes, which was increasingly important as heat loss from other parts of dwellings was being reduced. As a result, Building Regulations were changed so that other parts of the building envelope had to be improved in new homes to compensate for heat loss through the party wall. However, this empirical work based on measuring heat loss through the party walls of 55 UK dwellings indicates that fears about high heat loss through party walls may have been exaggerated. While a minority of dwellings (less than 10%) do suffer from a “thermal bypass” through the party wall, for the vast majority of existing homes with party walls, heat loss through the party wall is minimal. There may be a case for revising UK Building Regulations to reflect this new evidence, and for re-directing the efforts aimed at reducing heat loss through party walls towards other opportunities to improve the energy efficiency of dwellings.

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Mayank, Kaushik, Phartyal Deepanshu, Dubey Sonam, P. M. Menghal, and Suri Naveen. "Through the wall imaging radar." i-manager’s Journal on Image Processing 9, no. 1 (2022): 11. http://dx.doi.org/10.26634/jip.9.1.18592.

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In a Counter Insurgency/Counter Terrorism environment, where the life of a soldier is of paramount importance at times of uncertainty while carrying out house clearing drills. It is imperative that they would come across situations wherein there is a presence of a hostile target inside a closed room/house. This research paper encompasses “Through the wall target detection, classification, and range estimation”. Using a two port Vector Network Analyzer (VNA) as a power source, which was initially in the frequency domain was converted to time domain format for better assimilation of target detection and classification. One port of VNA utilized as transmitter and other as receiver, where two dual ridged horn antennas were placed. Also, by carrying out screen mirroring of the VNA with the laptop, the display as well as control of VNA, could be done using a laptop. The experimental results achieved were detection of stationary object/ stationary human being, moving human being, differentiation between stationary human & moving human and also differentiation between armed and unarmed personnel. These results achieved were based on the peak detection and display on the VNA screen/laptop. To achieve algorithm-based detection and classification, signal processing is required to be done depending on the peak detected and also an algorithm for real-time data transfer from VNA to the laptop.

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Efimov, Albert R., David I. Dubrovsky, and Philipp M. Matveev. "Walking Through the Turing Wall." IFAC-PapersOnLine 54, no. 13 (2021): 215–20. http://dx.doi.org/10.1016/j.ifacol.2021.10.448.

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Juárez-Moreno, Karla, Rafaela Erices, Adriana S. Beltran, Sabine Stolzenburg, Mauricio Cuello-Fredes, Gareth I. Owen, Haili Qian, and Pilar Blancafort. "Breaking through an epigenetic wall." Epigenetics 8, no. 2 (February 2013): 164–76. http://dx.doi.org/10.4161/epi.23503.

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Arumugam, Darmindra D. "Through-the-Wall Magnetoquasistatic Ranging." IEEE Antennas and Wireless Propagation Letters 16 (2017): 1439–42. http://dx.doi.org/10.1109/lawp.2016.2641421.

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Muqaibel, A., A. Safaai-Jazi, A. Bayram, A. M. Attiya, and S. M. Riad. "Ultrawideband through-the-wall propagation." IEE Proceedings - Microwaves, Antennas and Propagation 152, no. 6 (2005): 581. http://dx.doi.org/10.1049/ip-map:20050092.

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17

Scott, Howard Eric. "Through the wall of literacy." Education + Training 60, no. 6 (July 9, 2018): 569–83. http://dx.doi.org/10.1108/et-03-2018-0054.

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Purpose The purpose of this paper is to explain how peripheral participants contributed to and became more central members of a community of practice based in a social network that was used to support mobile learning approaches among post-compulsory education students. The notion was that in inducing participation through pedagogical strategies, individualised online presence could be increased that would support studentship, confidence and literacy improvements in participants who are normally apprehensive about online and formal learning contexts. Design/methodology/approach The network was used by four separate groups of 16-19 aged students and 19+ aged adults, with a constant comparison made of their activity and communication. A content analysis was made of students’ posts to the network, with the codes sorted thematically to examine how students used the network to support themselves and each other. Interviews were held with students across the two years to explore perceptions of the network and the community. Findings Peripheral participants navigate through ontological thresholds online to develop individual identity presence online. Increased communicated actions (“posts”) improves participation overall and the interaction of members in terms of developing a community of practice online. The results of communicated actions posted in visible online spaces improved the literacy control and willingness to publish content created by those peripheral participants. Research limitations/implications The study is taken from a small sample (approx. 100 students) in a case study comparing results across four different groups in an English Further Education college. Most of the positive results in terms of an impact being made on their literacy capability was found among adult students, as opposed to students in two 16-19 aged groups. Research implications identify hypothetical stages of identity presence online for reluctant and peripheral participants. This shows the potential of students to be induced to openly participate in visible contexts that can support further identity development. Practical implications The implications show that blended learning is necessary to improve the opportunity for mobile learning to happen. Blended learning in itself is dependent on and simultaneously improves group cohesion of learners in online communities. When students develop a momentum of engagement (and residence within) networks they exploit further technological features and functions and become more co-operative as a group, potentially reducing teacher presence. Learning activities need to support the peripheral participants in discrete and purposeful ways, usually achieved through personalised supported learning tasks. The notion and attention paid to the difficulties in bringing peripheral participants online has implications for the prescription of online learning as a form of delivery, especially among FE students. Social implications This paper problematizes the notion of peripheral participants and suggests they are overlooked in consideration of learning delivery, design and environments. Peripheral participants may be considered to be students who are at risk of not being involved in social organisations, such as communities, and vulnerable to diminished support, for instance through the withdrawal of face-to-face learning opportunities at the expense of online learning. Originality/value This paper makes a small contribution to theories surrounding communities of practice and online learning. By deliberately focusing on a population marginalised in current educational debate, it problematizes the growing prescription of online learning as a mode of delivery by taking the perspectives and experiences of peripheral participants on board.

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Braselton, James, John Rafter, Patricia Humphrey, and Martha Abell. "Randomly walking through Wall Street." Mathematics and Computers in Simulation 49, no. 4-5 (September 1999): 297–318. http://dx.doi.org/10.1016/s0378-4754(99)00040-3.

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Martinus, Frank. "Creole Identity through Chinese Wall." Matatu 27, no. 1 (December 7, 2003): 151–65. http://dx.doi.org/10.1163/18757421-90000449.

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Ashby, John M. "Break Through the Database “Wall”." TechTrends 33, no. 2 (March 1988): 33–38. http://dx.doi.org/10.1007/bf02771227.

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Jin, Tian, and Alexander Yarovoy. "A Through-the-Wall Radar Imaging Method Based on a Realistic Model." International Journal of Antennas and Propagation 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/539510.

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An image focusing method based on a realistic model for a wall is proposed for through-the-wall radar imaging using a multiple-input multiple-output array. A technique to estimate the wall parameters (i.e., position, thickness, and permittivity) from the radar returns is developed and tested. The estimated wall properties are used in the developed penetrating image formation to form images. The penetrating image formation developed is computationally efficient to realize real-time imaging, which does not depend on refraction points. The through-the-wall imaging method is validated on simulated and real data. It is shown that the proposed method provides high localization accuracy of targets concealed behind walls.

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Sun, X., B. Y. Lu, T. Jin, and Z. M. Zhou. "Wall clutter mitigation in through-the-wall MIMO radar application." Journal of Electromagnetic Waves and Applications 26, no. 17-18 (October 8, 2012): 2256–66. http://dx.doi.org/10.1080/09205071.2012.732554.

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DHANAK, M. R., and C. SI. "On reduction of turbulent wall friction through spanwise wall oscillations." Journal of Fluid Mechanics 383 (March 25, 1999): 175–95. http://dx.doi.org/10.1017/s0022112098003784.

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A model for turbulent skin friction, proposed by Orlandi & Jimenez, involving consideration of quasi-streamwise vortices in the cross-stream plane, is used to study the effect on the skin friction of oscillating the surface beneath the boundary layer in the spanwise direction. Using an exact solution of the Navier–Stokes equations, it is shown that the interaction between evolving, axially stretched, streamwise vortices and a modified Stokes layer on the oscillating surface beneath, leads to reduction in the skin friction, the Reynolds stress and the rate of production of kinetic energy, consistent with predictions based on experiments and direct numerical simulations.

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Zhu, Xiaojue, Roberto Verzicco, and Detlef Lohse. "Disentangling the origins of torque enhancement through wall roughness in Taylor–Couette turbulence." Journal of Fluid Mechanics 812 (December 22, 2016): 279–93. http://dx.doi.org/10.1017/jfm.2016.815.

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Direct numerical simulations (DNS) are performed to analyse the global transport properties of turbulent Taylor–Couette flow with inner rough wall up to Taylor number$Ta=10^{10}$. The dimensionless torque $Nu_{\unicode[STIX]{x1D714}}$ shows an effective scaling of $Nu_{\unicode[STIX]{x1D714}}\propto Ta^{0.42\pm 0.01}$, which is steeper than the ultimate regime effective scaling $Nu_{\unicode[STIX]{x1D714}}\propto Ta^{0.38}$ seen for smooth inner and outer walls. It is found that at the inner rough wall, the dominant contribution to the torque comes from the pressure forces on the radial faces of the rough elements; while viscous shear stresses on the rough surfaces contribute little to $Nu_{\unicode[STIX]{x1D714}}$. Thus, the log layer close to the rough wall depends on the roughness length scale, rather than on the viscous length scale. We then separate the torque contributed from the smooth inner wall and the rough outer wall. It is found that the smooth wall torque scaling follows $Nu_{s}\propto Ta_{s}^{0.38\pm 0.01}$, in excellent agreement with the case where both walls are smooth. In contrast, the rough wall torque scaling follows $Nu_{r}\propto Ta_{r}^{0.47\pm 0.03}$, very close to the pure ultimate regime scaling $Nu_{\unicode[STIX]{x1D714}}\propto Ta^{1/2}$. The energy dissipation rate at the wall of an inner rough cylinder decreases significantly as a consequence of the wall shear stress reduction caused by the flow separation at the rough elements. On the other hand, the latter shed vortices in the bulk that are transported towards the outer cylinder and dissipated. Compared to the purely smooth case, the inner wall roughness renders the system more bulk dominated and thus increases the effective scaling exponent.

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Sippawit, Noppawit, and Thananchai Leephakpreeda. "A study of sensing heat flow through thermal walls by using thermoelectric module." Thermal Science 19, no. 5 (2015): 1497–505. http://dx.doi.org/10.2298/tsci121010044s.

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Demands on heat flow detection at a plane wall via a thermoelectric module have drawn researchers? attention to quantitative understanding in order to properly implement the thermoelectric module in thermal engineering practices. Basic mathematical models of both heat transfer through a plane wall and thermoelectric effects are numerically solved to represent genuine behaviors of heat flow detection by mounting a thermoelectric module at a plane wall. The heat transfer through the plane wall is expected to be detected. It is intriguing from simulation results that the heat rejected at the plane wall is identical to the heat absorbed by the thermoelectric module when the area of the plane wall is the same as that of the thermoelectric module. Furthermore, both the area sizes of the plane walls and the convective heat transfer coefficients at the wall influence amount of the heat absorbed by the thermoelectric module. Those observational data are modeled for development of sensing heat flow through a plane wall by a thermoelectric module in practical uses.

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Morris, Freda, Nor Zaini Zakaria, and Azni Zain Ahmed. "Heat Flux through Naturally Ventilated Building in Malaysian Climate." Applied Mechanics and Materials 204-208 (October 2012): 4384–88. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.4384.

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Roofs and walls are the main media for heat transfer for typical Malaysian buildings. In order to estimate the duration of uncomfortable periods, the environmental temperature of a building was determined over a period of time. A study of heat flux through a naturally ventilated was conducted by simulation. This study focused on heat transfer through the roof, ceiling and vertical walls. A Thermal Analysis Software was used for the modeling and analyses. A virtual test building model dimension 4m x 4m x 3m was created using conventional construction parameters for roof, ceiling, windows, door, walls and floor which meet the minimum requirement in Malaysian Standards. The results show that heat rate flux mostly peak at east wall before 12:00 hrs and west wall after 12:00 hrs. The heat rate flux through the roof is higher than that through the ceiling during daytime but lower at night as roof was the surface of most exposed to solar radiation. The proportion of heat through roof was 87% by radiation, 11% by convection and 2% by conduction. 97% of heat was transferred by radiation and 3% by conduction for ceiling and heat through wall was 88% by radiation, 8% by convection and 4% by conduction respectively.

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Kang, Yan Bo, Shi Min Huang, and Qiu Lai Yao. "Comparative Study on Shear Wall and Brick Wall Strengthened with Reinforced Concrete Splint." Advanced Materials Research 639-640 (January 2013): 1108–13. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.1108.

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The test process and analysis of 3 walls and the expand calculation about walls are introduced in this paper. Through a series of low-cycle repeated load experiments, the paper do comparative studies on the seismic behavior of concrete shear wall and brick wall strengthened with reinforced concrete splint firstly. Because of the limitations of experiment, the study focuses on the unreinforced brick wall, the 120mm shear wall, the brick wall strengthened with double 60mm reinforced concrete splint and the brick wall strengthened with single 60mm reinforced concrete splint. On the basis of the experiment, we use the finite element software to establish a rational numerical model. Through the finite element analysis, the paper expands the calculation about walls and makes up for the lack of experimental research. Based on the analysis results, we get the conclusion that the reinforced concrete splint can enhance the seismic behavior of the unreinforced brick wall. Taking no consideration of structures’ integral stability, the seismic behavior of brick wall strengthened with double 60mm reinforced concrete splint is equivalent to the 120mm shear wall.

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VÁZQUEZ, M. SALINAS, and O. MÉTAIS. "Large-eddy simulation of the turbulent flow through a heated square duct." Journal of Fluid Mechanics 453 (February 25, 2002): 201–38. http://dx.doi.org/10.1017/s0022112001006887.

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Large-eddy simulations of a compressible turbulent square duct flow at low Mach number are described. First, we consider the isothermal case with all the walls at the same temperature: good agreement with previous incompressible DNS and LES results is obtained both for the statistical quantities and for the turbulent structures. A heated duct with a higher temperature prescribed at one wall is then considered and the intensity of the heating is varied widely. The increase of the viscosity with temperature in the vicinity of the heated wall turns out to play a major rôle. We observe an amplification of the near-wall secondary flows, a decrease of the turbulent fluctuations in the near-wall region and, conversely, their enhancement in the outer wall region. The increase of the viscous thickness with heating implies a significant augmentation of the size of the characteristic flow structures such as the low- and high-speed streaks, the ejections and the quasi-longitudinal vorticity structures. For strong enough heating, the size limitation imposed by the lateral walls leads to a single low-speed streak located near the duct central plane surrounded by two high-speed streaks on both sides. Violent ejections of slow and hot fluid from the heated wall are observed, linked with the central low-speed streak. A selective statistical sampling of the most violent ejection events reveals that the entrainment of cold fluid, originated from the duct core, at the base of the ejection and its subsequent expansion amplifies the ejection intensity.

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Saeed, Thamir Rashed, Mahmuod Hamza Al-Muifraje, and Ghufran M. Hatem. "Through the Wall, Recognize Moving Targets Based on Micro-Doppler Signatures." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 6 (December 1, 2018): 5227. http://dx.doi.org/10.11591/ijece.v8i6.pp5227-5237.

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Radar is a promising device for detection and recognition of invisible moving objects, Where, the micro-Doppler frequency shift caused by moving the object's parts have been represented as an attractive feature in the recognition process. In spite of that, no thorough analysis of human movement by bicycle and no discriminate from the running one through the wall in the literature. This paper presents a mathematical model of bicycle movement, then, the recognition of moving objects through the wall. Where three human movements; walking, running and on a bicycle have been recognized through two types of wall wood and cork. The theoretical analysis and measured was given a recognition 98.7% for human walking on his feet, 99% of the passenger on a bicycle, and 98% of the person running have been achieved without walls. While, a 95.4%, 96.2%, and 95% recognition have been gained from walking, moving by bicycle and running with wooden wall and 94%, 94.8%, and 93.3% respectively with cork wall. 2.4 GHz as a detector and SVM as classifier are used.

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Geuss, M., and J. Stefanucci. "Mirror, mirror, on the wall: Can I walk through this aperture?" Journal of Vision 9, no. 8 (March 21, 2010): 1114. http://dx.doi.org/10.1167/9.8.1114.

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Tai, C. C., P. Y. Tzeng, and C. Y. Soong. "DSMC Study of Pressure-Driven Slip Flow through Microchannel at Non-Uniform Wall Temperature." Journal of Mechanics 31, no. 3 (January 23, 2015): 279–89. http://dx.doi.org/10.1017/jmech.2014.84.

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ABSTRACTThe present study is to investigate the pressure-driven gas flow in microchannel at no-uniform wall temperature. DSMC is employed to generate the flow field details which are then used in analysis of the slip flow characteristics. The major concern is the influences of thermal creep effect on the pressure-driven slip flow. Thermal creep is resulted from tangential wall temperature gradient. In this work, two kinds of thermal boundary condition are considered. One is the linearly varied temperature (LVT) applied to both walls, the other is that has the bottom wall at a thermal condition combined LVT and adiabatic (AD) wall, i.e. LVT-AD-LVT condition. The present DSMC results reveal that the fluid slip is weakened (enhanced) in the case with a negative (positive) wall temperature gradient. Relatively, thermal creep effect on fluid slip over the adiabatic wall is more pronounced in the presence of negative wall temperature gradient. The mass flowrate is a strong function of the wall temperature gradient. However, there is only little difference between the mass flowrates predicted under the two kinds of thermal conditions studied in the present work.

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Jia, Yong, Lingjiang Kong, and Xiaobo Yang. "A NOVEL APPROACH TO TARGET LOCALIZATION THROUGH UNKNOWN WALLS FOR THROUGH-THE-WALL RADAR IMAGING." Progress In Electromagnetics Research 119 (2011): 107–32. http://dx.doi.org/10.2528/pier11052402.

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Klibanov, Michael V., Alexey V. Smirnov, Vo A. Khoa, Anders J. Sullivan, and Lam H. Nguyen. "Through-the-Wall Nonlinear SAR Imaging." IEEE Transactions on Geoscience and Remote Sensing 59, no. 9 (September 2021): 7475–86. http://dx.doi.org/10.1109/tgrs.2021.3055805.

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Nonnenmann, Stephen S., Eric M. Gallo, Michael T. Coster, Gregory R. Soja, Craig L. Johnson, Rahul S. Joseph, and Jonathan E. Spanier. "Piezoresponse through a ferroelectric nanotube wall." Applied Physics Letters 95, no. 23 (December 7, 2009): 232903. http://dx.doi.org/10.1063/1.3263714.

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Jude, Radu. "It Can Pass Through the Wall." Short Film Studies 7, no. 2 (October 1, 2017): 133–35. http://dx.doi.org/10.1386/sfs.7.2.133_7.

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Kaler, James B. "Hot stars: Breaking through the wall." Nature 320, no. 6061 (April 1986): 394–95. http://dx.doi.org/10.1038/320394a0.

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Vinson, V. "CELL BIOLOGY: Growing Through a Wall." Science 321, no. 5897 (September 26, 2008): 1742d. http://dx.doi.org/10.1126/science.321.5897.1742d.

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Albisetti, E., and D. Petti. "Domain wall engineering through exchange bias." Journal of Magnetism and Magnetic Materials 400 (February 2016): 230–35. http://dx.doi.org/10.1016/j.jmmm.2015.07.009.

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Sisma, Ondrej, Alain Gaugue, Christophe Liebe, and Jean-Marc Ogier. "UWB radar: vision through a wall." Telecommunication Systems 38, no. 1-2 (March 19, 2008): 53–59. http://dx.doi.org/10.1007/s11235-008-9087-z.

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Meyer, Helen. "Walking through the wall of fire." Computers & Security 16, no. 3 (January 1997): 215. http://dx.doi.org/10.1016/s0167-4048(97)84550-6.

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Ding, H., X. Li, C. Chen, D. X. An, and L. H. Zheng. "New approach for wall parameters estimation in through-the-wall imaging." Journal of Electromagnetic Waves and Applications 26, no. 13 (August 15, 2012): 1724–33. http://dx.doi.org/10.1080/09205071.2012.711506.

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Dehmollaian, Mojtaba. "Through-Wall Shape Reconstruction and Wall Parameters Estimation Using Differential Evolution." IEEE Geoscience and Remote Sensing Letters 8, no. 2 (March 2011): 201–5. http://dx.doi.org/10.1109/lgrs.2010.2056912.

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Ahmad, F., M. G. Amin, and G. Mandapati. "Autofocusing of Through-the-Wall Radar Imagery Under Unknown Wall Characteristics." IEEE Transactions on Image Processing 16, no. 7 (July 2007): 1785–95. http://dx.doi.org/10.1109/tip.2007.899030.

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Sun, Xin, Bi-ying Lu, Tian Jin, and Zhi-min Zhou. "Antenna planes based wall-clutter mitigation in through-wall-imaging applications." Journal of Central South University 23, no. 10 (October 2016): 2638–46. http://dx.doi.org/10.1007/s11771-016-3325-4.

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Hunt, Steven. "Teaching Roman Food at Key Stage 3: Building Knowledge Through an Enquiry Question." Journal of Classics Teaching 16, no. 32 (2015): 50–52. http://dx.doi.org/10.1017/s2058631015000227.

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Apromenade lesson is when the learners get up and source, identify and evaluate information from materials attached to the walls of the classroom or a corridor or some other space in the school. The students have to walk around the ‘exhibits’ to find out something and note it down as they go. This activity can forms a part of a sequence of tasks in a lesson. It works well for any subject matter which is highly visual, such as images taken from Pompeian wall-paintings, for example, or even for enlarged text selections.

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Lei, Cheng Wang, and Tuo Tian Wang. "Natural Convection of Air through an Asymmetrically Heated Vertical Channel with a Baffle." Applied Mechanics and Materials 846 (July 2016): 7–11. http://dx.doi.org/10.4028/www.scientific.net/amm.846.7.

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The buoyancy-induced air flow through a two-dimensional vertical ventilation channel is calculated. One of the channel walls is heated uniformly, and the other wall is adiabatic. A thin baffle is placed on the heated wall to manipulate the air flow through the channel. Numerical results are obtained for baffles of different lengths and placed at various heights along the heated wall. It is found that the baffle is effective in weakening a reverse flow at the exit of the channel, and significant enhancement of ventilation performance may be achieved with the presence of the baffle.

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Mohyud-Din, Syed Tauseef, Naveed Ahmed, and Umar Khan. "Flow of a radioactive Casson fluid through a deformable asymmetric porous channel." International Journal of Numerical Methods for Heat & Fluid Flow 27, no. 9 (September 4, 2017): 2115–30. http://dx.doi.org/10.1108/hff-09-2016-0339.

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Purpose The purpose of this study is to investigate numerically the influence of nonlinear thermal radiation on the flow of a viscous fluid. The flow is confined in a channel with deformable porous walls. Design/methodology/approach Two numerical schemes, namely, Galerkin’s method (GM) and Runge–Kutta–Fehlberg (RKF) method have been used to obtain solutions after reducing the governing equations to a system of nonlinear ordinary differential equations. Findings Heat transfer rate falls at the upper wall owing to the decreasing values of the permeability parameter. However, at the lower wall, the same rate rises. Increment in θw increases the rate of heat transfer at both walls. Nusselt number also increases with the increasing values of Rd. Rd also uplifts the temperature distribution, except for the case where it falls near the lower wall owing to the contraction coupled with injection. Originality/value It is confirmed that the presented work is original.

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Joye, Gary F., and Rex N. Paul. "Histology of Infection of Hydrilla verticillata by Macrophomina phaseolina." Weed Science 40, no. 2 (June 1992): 288–95. http://dx.doi.org/10.1017/s0043174500057362.

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Infection of Hydrilla verticillata by Macrophomina phaseolina was investigated using scanning and transmission electron microscopy. Sprigs of plants in petri plates were inoculated with suspensions of fungal hyphae. Samples of inoculated and noninoculated plants were taken over time. Fungal cells attached to lower epidermal cell walls but not the upper epidermal cell walls of leaves. In less than 40 h, penetration through the cell wall was completed and colonization of host cells was observed. Penetration of upper epidermis was limited to the cell wall adjacent to a lower epidermal cell. No penetration was observed through the outer cell wall of upper epidermis. Inhibition of penetration through the outer cell wall of the upper epidermis may be attributable to an osmiophilic layer below the cell wall. Disruption of the host cell walls and subsequent host cell death was preceded by massive colonization of the host by this pathogen.

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Maaref, Nadia, and Patrick Millot. "Array-Based Ultrawideband through-Wall Radar: Prediction and Assessment of Real Radar Abilities." International Journal of Antennas and Propagation 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/602716.

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This paper deals with a new through-the-wall (TTW) radar demonstrator for the detection and the localisation of people in a room (in a noncooperative way) with the radar situated outside but in the vicinity of the first wall. After modelling the propagation through various walls and quantifying the backscattering by the human body, an analysis of the technical considerations which aims at defining the radar design is presented. Finally, an ultrawideband (UWB) frequency modulated continuous wave (FMCW) radar is proposed, designed, and implemented. Some representative trials show that this radar is able to localise and track moving people behind a wall in real time.

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Balaj, Mojtaba, Hassan Akhlaghi, and Ehsan Roohi. "Rarefied gas flow behavior in micro/nanochannels under specified wall heat flux." International Journal of Modern Physics C 26, no. 08 (May 3, 2015): 1550087. http://dx.doi.org/10.1142/s0129183115500874.

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In this paper, we investigate the effects of convective heat transfer on the argon gas flow through micro/nanochannels subject to uniform wall heat flux (UWH) boundary condition using the direct simulation Monte Carlo (DSMC) method. Both the hot wall (q wall > 0) and the cold wall (q wall < 0) cases are considered. We consider the effect of wall heat flux on the centerline pressure, velocity profile and mass flow rate through the channel in the slip regime. The effects of rarefaction, property variations and compressibility are considered. We show that UWH boundary condition leads to the thermal transpiration. Our investigations showed that this thermal transpiration enhances the heat transfer rate at the walls in the case of hot walls and decreases it where the walls are being cooled. We also show that the deviation of the centerline pressure distribution from the linear distribution depends on the direction of the wall heat flux.

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Journal articles on the topic 'Through the wall'

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