Since the establishment of the quantum mechanics, researchers in physics have been studying superposition states and especially proposing setups for generating macroscopic objects in a quantum superposition state. Such states are important and of interest both from a foundational perspective and for their applications in the emerging quantum technologies. Here, we propose a circuit quantum electrodynamical setup and an adiabatic scheme for preparing a macroscopic and massive object in a quantum superposition state. The scheme is based on establishing a spatial double-well potential for a macroscopic object and preparing it in the ground state of the potential via an adiabatic transition. The resulting state is a spatial superposition state where the object assumes a superposition of bulked to two opposite directions, e.g. right and left. By numerical solving of the quantum optical master equation and including the environmental effects, we show that the target cat state is achievable with a high fidelity provided the process satisfies the adiabaticity conditions.

We propose a robust scheme, using tripod stimulated Raman adiabatic passage, to generate one-qubit rotation gate. In this scheme, a four-level atom interacts with three resonant laser pulses and time evolution of the corresponding coherent system is designed such that the rotation gate is implemented at the end of process. Rotation angle in this gate is holonomic and has a geometrical basis in the parameter space. We also explore the effect of spontaneous emission on the population transfer with numerical solution of Schrödinger and Liouville equations.

A numerical study is performed to investigate the effects of shaped multi-hole on film cooling effectiveness over a flat plate. Hence a single cylindrical film cooling hole with 11.1 mm diameter is replaced with the shaped multi-hole (14 holes with 2.97 mm diameter) while maintaining constant blowing ratio. Numerical simulations are performed at a fixed density ratio of 1.6, length-to-diameter of 4 and an inclined angle of 35o. Two configurations of hook and fan shapes are considered for multi-hole. The control-volume method with a semi-implicit method for pressure linked equations-consistent algorithm has been used to solve the steady-state Reynolds-averaged Navier–Stokes equations. The k-ε model is applied for modeling the turbulent flow and heat transfer field. It is found that replacing a single hole with the shaped multi-hole leads to a considerable increase in the film cooling effectiveness in both axial and lateral directions. Results of the present study show that for blowing ratio of 0.6, the hook shape and fan shape configurations of multi-hole, provide a higher area-averaged film cooling effectiveness by 48% and 58.2% more than the single hole respectively.

Purpose: The purpose of this applied research is to study the effectiveness of gamification on corporate training.  Methodology: A gamified course was designed and implemented to train the location of Fire Hosing Cabinet for 24 employees of a firefighting maintenance company in Iran Mall shopping Center in Tehran. Using a quantitative quasi-experimental research plan (post-test only control group design) the participants of the study were randomly assigned to treatment (12) and control (12) groups and trained for a week.  Conclusion: The descriptive and interpretive result of the posttest analyses indicated the effectiveness of gamification of the training performed for the employees of the firefighting maintenance company in Iran Mall shopping Center in Tehran. Moreover, the descriptive result of Gamification Acceptance Questionnaire answered by the members of the experimental group after gamified training indicated that all the participants in the experimental group were satisfied with the gamified training course.

In energy supply applications for low-power sensors, there are cases where energy should be transmitted from a low-power battery to an output stage load capacitor. This paper presents an adiabatic charging circuit with a parallel switches approach that connects to a low-power battery and charges the load capacitor using a buck converter which operates in continuous conduction mode (CCM). A gate controller of parallel switches (GCPS) is used to increase the duty-cycle of the input signal of buck converter switches, which controls the inductor current and charges the load capacitor in 256 steps. The proposed parallel switches approach is used to improve the energy efficiency under different powers transmission and comprises a current sensor, comparator, R-S latch, parallel pMOS switches, and parallel nMOS switches. For high powers transfer, the large switches are paralleled with small switches and result in conduction losses reduction. Also, for low powers transfer, the total switching losses are significantly reduced by turning off the large PMOS/NMOS switches during the charging operation. The proposed circuit was designed and simulated in a 0.18μm CMOS technology. The efficiency of the proposed circuit during the capacitor charge-up cycle is more than 80% for average input powers between 0.5mW to 30mW.

In the present paper, spatial linear stability of adiabatic laminar flat plate boundary layer is computed numerically. This work is interested on the non-parallel compressible flow for a two-dimensional (2D) and three-dimensional (3D) disturbances. Stability diagrams, in the form of curves of constant spatial amplification rates are presented and constitute the original contribution of this paper. However, to assess the validity of the present computations, some important results of parallel flow stability are presented in the convenient and familiar form of contours of constant spatial amplification rates for both 2D and 3D waves in the Mach number range Me= 0. 9 to 2. 2. Comparisons results for the parallel flow agree with those obtained by Mack and Wazzan, Taghavi and Keltner, but differ from the nonparallel flow giving some important spatial stability results and showing the importance of the wave angle ψ and the Mach number, even the stability diagrams presented in this paper concerned the Reynolds number gives different results for the parallel and nonparallel flows.

Film cooling protects high-temperature components and generates complex vortex structures through the interaction between the mainstream flow and the injected coolant. Additionally, the process of applying thermal barrier coatings introduces imperfect cooling holes. A numerical simulation study is conducted on two geometric configurations: inclined perfect and imperfect holes arranged in a single row on a flat plate to investigate the effects of flow field vortex structures and hole imperfections. The k-epsilon turbulent model is employed to analyse the impact of varying blowing ratios and defect positions on flow field structure and cooling efficiency, with vortex dynamics providing explanatory insights. As the blowing ratio increases, the kidney vortex associated with the perfect holes progressively detaches from the wall, reducing film cooling efficiency. The kidney vortex originates from the shear interaction between the mainstream and the impinging jet, predominantly influenced by the vortex stretching component. Imperfect holes influence the distribution state of the kidney vortex, with weakened roll-up phenomena observed at the IT4 defect location. Consequently, a noticeable enhancement in film cooling effectiveness is achieved near the proximal end of the hole.

In any adiabatic quantum computation, there exist an initial state that must be used in the corresponding quantum algorithm. In this paper, the relation between an initial state and allowed energy level of an implemented generalized Deutsch’s algorithm is investigated. To study the generalized Deutsch’s algorithm, a compacted form for the output states of the algorithm is obtained. It has been shown that one can prepare the initial states in such a way that control the minimum of energy. By using numerical methods, the minimum values of allowed energy levels for the initial state are obtained. Also, to study the dynamics of the system is chosen. The corresponding Hamiltonian for the algorithm is obtained and it has been shown that one of the energy levels describes a binding state.