DC Motor Control using Ant Colony Optimization

PID controller is a control loop feedback mechan'1sm widely used in industrial control systems. The PID controller calculation involves three separate parameters, proportional, integral and derivative values. Tuning of PID controller is done in order to achieve the desired performance for the motor. Practically, it is difficult to simultaneously achieve all the desirable qualities for the motor. Generally, There are several conventional and numeric controller types intended for controlling the DC motor as PID Controller, Fuzzy Logic Controller; PID-Particle Swarm Optimization, Ant colony optimization . In this project, micro DC motor manufactured by FAULHABER that's used for the application of a prosthetic leg is to be controlled by the PID based Ant colony optimization (ACO) controller. The first appearance of an ACO system was in a Ph.D. thesis in 1992 by Marco Dorigo at Politecnico di Milano. It was called Ant System (AS). Since 1995 various other extended versions of AS have been developed, induding Ant Colony System (ACS) and MAX-MIN Ant System (MMAS). In 1999 Dorigo proposed the Ant Colony Optimization (ACO) meta-heuristic that became the most successful and recognized algorithm based on ant behaviour [1]. A controlled prosthetic leg is chosen to be the application for this project. It's manufactured by the German company FAULHABER to help the disabled who lost a limb perform their daily activities normally. The motor used in this prosthetic leg is also manufactured by FAULHABER and it's a micro-motor to be light and reliable

Literature Review: Waiting Time and Patient Satisfaction Relationship

The patient waiting period in an outpatient facility may affect the satisfaction of patients and relies on other characteristics of the visit. This study examines how patient satisfaction is related to the period of waiting for medical attention in a healthcare facility. The study was undertaken in specialized clinics including family medicine. Data was collected by distributing structured questionnaires to patients in the outpatient clinics which included social demographics and patient satisfaction scores. Half of the total patients that participated in the study confirmed their satisfaction with waiting time. Comparably, the clinic of family medicine recorded better scores in waiting periods than other clinics. Besides, it was confirmed that patients treated in family medicine clinics recorded the highest scores in patient satisfaction. Although overall patient satisfaction was lower compared to previous pieces of literature, the study confirms that a reduced waiting period results in increased patient satisfaction and a greater likelihood of patients returning to the health facility.&nbsp

DC Motor Control using Ant Colony Optimization

PID controller is a control loop feedback mechan'1sm widely used in industrial control systems. The PID controller calculation involves three separate parameters, proportional, integral and derivative values. Tuning of PID controller is done in order to achieve the desired performance for the motor. Practically, it is difficult to simultaneously achieve all the desirable qualities for the motor. Generally, There are several conventional and numeric controller types intended for controlling the DC motor as PID Controller, Fuzzy Logic Controller; PID-Particle Swarm Optimization, Ant colony optimization . In this project, micro DC motor manufactured by FAULHABER that's used for the application of a prosthetic leg is to be controlled by the PID based Ant colony optimization (ACO) controller. The first appearance of an ACO system was in a Ph.D. thesis in 1992 by Marco Dorigo at Politecnico di Milano. It was called Ant System (AS). Since 1995 various other extended versions of AS have been developed, induding Ant Colony System (ACS) and MAX-MIN Ant System (MMAS). In 1999 Dorigo proposed the Ant Colony Optimization (ACO) meta-heuristic that became the most successful and recognized algorithm based on ant behaviour [1]. A controlled prosthetic leg is chosen to be the application for this project. It's manufactured by the German company FAULHABER to help the disabled who lost a limb perform their daily activities normally. The motor used in this prosthetic leg is also manufactured by FAULHABER and it's a micro-motor to be light and reliable

Microstructural analysis for Sn-Bi-Sb-In alloy prepared by rapid solidification

In the present study, Sn70-X at.% -Bi15 at.% -Sb15 at.%- Inx at.% alloy ( x= 0, 2, 4, 6), were prepared by melt spinning technique. Optical microscopy, scanning electron microscopy combined with energy dispersive X-ray analysis (SEM-EDX), X-ray diffraction analysis (XRD), and Vickers microhardness (Hv); were used to characterize the phase transformation and the microstructure evolution. The results contribute to the understanding of the microstructure evolution in alloys of the type prepared by melt spinning technique. This work reports on a comparative study of the rapidly solidified, in order to compare the microhardness and microstructural analysis

Characterization of Indium addition on Sn-Bi-Sb Lead free Solder alloy

The aim of these work is to measure the effect of the addition of In with different atomic percent weight on structure, melting, Electrical and mechanical properties of Sn70-X at.% -Bi15 at.% -Sb15 at.%- Inx at.% rapidly solidified. X-ray diffraction analysis (XRD), differential scanning calorimetry (DSC), temperature dependence of resistivity (TDR), and mechanical resonance method are performed. It's found that electrical conductivity (σ) and thermal conductivity (K) increased gradually by increasing In at.%. Melting temperature reduced from 470.12 K for Sn70 at.%- Bi15 at.%- Sb15 at.% to 427.13 K in Sn61 at.%- Bi15 at.%- Sb15 at.%- In9 at.%. Also, elastic moduli, internal friction and thermal diffusivity measured from melt-quenched ribbons

Effects of dietary inclusion of sun-dried or roasted stranded fish on egg-type pullet growth and egg laying of hens

     The objective of the study was to measure the effect of the substitution of imported super concentrate by different levels of locally produced fishmeal on pullet’s growth and egg laying performance. Different types of stranded fish from the White Nile, Sudan, were collected during March and April 2017, ground and then sun-dried (A) or roasted (B). The experimental diets were iso-energetic and iso-nitrogenous to meet or exceed the requirements of pullets growing phases (starter, grower and developer) and laying. The dried or roasted fish (fishmeal) were used to replace the imported protein concentrates at three levels. The sun-dried fish (A) consisted of A1 with 1.5% locally sun-dried fishmeal (L.S.F) and 3.5% imported concentrate (I.C.), A2 with 3.5 % (L.S.F) and 1.5% (I.C) and A3 with 5 % (L.S.F) and 0% (I.C). Similarly, the roasted fish (B) consisted of B1 with 1.5 % locally roasted fishmeal (L.R.F) and 3.5% (I.C.), B2 with 3.5 % (L.R.F) and 1.5 % (I.C) and B3 with 5 % (L.R.F) and 0 % (I.C). The control diet contained 0% local fishmeal (C). A total of 210 one day-old (Hy-Line W-98) pullets were allotted to these seven treatments which were replicated three times with ten birds each. The results showed that at the end of the entire growing period, birds fed the sun-dried fishmeal (A) had the highest body weight, weight gain and feed consumption followed by birds fed on (B) diets. The birds fed on control diets (C) consumed numerically the least feed and had the lightest body weight. The highest body weight and weight gain values were recorded with A1 treatment.  At the end of the starter period, the birds fed with B1, B2 and A3 had the lowest levels of blood cholesterol. The birds fed the control and B1 diets had the highest blood cholesterol. At the end of developer period, cholesterol, triglyceride, uric acid and calcium were not significantly affected by treatments. There were no significant differences between sun-dried and roasted fish in hen-day egg production during early weeks of production, however, hens fed the control diet produced less eggs compared with sun-dried treatments during the early production period. It is recommended to replace the super concentrate with 70% sun-dried fish

Obstetric and haematological management and outcomes of women with placenta accreta spectrum by planned or urgent delivery : Secondary data analysis of a public referral hospital in Lebanon

We would like to thank Rafik Hariri University Hospital for providing the data for this studyPeer reviewe

Pancreas divisum. Correlation between anatomical abnormalities and bile precipitation in the gallbladder in seven patients

Pancreas divisum is a genetic defect associated with recurrent acute pancreatitis due to insufficient drainage of the accessory pancreatic duct. Seven young patients diagnosed with pancreatic divisum and thickening of the gallbladder bile as shown on magnetic resonance cholangio-pancreatography without pancreatic ductal changes underwent laparoscopic cholecystectomy. During the mean follow-up of 32 months no episode of pancreatitis was reported. There is an association between PD and higher concentration of bile in the gallbladder. Cholecystectomy can be considered curative in patients with PD in the absence of indications for major surgery

Whole genome sequencing for mutation discovery in a single case of lysosomal storage disease (MPS type 1) in the dog.

Mucopolysaccharidosis (MPS) is a metabolic storage disorder caused by the deficiency of any lysosomal enzyme required for the breakdown of glycosaminoglycans. A 15-month-old Boston Terrier presented with clinical signs consistent with lysosomal storage disease including corneal opacities, multifocal central nervous system disease and progressively worsening clinical course. Diagnosis was confirmed at necropsy based on histopathologic evaluation of multiple organs demonstrating accumulation of mucopolysaccharides. Whole genome sequencing was used to uncover a frame-shift insertion affecting the alpha-L-iduronidase (IDUA) gene (c.19_20insCGGCCCCC), a mutation confirmed in another Boston Terrier presented 2 years later with a similar clinical picture. Both dogs were homozygous for the IDUA mutation and shared coat colors not recognized as normal for the breed by the American Kennel Club. In contrast, the mutation was not detected in 120 unrelated Boston Terriers as well as 202 dogs from other breeds. Recent inbreeding to select for recessive and unusual coat colors may have concentrated this relatively rare allele in the breed. The identification of the variant enables ante-mortem diagnosis of similar cases and selective breeding to avoid the spread of this disease in the breed. Boston Terriers carrying this variant represent a promising model for MPS I with neurological abnormalities in humans