Design of Carry Select Adder using BEC and Common Boolean Logic

Carry Select Adder (CSLA) is known to be the fastest adder among the conventional adder structure, which uses multiple narrow adders. CSLA has a great scope of reducing area, power consumption, speed and delay. From the structure of regular CSLA using RCA, it consumes large area and power. This proposed work uses a simple and dynamic Gate Level Implementation which reduces the area, delay, power and speed of the regular CSLA. Based on a modified CSLA using BEC the implementation of 8-b, 16-b, 32-b square root CSLA (SQRT CSLA) architecture have been developed. In order to reduce the area and power consumption in a great way we proposed a design using binary to excess 1 converter (BEC). This paper proposes an dynamic method which replaces a BEC using Common Boolean Logic.

Efficacy of organic peroxyacids for eliminating biofilm preformed by microorganisms isolated from dairy processing plants

The aim of this study was to evaluate the ability of microorganisms isolated from the dairy industry to form biofilms and to investigate the efficacity of organic peroxyacids (peracetic, perpropionic and perlactic acids and BioDestroy®) to eradicate those biofilms. Eighteen microorganisms were isolated from Quebec dairy processing plants that have issues associated with biofilm formation and were presumptively identified by MALDI-TOF mass spectrometry. The single-species biofilm-producing ability of the isolates was then evaluated using 96-well microplates. Eight out of eighteen (8/18) of these isolates were identified as moderate or strong biofilm producers, and ten out of eighteen (10/18) resulted as negative or weak biofilm producers. The efficacy of above-mentioned disinfectants was tested on the stronger biofilm producing bacteria using the MBEC (Minimum Biofilm Eradication Concentration) assay. After 5 min, all the disinfectants tested successfully eradicated both the single and mixed biofilms when applied following the recommended concentration. However, the efficacy of organic peroxyacids was significantly variable at lower concentrations. For example, 25 ppm of BioDestroy® were sufficient to eradicate all the biofilms, except for Pseudomonas azotoformans PFl1A. Unfortunately, microscopic observations highlighted those dead cells were still attached to the surfaces. In conclusion, our results suggest that some microorganisms found in dairy plants can produce tenacious biofilms that are, however, still susceptible to disinfectants, including organic peroxyacids. Further studies would be needed in order to confirm these observations using a dynamic method to mimic in vivo conditions. IMPORTANCE Biofilm forming microorganisms are a major issue in the food industry, including dairy industry, because of their negative impact on products quality. Biofilms are difficult to remove by clean-in-place (CIP) procedures commonly used in processing plants and may be less sensitive to sanitizers. Therefore, it is important to identify these microorganisms, in order to develop biofilm control strategies. The results gathered in the present study could contribute to this aim, even though it was carried out using only static methods.

Kajian Penentuan Nilai Epsilon Optimal Pada Algoritma DMDBSCAN Dan Pemetaan Daerah Rawan Gempa Bumi Di Indonesia Tahun 2014-2020

Area pengawasan gempa bumi dapat dilakukan dengan menemukan penyebaran poin gempa atau pengelompokan gempa acak. Density-Based Spatial Clustering of Applications with Noise (DBSCAN) adalah salah satu algoritma clustering yang disegel dari sejumlah data besar yang mengandung noise atau outlier. Penelitian sebelumnya mengubah Algoritma DBSCAN untuk secara otomatis menemukan nilai Epsilon (Eps) optimal dengan menggunakan metode Algoritma Dynamic Method DBSCAN (DMDBSCAN). Nilai parameter Eps diperoleh dari perhitungan perubahan slope atau kemiringan garis maksimum pada 3 jarak dari tetangga paling dekat dalam distribusi data. Namun, cara ini rentan terhadap perubahan kemiringan garis yang sangat jauh. Maka dari itu, penelitian ini melakukan modifikasi cara tersebut dengan mencari nilai minimal pada rentang slope antara 10% hingga 20%. Nilai Eps yang dihasilkan setelah modifikasi menunjukkan angka yang lebih baik. Oleh karena itu, cara ini diharapkan dapat menjadi referensi untuk pencarian parameter Eps dalam Algoritma DMDBSCAN yang lebih cocok dan mengetahui distribusi titik gempa di Indonesia.

Estimation of Vehicle Longitudinal Speed Based on Improved Kalman Filter

Estimation of vehicle longitudinal acceleration is very important in vehicle active safety control system. In this paper, two driving conditions of a 4WD off-road vehicle are divided by vehicle signals such as steering angle. Under different working conditions, different estimation algorithms are adopted. In the straight driving condition, the longitudinal speed was estimated by adjusting the variance weight of acceleration Kalman observation noise based on kinematics method. For steering conditions, in order to obtain the longitudinal velocity at the center of mass, by dynamic method, a lateral state estimator was designed and tire sideslip dynamics was modeled. The CarSim-Simulink co-simulation results show that the proposed algorithm has high accuracy and strong practicability.

Mathematical model of gas dynamics of a nozzle channel with a gas-dynamic method of thrust vector control using a porous insert

The ability to change the magnitude and direction of the thrust vector is a fundamental parameter of the propulsion systems of aircraft. A wide range of methods for controlling these quantities has been developed, which are used depending on the design schemes. The article discusses the organization of the gas-dynamic method of thrust vector control, carried out using distributed gas injection through a porous insert.