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Journal articles on the topic 'The three box solution'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Aprilia, Pratiwi. "Three Box Solutionin New Normal Hospitality Sector: A Conceptual Framework." International Journal of Arts and Social Science 5, no. 1 (2023): 182–87. https://doi.org/10.5281/zenodo.7747918.

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To provide a conceptual framework for understanding and provide ideas on the application of The Three Box Solution concept through the new normal in the hospitality sector. This paper contains a combination by presenting an overview of the impact of COVID-19 in the hotel sector based on the latest news reports, The Three Box Solution conceptual and then develop framework for application new normal hospitality sector and offer for further research. The results of this paper are the framework application of three box solutions in the form of box 1: present, focus hotel performance: implement hea

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2

Barabba, Vincent. "Assessing General Motors’ innovation strategy over three decades using the “Three Box Solution”." Strategy & Leadership 47, no. 2 (2019): 34–42. http://dx.doi.org/10.1108/sl-01-2019-0004.

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Purpose Professor Vijay Govindarajan’s “Three Box Solution” framework provides a useful way of looking at a transformative business innovation initiative started at General Motors almost three decades ago and now being further developed by its current CEO Mary Barra. Design/methodology/approach Drawing on 18 years of experience at GM the author offers insights into how the company used the “Three Box” aproach: 10;•9;Box 1: Strengthen the core. 10;•9;Box 2: Let go of the practices that drive the core business but hinder the new one. 10;•9;Box 3: Invented a new business model. 10; Findings GM ma

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Coombs, Gary. "The Three Box Solution: A Strategy for Leading Innovation." Journal of Applied Management and Entrepreneurship 22, no. 1 (2017): 109–12. http://dx.doi.org/10.9774/gleaf.3709.2017.ja.00009.

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Kessler, R. "Nonlinear transition in three-dimensional convection." Journal of Fluid Mechanics 174 (January 1987): 357–79. http://dx.doi.org/10.1017/s0022112087000168.

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Steady and oscillatory convection in a rectangular box heated from below are studied by means of a numerical solution of the three-dimensional, time-dependent Boussinesq equations. The effect of the rigid sidewalls of the box on the spatial structure and the dynamical behaviour of the flow is analysed. Both conducting and adiabatic sidewalls are considered. Calculated streamlines illustrate the three-dimensional structure of the steady flow with Prandtl numbers 0.71 and 7. The onset and the frequency of the oscillatory instability are calculated and compared with available experimental and the

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Sañudo, J., and A. F. Pacheco. "Electrons in a box: Thomas–Fermi solution." Canadian Journal of Physics 84, no. 9 (2006): 833–44. http://dx.doi.org/10.1139/p06-084.

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The Thomas-Fermi density distribution of N electrons located inside a box is obtained. This system models some aspects of the structure of the new artificial atoms or quantum dots fabricated using present semiconductor technology. The three-dimensional solutions are obtained by means of a perturbative series, using a convenient dimensionless parameter characteristic of the size of the box and the electron number. The explicit analytic form for the first two terms of the series is derived. PACS No.: 71.10.Ca

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Vadasz, P. "Three-Dimensional Free Convection in a Long Rotating Porous Box: Analytical Solution." Journal of Heat Transfer 115, no. 3 (1993): 639–44. http://dx.doi.org/10.1115/1.2910734.

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A three-dimensional analytical solution to the steady-state free convection problem in a long rotating porous box is presented for large values of the porous media Ekman number. The convection results from differential heating of the horizontal walls leading to temperature gradients orthogonal to the centrifugal body force. The solution to the nonlinear set of partial differential equations was obtained through an asymptotic expansion of the dependent variables in terms of two small parameters representing the reciprocal Ekman number in porous media and the aspect ratio of the domain. The resu

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Tang, Longjiang, Jungang Wang, Huizhong Zhu, Maorong Ge, Aigong Xu, and Harald Schuh. "A Comparative Study on the Solar Radiation Pressure Modeling in GPS Precise Orbit Determination." Remote Sensing 13, no. 17 (2021): 3388. http://dx.doi.org/10.3390/rs13173388.

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For Global Positioning System (GPS) precise orbit determination (POD), the solar radiation pressure (SRP) is the dominant nongravitational perturbation force. Among the current SRP models, the ECOM and box-wing models are widely used in the International GNSS Service (IGS) community. However, the performance of different models varies over different GPS satellites. In this study, we investigate the performances of different SRP models, including the box-wing and adjustable box-wing as a priori models, and ECOM1 and ECOM2 as parameterization models, in the GPS POD solution from 2017 to 2019. Mo

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Samadi-Maybodi, Abdolraouf, and Afshin Rahmati. "One-Step Fabrication of Three Metals Zif and its Application for Adsorption of Levofloxacin in Aqueous Solution." Current Analytical Chemistry 16, no. 7 (2020): 933–46. http://dx.doi.org/10.2174/1573411015666191116120818.

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Background: Zeolitic imidazolate frameworks with three metals Zn, Co and Ag (ZIF-3M) and ZIF-67 were synthesized at room temperature and characterized with different techniques such as FESEM, BET, EDX and XRD. Then, the synthesized nanoparticles were successfully applied for the removal of levofloxacin from aqueous solutions. Methods: To optimize the significant factors (i.e., pH, adsorbent dose and contact time), the response surface methodology (RSM) was implemented based on Box-Behnken design (BBD) in each step, an appropriate amount of adsorbent was added to 30 ppm of a solution containing

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Lo, D. C. "An accurate numerical solution study of three-dimensional natural convection in a box." International Communications in Heat and Mass Transfer 37, no. 9 (2010): 1280–89. http://dx.doi.org/10.1016/j.icheatmasstransfer.2010.07.016.

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Laftani, Yasmine, Baylassane Chatib, Abdelghani Boussaoud, Mohammed El Makhfouk, Mohsine Hachkar, and Mohammed Khayar. "Optimization of diazo dye disappearance by the UV/H2O2 process using the Box–Behnken design." Water Science and Technology 80, no. 9 (2019): 1731–39. http://dx.doi.org/10.2166/wst.2019.424.

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Abstract The purpose of this study was to apply the experimental Box–Behnken design (BBD) to evaluate the effect and, therefore, the optimal values of three chosen factors on the efficiency of the UV/H2O2 process to decolorize Ponceau S (PS) aqueous solutions. The factors studied at three levels were the irradiated volume of dye solution, the dye solution turbidity and the H2O2 dosage. The equations generated, analysis of variance (ANOVA), contour plots and response surface plots were used to analyze the relationship between independent variables and the outcomes of experiments. The fitted mod

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Mahmood, Thanzeel Niranjan Thomas B. Sachin Suresh Sidharth Sathyam Krishna Neetha K. Nataraj. "Vehicle Black Box System." International Journal of Scientific Research and Technology 2, no. 4 (2025): 137–43. https://doi.org/10.5281/zenodo.15179749.

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The Wireless Black Box system is an innovative vehicle monitoring solution designed to enhance road safety by recording critical data during accidents. This device captures and stores key crash parameters such as date, time, temperature, location, and vibration levels, along with driver sobriety using an alcohol sensor. The system integrates GPS and GSM modules to transmit real-time alerts to emergency contacts, providing immediate support following an incident. Equipped with sensors for temperature, vibration, gyroscope-based tilt detection, and location tracking, the Black Box records vehicl

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Sodano, P., Y. Ohyama, D. Locker, et al. "Solution structure of the wild-type HMGI a box by 1 h and 15n NMR and molecular modelling." Protein & Peptide Letters 4, no. 2 (1997): 107–14. http://dx.doi.org/10.2174/092986650402221012164202.

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Abstract: The solution structure of the wild-type A box of rat HMG1 has been determined by heteronuclear three-dimensional NMR and molecular modelling. This structure adopts a "L" shape structure globaly similar to that described for a mutant A box and other HMG boxes. However the wild-type A box contains two Cys residues which could form intramolecular bridge in an oxidative environment. This should be into competition with a contribution of the thiol groups in the binding ofHMG proteins to cisplatin-modified DNA.

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Stone, Peter H., and Yuriy P. Krasovskiy. "An Interhemispheric Four-Box Model of the Meridional Overturning Circulation." Journal of Physical Oceanography 41, no. 3 (2011): 516–30. http://dx.doi.org/10.1175/2009jpo4123.1.

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Abstract The authors introduce a four-box interhemispheric model of the meridional overturning circulation. A single box represents high latitudes in each hemisphere, and in contrast to earlier interhemispheric box models, low latitudes are represented by two boxes—a surface box and a deep box—separated by a thermocline in which a balance is assumed between vertical advection and vertical diffusion. The behavior of the system is analyzed with two different closure assumptions for how the low-latitude upwelling depends on the density contrast between the surface and deep low-latitude boxes. The

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Kusuma, Jeffry, Agustinus Ribal, and Andi Galsan Mahie. "On FTCS Approach for Box Model of Three-Dimension Advection-Diffusion Equation." International Journal of Differential Equations 2018 (November 1, 2018): 1–9. http://dx.doi.org/10.1155/2018/7597861.

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This paper describes a numerical solution for mathematical model of the transport equation in a simple rectangular box domain. The model of street tunnel pollution distribution using two-dimension advection and three-dimension diffusion is solved numerically. Because of the nature of the problem, the model is extended to become three-dimension advection and three-dimension diffusion to study the sea-sand mining pollution distribution. This model with various advection and diffusion parameters and the boundaries conditions is also solved numerically using a finite difference (FTCS) method.

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Boodi, Abhinandana, Karim Beddiar, Yassine Amirat, and Mohamed Benbouzid. "Building Thermal-Network Models: A Comparative Analysis, Recommendations, and Perspectives." Energies 15, no. 4 (2022): 1328. http://dx.doi.org/10.3390/en15041328.

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The development of smart buildings, as well as the great need for energy demand reduction, has renewed interest in building energy demand prediction. Intelligent controllers are a solution for optimizing building energy consumption while maintaining indoor comfort. The controller efficiency on the other hand, is mainly determined by the prediction of thermal behavior from building models. Due to the development complexity of the models, these intelligent controllers are not yet implemented on an industrial scale. There are primarily three types of building models studied in the literature: whi

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Manjula, R., and A. Amrutha. "Parametric Analysis of Single-Cell Box Girder Bridge." IOP Conference Series: Materials Science and Engineering 1197, no. 1 (2021): 012047. http://dx.doi.org/10.1088/1757-899x/1197/1/012047.

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Abstract Bridges based on box girders concept are extensively utilized for their cost saving solution for different passages & viaducts that are seen in the present day highway systems. The behavior of box girder bridges is analyzed for stresses in longitudinal and transverse directions. In this paper, analysis of three different box girders has been carried out using SAP2000 as per Indian Road Congress(IRC) provisions for rectangular and trapezoidal sections. The behaviors of box girders with uniform depth and varying widths have been analyzed. A parametric study is conducted for various

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Matukaitis, Mindaugas, Renaldas Urniezius, Deividas Masaitis, Lukas Zlatkus, Benas Kemesis, and Gintaras Dervinis. "Synchronized Motion Profiles for Inverse-Dynamics-Based Online Control of Three Inextensible Segments of Trunk-Type Robot Actuators." Applied Sciences 11, no. 7 (2021): 2946. http://dx.doi.org/10.3390/app11072946.

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This study proposes a novel method for the positioning and spatial orientation control of three inextensible segments of trunk-type robots. The suggested algorithm imposes a soft constraint assumption for the end-effector’s endpoint and a mandatory constraint on its direction. Simultaneously, the algorithm by-design enforces nonholonomic features on the robot segments in the form of arcs. An approximate robot spine curve is the key to the final robot state configuration based on the given conditions. The numeric simulation showed acceptable (less than 1 s) performance for single-core processin

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Kana, Sreekanth, Juhi Gurnani, Vishal Ramanathan, Mohammad Zaidi Ariffin, Sri Harsha Turlapati, and Domenico Campolo. "Learning Compliant Box-in-Box Insertion through Haptic-Based Robotic Teleoperation." Sensors 23, no. 21 (2023): 8721. http://dx.doi.org/10.3390/s23218721.

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In modern logistics, the box-in-box insertion task is representative of a wide range of packaging applications, and automating compliant object insertion is difficult due to challenges in modelling the object deformation during insertion. Using Learning from Demonstration (LfD) paradigms, which are frequently used in robotics to facilitate skill transfer from humans to robots, can be one solution for complex tasks that are difficult to mathematically model. In order to automate the box-in-box insertion task for packaging applications, this study makes use of LfD techniques. The proposed framew

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Selc¸uk, N. "Exact Solutions for Radiative Heat Transfer in Box-Shaped Furnaces." Journal of Heat Transfer 107, no. 3 (1985): 648–55. http://dx.doi.org/10.1115/1.3247473.

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Exact expressions for the distributions of the components of radiative flux density and the radiative energy source term in terms of wall and medium temperature distributions have been formulated for an emitting-absorbing medium of constant properties bounded by black walls of a box-shaped enclosure. The accuracy of numerical solutions has been tested on an idealized enclosure for which exact analytical solution of the expressions is possible and shown to have good accuracy. The exact expressions have then been solved numerically for an enclosure problem based on data reported previously on a

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Yao, Yini, Lin Cheng, and Yunlong Tao. "Finite Element Analysis and Structural Optimization Research of New Energy Vehicle Battery Box." Journal of Physics: Conference Series 2674, no. 1 (2023): 012020. http://dx.doi.org/10.1088/1742-6596/2674/1/012020.

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Abstract This study takes a new energy vehicle as the research object, establishing a three-dimensional model of the battery box based on CATIA software, importing it into ANSYS finite element software, defines its material properties, conducts grid division, and sets boundary conditions, and then conducts static and modal analysis to obtain the stress and deformation cloud maps of the battery box under three typical operating conditions, as well as the natural frequencies of the first 6 modes. Based on this, the ANSYS software’s topology optimization tool was utilized to successfully reduce t

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COFFEY, C. J., and G. R. HUNT. "The unidirectional emptying box." Journal of Fluid Mechanics 660 (September 1, 2010): 456–74. http://dx.doi.org/10.1017/s0022112010002739.

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A theoretical description of the turbulent mixing within and the draining of a dense fluid layer from a box connected to a uniform density, quiescent environment through openings in the top and the base of the box is presented in this paper. This is an extension of the draining model developed by Linden et al. (Annu. Rev. Fluid Mech. vol. 31, 1990, pp. 201–238) and includes terms that describe localized mixing within the emptying box at the density interface. Mixing is induced by a turbulent flow of replacement fluid into the box and as a consequence we predict, and observe in complementary ex

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Rajak, Abdul, Muhammad Miftahul Munir, Abdullah Mikrajuddin, and Khairurrijal. "Photocatalytic Activities of Electrospun TiO₂/Styrofoam Composite Nanofiber Membrane in Degradation of Waste Water." Materials Science Forum 827 (August 2015): 7–12. http://dx.doi.org/10.4028/www.scientific.net/msf.827.7.

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TiO2/Styrofoam composite fiber membranes were synthesized by using an electrospinning system for water purification applications. Composite fiber membrane was fabricated from precursor solution prepared by dissolving Styrofoam in the mixture of tetrahydrofuran (THF), citronella oil and cajuput oil. The precursor solutions is mixed with TiO2powder with three variations based on the concentration (1:15,1:20 and 1:40). Textile dye with 50 ppm of concentration was performed as a model of waste water. The structure and morphology of each membrane were characterized by using scanning electron micros

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Fatimah, Siti. "E-Training Course Test Apps as a Media for Measuring Students' Academic Abilities." Journal of Computer Science Application and Engineering (JOSAPEN) 1, no. 1 (2023): 17–22. https://doi.org/10.70356/josapen.v1i1.9.

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This study introduces an E-Training application developed to overcome limitations in traditional classroom settings where time constraints and delayed material delivery hinder student development. E-Training, utilizing information technology in education, responds to the evolving landscape of technological advancements and the global need for IT-based teaching concepts. The implementation of this system follows the prototype model, emphasizing iterative development stages, enhancing understanding, reducing risks, and ensuring cost-effective solutions. The research outlines the comprehensive de

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Leavy, Brian. "Two approaches for sustaining growth: re-introducing the “founder’s mentality” and implementing “The Three Box” solution." Strategy & Leadership 44, no. 5 (2016): 36–46. http://dx.doi.org/10.1108/sl-06-2016-0049.

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Purpose The challenge of sustaining growth seems to be getting steeper and steeper. This Masterclass provides context for two recent books that have valuable insights to offer to company leaders and strategists on how to build resilience and sustain growth in increasingly dynamic and uncertain global competitive markets. Design/methodology/approach In The Founder’s Mentality: How to Overcome the Predictable Crises of Growth (2016), well-known Bain strategy consultants, Chris Zook and James Allen offer a strategy for consciously embedding “the founder’s mentality” into the culture of young firm

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Borkowska-Pawlak, B., and W. Kordylewski. "Cell-pattern sensitivity to box configuration in a saturated porous medium." Journal of Fluid Mechanics 150 (January 1985): 169–81. http://dx.doi.org/10.1017/s0022112085000088.

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Steady small-amplitude thermal convection in a fluid-saturated. infinitely extended porous layer is investigated theoretically in the wavenumber range 1/√2−1. It was shown that the point of multiple bifurcation Ra0 = (3/√2 + 2)π2, α0 = 2−0.25 leads to secondary bifurcation when the wavenumber decreases.As a result a new branch of a stable, complicated, three-dimensional flow in the square cell was discovered for α close to α0. This branch joins two adjacent branches of three-dimensional flows emanating from the trivial solution and causes their stability transition at the branching points.

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Dimitrienko, Y., Yu Yurin, I. Bogdanov, and A. Maremshaova. "Finite element modeling of thin-walled shell composite structures." E3S Web of Conferences 376 (2023): 01038. http://dx.doi.org/10.1051/e3sconf/202337601038.

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An algorithm for solving the problem of elasticity theory for composite thin-walled shell composite structures with junction lines is proposed. The SMCM software was created based on the finite element method and the developed algorithm. A test problem was solved for a composite shell structural element of the box-plate type docked with 4 other plates. A comparative analysis of the obtained results was carried out with the reference solution of the three-dimensional elasticity problem in the ANSYS software, as well as with the two-dimensional shell solution of the ANSYS software. SMCM PC allow

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Ocreto, Jherwin, Chester Ian Go, Jans Cholo Chua, Cyrrus Jude Apacible, and Anabella Vilando. "Competitive effects for the adsorption of copper, cadmium and lead ions using modified activated carbon from bambo." MATEC Web of Conferences 268 (2019): 06021. http://dx.doi.org/10.1051/matecconf/201926806021.

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Modified activated carbon from bamboo was used as a low-cost potential adsorbent to remove cadmium, copper and lead in single, bimetal and trimetal aqueous solutions. Using the initial concentration of 40 ppm, the analysis was conducted to determine the effect of pH (2.5, 3.0, and 5.5), contact time (60, 90, 120 min) and adsorbent dosage (20, 40, 60 mg/50 mL of solution). Results showed that for single metal aqueous solution, the % adsorption for Cu, Cd, and Pb were 89.0%, 87.4%, and 99.5% respectively. For bimetal aqueous solution the % adsorption of CuCd, CuPb, CdCu, CdPb, PbCu,and PbCd were

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Seger, Israa Shakir, Israa M. Hayder, Hussain A. Younis, and Hameed Abdul-Kareem Younis. "Solve the Problem of Chess Board in the Shape of the Letter L with Three different Patterns Using Artificial Intelligence & Algorithms." Webology 19, no. 1 (2021): 83–95. http://dx.doi.org/10.14704/web/v19i1/web19006.

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In recent years, the chess game has begun to develop successful programming solutions. Computers were programmed to play chess in the middle of the twentieth century. Computer skills have become better and higher than the skills of chess players in the world, and from here this study has made it possible to find the optimal solution for the four square pieces in the form of a letter (L) without repetition and quick access to fill the sites and voids and to complete the entire area. It is our task to cover a (2n×2n) Chessboard with L-shaped tiles each tile is a (2×2) square with a (1×1) square

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Irawan, Hendra, Selsa Wulandia Irawan, Habiburrahman ., and Reza Ravika. "Eksistensi Kotak Kosong Pada Pilkada 2024 Di LampungThe Existence Of Empty Boxes In The 2024 Regional Elections Lampung." Siyasah Jurnal Hukum Tatanegara 4, no. 2 (2024): 194–214. http://dx.doi.org/10.32332/rs7w5y11.

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The Empty Box phenomenon is a current that is being discussed ahead of the 2024 elections, which is certainly inseparable from democracy. Empty boxes are predicted to be a solution as well as an inconsistency that erodes democratic values. In Lampung itself, there are two regions that will fight the Empty Box in the upcoming 27 November 2024 Pilkada, which is motivated by several factors, one of which is political domination. Understanding the existence of the Empty Box is important especially for mutual understanding and avoiding misconceptions. This article focuses on how the presence of the

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Tai-Yi Liu, Cheng-An Lee, Hong-Kee Tzou, Shiun-Jye Lin, Mao-Yi Chou, and Ke-Fan Jhan. "Sustainable Solution for Shoring Method of Cross-Creek Bridge in Ankeng MRT System in New Taipei City: A Case Study." International Journal of Engineering and Management Research 11, no. 1 (2021): 18–24. http://dx.doi.org/10.31033/ijemr.11.1.3.

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In the Ankeng Light Rail MRT system (ALRMS) project, the U7 box girder passes crossing the Erbads creek and needs a temporary supporting system for the construction work. In this study, three temporary shoring system options were proposed to be the construction method. The D-B Contractor, New Asia construction and Development Corporation, evaluated and selected the optimal choice, The Steel truss frame with supporting beams, to serve as the temporary supporting system. Compare the deflection of Δmax and Δactual, which are 1.609 cm and 1.59 cm, respectively. This result presented that the shori

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Sabir, Ali Kalhoro, and Ghous Bakhsh Dr. "A Proposed Indigenous Municipal Waste Based RE Generation Plant Design for South Asian Coastal Mega Cities." Global Research Review 1, no. 2 (2021): 42–59. https://doi.org/10.5281/zenodo.5840259.

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Abstract: The urbanisation in developing countries has resulted in growth of big cities. There are emerging engineering challenges inviting out of box solutions. The paper proposes the Indigenous solution to municipal waste in Karachi, Pakistan. The model proposed here can be replicated in any of the coastal cities with climate conditions and waste types resembling that of Karachi.

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Popovici, Elena. "Co-Optimization Free Lunches: Tractability of Optimal Black-Box Algorithms for Maximizing Expected Utility." Evolutionary Computation 26, no. 1 (2018): 145–75. http://dx.doi.org/10.1162/evco_a_00208.

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Co-optimization problems often involve settings in which the quality ( utility) of a potential solution is dependent on the scenario within which it is evaluated, and many such scenarios exist. Maximizing expected utility is simply the goal of finding the potential solution whose expected utility value over all possible scenarios is best. Such problems are often approached using coevolutionary algorithms. We are interested in the design of generally well-performing black-box algorithms for this problem, that is, algorithms which have access to the utility function only via input–output queries

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Knuth, Heidi. "BookBins: The “Waiting Room in a Box” of Outreach." Children and Libraries 15, no. 2 (2017): 32. http://dx.doi.org/10.5860/cal.15n2.32.

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In fall 2015, the Bloomingdale (IL) Public Library was increasing community outreach at an incredible rate, Little Free Libraries were all the buzz, both in library circles and among community activists and beautifiers, and I happened to be in a cell phone store . . . watching a small child do everything in her three year old power to alleviate her boredom.She was running circles around the desk, pulling packaged accessories off displays, and patting at mom’s leg for attention . . . all to no avail. I eventually left the store without having my needs met—much like that little girl—and as I dro

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Güzel, Yunus. "Kronik Diazepam Uygulamasının ve Diazepam Yoksunluğunun Kaçınma Davranışı Üzerindeki Etkisinin İncelenmesi." International Journal of Social Sciences 6, no. 24 (2022): 362–71. http://dx.doi.org/10.52096/usbd.6.24.21.

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The main objective of this study was to investigate the effect of low-dose chronic diazepam (DZ) administration and diazepam withdrawal on avoidance behavior in the two-way shock box of rats. Twenty-four rats were selectively divided into three groups (1 mg/kg DZ, 2 mg/kg DZ, control group), all rats were trained to avoid electric shock (0.8 mA) from grids on the floor of the box by passing through the box from one compartment to another. After 5 sessions of training over a seven-day period, chronic drug administration was started. For twenty-eight days, the first group was given 1 mg/kg DZ (D

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Joan, C. Micó, Caselles Antonio, and Amigó Salvador. "Avances en la interpretación mecanocuántica de la dinámica del cerebro." Revista Internacional de Sistemas 16 (December 15, 2008): 74–82. https://doi.org/10.5281/zenodo.1137624.

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From a non-linear Schrödinger equation to describe the space-time dynamics of brain in absence of stimuli, we demonstrate that the wave function cannot be interpreted as a probability density, such as it happens in the non-relativistic Quantum Mechanics. The analytical solution of this equation is obtained, which depends on two integral constants. The boundary conditions are applied to a “box brain” model that has a parallelepiped shape. We deduce that there are not solutions for an isolated “box brain”. However, the boundary condition of null value for the wave fu

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Hermawan, Iwan, Suharmanto Suharmanto, Gita Hindrawati, Sartono Sartono, Inayah Inayah, and Bagas Pratama. "Empowerment of Chicken Farmers Based on Cleaner Production and Strengthening of Product Added Value through Entrepreneurial Knowledge Enhancement." International Journal of Research and Community Empowerment 2, no. 2 (2024): 56–64. http://dx.doi.org/10.58706/ijorce.v2n2.p56-64.

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Given the environmental and health challenges, chicken poultry farms are now facing an increasing urgency to implement cleaner production. The application of the Cleaner Production concept is expected to be a solution to increase business efficiency and sustainability. One way is to process chicken poultry farm waste into valuable products, such as organic fertilizers, thereby reducing environmental negative impacts. This research method uses a Research and Development (R&D) approach with a three-box method. The community participates in a training program focusing on the innovation of pro

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Priyuko, D., R. Rifky, A. Saputra, A. I. Fahrezi, and M. I. Sobirin. "Effect of using phase change material (PCM) magnesium sulfate (MgSO4) solution as heat storage in solar powered thermoelectric cooler box." Dinamika Teknik Mesin 15, no. 1 (2025): 9. https://doi.org/10.29303/dtm.v15i1.964.

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Utilization of new, renewable energy sources is very important for society as a way to switch from fossil fuels. Solar energy is a type of renewable energy that is very promising for various applications. Traditional cooling systems contribute to the depletion of the ozone layer, requiring alternatives such as using thermoelectric solar energy (TEC) for cooling. In addition, PCM used, such as 25%, 30%, and 35% MgSO₄ solutions, can absorb latent heat during the cooling process, thereby increasing efficiency. This research aims to increase coefficient of performance (CoP) of cooling boxes by int

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Shahbazi, Afsaneh, and Farnoosh Bagheri Zonoz. "Decolorization of Malachite green dye from wastewater by Populus deltoides: three-level Box–Behnken design optimization, equilibrium, and kinetic studies." Journal of Water Reuse and Desalination 5, no. 3 (2015): 250–63. http://dx.doi.org/10.2166/wrd.2015.085.

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Decolorization of Malachite green in aqueous solution by adsorption onto Populus deltoides sawdust (PSD) was optimized through a four-factor, three-level Box–Behnken design in response surface methodology. The influences of four independent variables such as initial pH of solution (3–7), dye concentration (50–300 mg/L), adsorbent dose (0.2–2 g/L), and temperature (23–50 °C) were studied to optimize the condition of dye removal. A natural log transformation was suggested by the Box–Cox plot in order to enhance the model significance. Regression analysis showed good fit of the experimental data

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Pate, W. Denney. "Innovative Design and Construction of Chesapeake and Delaware Canal Bridge." Transportation Research Record: Journal of the Transportation Research Board 1696, no. 1 (2000): 44–48. http://dx.doi.org/10.3141/1696-41.

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An outstanding accomplishment of bridge design, construction, and management, the Chesapeake and Delaware (C&D) Canal Bridge demonstrates that precast, segmental, cable-stayed bridges can be an economical and aesthetically pleasing solution in an area of the country where steel bridges are predominant. The C&D Canal Bridge is the first major concrete segmental cable-stayed bridge structure to be completed in the Northeast. The $58 million C&D Canal Bridge is a precast concrete, segmental structure 1417 m (4,650 ft) in length. Twin parallel box girders were designed to provide six l

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Li, Weiyang, Wei Wang, and Peng Zhang. "Three-Phase Three-Dimensional Electrochemical Process for Efficient Treatment of Greywater." Membranes 12, no. 5 (2022): 514. http://dx.doi.org/10.3390/membranes12050514.

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Water shortages around the world have intensified the search for substitute sources. Greywater can serve as a solution for water requirements. Compared to two-dimensional electrochemical processes for water treatment, the addition of particle activated carbon enhances the conductivity and mass transfer or the adsorption of pollutants in a three-dimensional (3D) electrochemical process. The large specific surface areas of these particles can provide more reactive sites, resulting in a higher removal efficiency. In this study, the treatment of greywater by the electro-Fenton (E-Fenton) method wa

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Li, Yanfeng, Jiyuan Xie, Fengchi Wang, and Yuanhui Li. "Shear Lag Effect of Ultra-Wide Box Girder under Influence of Shear Deformation." Applied Sciences 14, no. 11 (2024): 4778. http://dx.doi.org/10.3390/app14114778.

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The objective of this study was to determine the reasonable flexural functions of ultra-wide box girders, reveal the mechanism of the shear lag effect, and improve the analysis theory of ultra-wide box girders. Considering a single-box three-chamber thin-walled box girder as an example, starting from an uneven transfer of shear flow, the flexural displacement function of the curved box girder under the influence of shear deformation of each plate was derived according to the flexural theory of a thin-walled box girder, balance equation of a thin-walled microelement plate, and theory of plane s

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Arunachalam, Thirunavukkarasu, and Nithya Rajarathinam. "Response surface optimization of Cu(II) biosorption onto Candida tropicalis immobilized strontium alginate beads by Box-Behnken experimental design." Journal of Environment and Biotechnology Research 8, no. 2 (2019): 14–21. https://doi.org/10.5281/zenodo.2619835.

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A study was conducted to examine the Cu(II) removal from aqueous solution by immobilized Candida tropicalis in strontium alginate beads using three factor, three-level Box-Behnken experimental design in lab-scale batch study. Prior to the statistical analysis, the Candida tropicalis immobilization was performed using strontium chloride and sodium alginate. A second-order polynomial regression equation was developed to predict Cu(II) removal efficiency as the response using three independent variables, Adsorbent dosage (Cads) ranging from 2.0 to 6.0 g/L, initial pH of the solution (pHo) ranging

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Adamko, Peter. "Three Cube Packing for All Dimensions." Algorithms 17, no. 5 (2024): 198. http://dx.doi.org/10.3390/a17050198.

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Let Vn(d) denote the least number, such that every collection of n d-cubes with total volume 1 in d-dimensional (Euclidean) space can be packed parallelly into some d-box of volume Vn(d). We show that V3(d)=r1−dd if d≥11 and V3(d)=1r+1rd+1r−rd+1 if 2≤d≤10, where r is the only solution of the equation 2(d−1)kd+dkd−1=1 on 22,1 and (k+1)d(1−k)d−1dk2+d+k−1=kddkd+1+dkd+kd+1 on 22,1, respectively. The maximum volume is achieved by hypercubes with edges x, y, z, such that x=2rd+1−1/d, y=z=rx if d≥11, and x=rd+(1r−r)d+1−1/d, y=rx, z=(1r−r)x if 2≤d≤10. We also proved that only for dimensions less than

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Zhang, Guang Sheng, and Fei Zhang. "Casting Process Solutions Optimization of LFC Forklift Box." Applied Mechanics and Materials 571-572 (June 2014): 1091–96. http://dx.doi.org/10.4028/www.scientific.net/amm.571-572.1091.

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There are many advantages in producing forklift box through the LFC. However, we found shrinkage porosity defects in the interior of castings through simulating the original process by ProCAST casting simulation software. Therefore, we analyzed the defects and improved the technology program. firstly, increased riser in position of shrinkage, Secondly, changed the filling’s way, lastly, selected the best temperature and vacuum by the orthogonal experiment and determined the best technology solution. we found the shrinkage porosity defects have been removed by the improved process. We found the

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Muhammad, Meizano Ardhi, Achmad Yahya Teguh Panuju, Hadi Prayitno, Rio Ariestia Pradipta, Martinus Martinus, and Gustian Ilham Akbar. "Internet of Things Ultraviolet Sterilizer Receiver Box: How to Design and Construct?" International Journal of Electronics and Communications Systems 1, no. 2 (2021): 69–75. http://dx.doi.org/10.24042/ijecs.v1i2.10617.

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COVID-19 is a virus that can spread through objects and depending on environmental conditions. It can last for several hours without destroying structures or disintegrating. Due to the COVID-19 pandemic, people were restricted from going outside to buy essential goods. Based on these conditions, it is necessary to design an IoT-based virus-safe package receipt box that is intuitive and comfortable for users to use, whether sending or receiving packages. People can control the system via remote control. Sterilization is carried out intelligently by considering the packet received. Design and co

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Cortés, Jesús, Henar Herrero, and Francisco Pla. "A Galerkin/POD Reduced-Order Model from Eigenfunctions of Non-Converged Time Evolution Solutions in a Convection Problem." Mathematics 10, no. 6 (2022): 905. http://dx.doi.org/10.3390/math10060905.

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A Galerkin/POD reduced-order model from eigenfunctions of non-converged time evolution transitory states in a problem of Rayleigh–Bénard is presented. The problem is modeled in a rectangular box with the incompressible momentum equations coupled with an energy equation depending on the Rayleigh number R as a bifurcation parameter. From the numerical solution and stability analysis of the system for a single value of the bifurcation parameter, the whole bifurcation diagram in an interval of values of R is obtained. Three different bifurcation points and four types of solutions are obtained with

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Lagarda-Leyva, Ernesto A., Luis E. Hernández-Valdez, and Alfredo Bueno-Solano. "System Dynamics Modeling: Technological Solution to Evaluating Cold-Chain Meat Packaging Scenarios." Systems 12, no. 11 (2024): 503. http://dx.doi.org/10.3390/systems12110503.

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A cold-chain meat packaging project was developed for a meat product company in northwestern Mexico that moves high volumes of fresh meat into national and international markets. The objective of the present research is to evaluate the supply process for three types of thermo-shrinkable polyethylene bags to provide a technological solution for high-volume meat packaging based on a graphical user interface. A system dynamics (SD) methodology is developed in seven stages to generate a technological solution: (1) system mapping; (2) causal diagram construction; (3) stock, flow modeling, and equat

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Nnaji, P. C., B. I. Okolo, and O. D. Onukwuli. "Luffa cylindrica seed: Biomass for wastewater treatment, sludge generation study at optimum conditions." Chemical Industry and Chemical Engineering Quarterly, no. 00 (2020): 12. http://dx.doi.org/10.2298/ciceq190623012n.

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A Box-Behnken design implementing response surface methodology was employed to investigate the sludge generation and removal of pollutants from textile wastewater using Luffa cylindrica seed powder (LCSP) in their natural form as biomass in the coag-flocculation process. With colour/total suspended solids (CTSS) removal, chemical oxygen demand (COD) removal and sludge volume index (SVI) as the three responses, the three quadratic models of three variables including LCSP dosage, solution pH and stirring time were developed. The optimal conditions determined by the combination of the three desir

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Rajalakshmi M, Jayasurya C, Pradeep C, Suganth S, and Mohamed Abdur Rahman I. "IoT based Medicine Box Assistance for Elderly People." International Research Journal on Advanced Engineering and Management (IRJAEM) 6, no. 07 (2024): 2157–63. http://dx.doi.org/10.47392/irjaem.2024.0316.

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This system addresses the issue of medication adherence by providing timely reminders for patients to take their prescribed medication and ensuring only authorized users access the medication box. Combining physical and digital reminders, it offers a solution suitable for individuals of all ages, particularly on aiding elderly individuals who are prone to forgetting their medication schedules. Emphasizing ease of use and cost-effectiveness, the system integrates microcontroller technology, IoT systems, Facial recognition and an alarm system to prompt patients to take their medication as per th

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Yang, Lin, Stephen Antonelli, Shirish Chodankar, James Byrnes, Edwin Lazo, and Kun Qian. "Solution scattering at the Life Science X-ray Scattering (LiX) beamline." Journal of Synchrotron Radiation 27, no. 3 (2020): 804–12. http://dx.doi.org/10.1107/s1600577520002362.

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This work reports the instrumentation and software implementation at the Life Science X-ray Scattering (LiX) beamline at NSLS-II in support of biomolecular solution scattering. For automated static measurements, samples are stored in PCR tubes and grouped in 18-position sample holders. Unattended operations are enabled using a six-axis robot that exchanges sample holders between a storage box and a sample handler, transporting samples from the PCR tubes to the X-ray beam for scattering measurements. The storage box has a capacity of 20 sample holders. At full capacity, the measurements on all

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