Noora Ali - Academia.edu (original) (raw)
Papers by Noora Ali
Bulletin of Electrical Engineering and Informatics
Most of the medical datasets suffer from missing data, due to the expense of some tests or human ... more Most of the medical datasets suffer from missing data, due to the expense of some tests or human faults while recording these tests. This issue affects the performance of the machine learning models because the values of some features will be missing. Therefore, there is a need for a specific type of methods for imputing these missing data. In this research, the salp swarm algorithm (SSA) is used for generating and imputing the missing values in the pain in my ass (also known Pima) Indian diabetes disease (PIDD) dataset, the proposed algorithm is called (ISSA). The obtained results showed that the classification performance of three different classifiers which are support vector machine (SVM), K-nearest neighbour (KNN), and Naïve Bayesian classifier (NBC) have been enhanced as compared to the dataset before applying the proposed method. Moreover, the results indicated that issa was performed better than the statistical imputation techniques such as deleting the samples with missing ...
Hjärtvikt är en vanligt förekommande kronisk sjukdom i Sverige som ger symtomen trötthet, andfådd... more Hjärtvikt är en vanligt förekommande kronisk sjukdom i Sverige som ger symtomen trötthet, andfåddhet och ben svullnader. Personers förmåga att utöva en god egenvård är en mycket viktig del, och kan öka livskvalitén och överlevnaden vid hjärtsvikt. Litteraturgenomgången tyder på att det hos vissa personer med hjärtsvikt finns en bristande förmåga att utöva egenvård. Syfte: Att beskriva och identifiera vilka faktorer som påverkar personers egenvård vid hjärtsvikt. Metod: En litteraturöversikt med kvalitativ ansats utfördes. Totalt 10 studier granskades och analyserades med hjälp av Fribergs femstegsmodell. Resultat: Ur granskningen och analysen kom fem subteman fram som sedan delades in i två huvudteman. Huvudteman blev sociala faktorer och hälsofaktorer. Resultatets underteman blev miljöfaktorer, erfarenhet och kunskap, relationer och stöd, emotionella uttryck samt fysiologiska faktorer. Några av de faktorer som redovisades i resultatets olika underteman var ålder, tillgänglighet, ne...
Journal of Mathematical Extension, Apr 2, 2010
Using the concept of possibility proposed by zadeh, luhandjula ([4,8]) and buckley ([1]) have pro... more Using the concept of possibility proposed by zadeh, luhandjula ([4,8]) and buckley ([1]) have proposed the possibility programming. The formulation of buckley results in nonlinear programming problems. Negi [6]re-formulated the approach of Buckley by the use of trapezoidal fuzzy numbers and reduced the problem into fuzzy linear programming problem. Shih and Lee ([7]) used the Negi approach to solve a minimum cost flow problem, whit fuzzy costs and the upper and lower bound. In this paper we shall consider the general form of this problem where all of the parameters and variables are fuzzy and also a model for solving is proposed.
International Journal of Health Sciences and Research, 2022
Neuroleptic Malignant Syndrome (NMS) is a relatively rare adverse reaction to neuroleptic medicat... more Neuroleptic Malignant Syndrome (NMS) is a relatively rare adverse reaction to neuroleptic medications. It is characterized by a constellation of findings that usually occur concurrently. These include vital instability, fever, elevated creatinine kinase, encephalopathy, and muscle rigidity. Having a high index of suspicion can reduce mortality and long-term complications by having a broad differential diagnosis when facing a patient with these symptoms, particularly if they are on antipsychotic medications. Withdrawal of the offending medication and supportive therapy are the most important initial steps in patient management. In this case report, we discuss the case of a 95-year-old male on quetiapine and memantine with a 2-day history of fever, rigidity, cough, and reduced activity after increasing the dose of quetiapine three days prior to his presentation. Key words: Neuroleptic malignant syndrome, Antipsychotics, Neuroleptics, Muscle rigidity Creatinine Kinase.
SSRN Electronic Journal, 2021
Cureus, 2022
Distal radius fractures are common pediatric orthopedic injuries accounting for 25% of all fractu... more Distal radius fractures are common pediatric orthopedic injuries accounting for 25% of all fractures with a significant incidence in the age group 10-14 years. This study aims to evaluate the operative and nonoperative methods of treating distal radius fractures in children. Methods This is a retrospective cohort study conducted on 176 children with distal radius fracture. We studied the operative and non-operative treatments of all children presented with distal radius fracture to the emergency department of the Bahrain Defense Force (BDF) Hospital from January 1, 2015, to February 1, 2022. The inclusion criteria were as follows: age of 17 years or younger, distal radius fracture with or without complete displacement and skeletal immaturity managed as of non-operative or operative groups. Patients who did not have follow-up data after the date of surgery were excluded. The statistical analysis was performed using the software SPSS version 23.0 (IBM Corp., Armonk, NY). Continuous data expressed as mean, standard deviation and discrete variables were expressed as frequency and percentages. One-way Analysis of Variance (ANOVA) was used to compare the continuous variables between groups. The Student's t-test was used for the two-group comparison. For the comparison of discrete variables, a Chi-Square test or Fisher's exact test was used. Results Seventy-seven patients were conservatively managed with cast immobilization ("non-operative" group) in comparison to 99 patients who were surgically managed ("operative" group) with either percutaneous pinning (n=56) or flexinail (n=43). Fewer patients underwent physiotherapy in the operative group with 14 (25.0%) patients for percutaneous pinning and seven (16.3%) patients for flexinail versus 31 (40.3%) patients in the non-operative group (p<0.015). There were statistically significant differences in radial inclination (p<0.001) between conservative and percutaneous pinning (22.22±2.86 vs 18.76±3.33 degrees) and percutaneous pinning and flexinail (18.76±3.33 vs 22.37±3.44 degrees). Likewise, there was a significant difference found in ulnar variance between conservative and percutaneous pinning (-0.45±2.14 mm vs-1.47±1.93 mm, p=0.012) and conservative and flexinail (-0.45±2.14 mm vs-1.59±1.90 mm, p=0.009). There were a total of 25 documented complications. Nineteen (19.8%) complications occurred in the non-operative group versus five (7.2%) and one (2.3%) complications in percutaneous pinning and flexinail groups, respectively (p=0.003). The most common complication in the non-operative group was loss of reduction while in cast and subsequent need for surgical intervention. Ten of these patients underwent percutaneous pinning whereas nine were fixed by flexinail. Conclusion This study illustrated an overall similar success between the surgical and the conservative treatments of distal radius fractures in children. Due to the higher complication rate reported in the conservative group, the conservative treatment cannot be considered safer than the surgical treatment.
Pacific Journalism Review – Te Koakoa, Sep 1, 2001
Saudi Journal of Emergency Medicine, 2020
Pacific Journalism Review, 2001
Review(s) of: Fiji waves, produced/directed by Natalie Gouln, Canadian television documentary, 57... more Review(s) of: Fiji waves, produced/directed by Natalie Gouln, Canadian television documentary, 57min, 2001, Montreal, Quebec: Ecran Total.
The initial response to infection always involves the innate immune system, which consists of a v... more The initial response to infection always involves the innate immune system, which consists of a variety of cell types and factors. The inflammatory response causes vasodilation thus increased vascular permeability. This facilitates the recruitment of cells with the bloodstream. If the infection is not resolved, the second procedure of the immune system, the specific immune system recruits special cells and mediators to fight the infection. Regarding the acute immune response to exercise, a variety of mechanisms are involved, including exercise-induced changes in stress hormone and cytokine concentrations, elevated body temperature, increases in blood flow and dehydration. Following prolonged running at high intensity, cortisol concentrations are significantly higher than control levels for several hours. Glucocorticoids can cause increased neutrophils, low numbers of eosinophils, lymphocytopenia and a reduction of both NK and T-cells, all of which happen after prolonged, high-intens...
Hjartvikt ar en vanligt forekommande kronisk sjukdom i Sverige som ger symtomen trotthet, andfadd... more Hjartvikt ar en vanligt forekommande kronisk sjukdom i Sverige som ger symtomen trotthet, andfaddhet och ben svullnader. Personers formaga att utova en god egenvard ar en mycket viktig del, och kan ...
University of Thi-Qar Journal, 2019
In this work, the solid PCF are studied, where the solid core was surrounded by a number of holes... more In this work, the solid PCF are studied, where the solid core was surrounded by a number of holes with a diameter d away from each other by distance. The strange behavior of dispersion with the presence of nonlinear phenomenon such as: self-phase modulation, self-steepening and stimulated Raman scattering allows the formation of higher order solitons in a short distance range (1 2)cm . The study of SCG has been done by the numerical solution for the generalized propagation equation, where the Fourier transform method is used to solve the linear part and Runge-Kutta method to solve the nonlinear part. Higher order soliton means the possibility of soliton fission to the fundamental solitons and emissions the dispersive wave, this means the formation SCG. The SCG has been affected by each of: width, power and wavelength of the input pulses. On the other side, it is also affected by the fiber parameters d and that in turn controls the zero dispersion wavelength 0 , where the conditions 0 () and 0 () form bright soliton and dark soliton, respectively.
Journal of the Bahrain Medical Society, 2020
Background: Sleep quality is influenced adversely or favorably by various intrinsic and extrinsic... more Background: Sleep quality is influenced adversely or favorably by various intrinsic and extrinsic factors and sleep deprivation is a common problem facing doctors. Objectives: To assess the sleep quality and estimate the prevalence of excessive daytime sleepiness among physicians with on-call duties. Methods: This cross-sectional seven-month study included a total of 62 doctors working at the Bahrain Defense Force Hospital (BDF) with on-call duties. Data were collected using the Pittsburgh Sleep Quality Index (PSQI) questionnaire and the Epworth sleepiness scale (ESS). Results: The mean Global Score of PSQI in the analyzed sample was 8.34 (95% CI: 7.35-9.33). The prevalence rate of poor sleep quality (PSQI >5) was 77.4%. Logistic regression analysis showed that poor sleep quality was associated with female gender and doctors' ranks, as 54.2% of female doctors and 62.5 % of junior doctors reported poor sleep quality. No significant association was seen between number of calls per month and sleep quality. The mean of ESS scores among participants was 8.87 out of 24. No significant correlation was found between ESS scores and sociodemographic factors. Conclusion: Sleep disturbance was mostly seen among female and junior resident doctors. More studies are warranted to highlight this issue.
NeuroQuantology, 2020
In this paper, some properties of optical fiber have been studied numerically by changing the val... more In this paper, some properties of optical fiber have been studied numerically by changing the values of graded-index as non-integer numbers using the finite element method (FEM) in the COMSOL environment. The results showed that the small graded orders gives a strange properties, such as a great value at nonlinearity and a new forms of dispersion relation are obtained. The paper enables us to choose the graded order and wavelength to achieve the desired values of dispersion and nonlinearity.
Pacific Journalism Review : Te Koakoa, 2001
Election fever and news ways of campaigning were a colourful part of the 2001 Fiji elections. Wit... more Election fever and news ways of campaigning were a colourful part of the 2001 Fiji elections. With the elections came innovative ways from the media industry in educating people and making them aware of issues.
SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019, 2019
In this paper, octagonal-photonic crystal fiber (O-PCF) has been proposed for studying liquid typ... more In this paper, octagonal-photonic crystal fiber (O-PCF) has been proposed for studying liquid types for sensing applications. The propagation properties for the proposed O-PCF were studied numerically by utilizing full-vector finite element method (FV-FEM) using COM SOL M ultiphysics version 5.1. The confinement loss, the relative sensitivity, and the nonlinearity coefficient can be controlled by changing the factors related with the geometry such as the cladding in a range of wavelength, air hole diameter, and the core pitch. The proposed O-PCF is realized with three rings from the air hole in the cladding and two circular rings in the core region. Numerical simulation of the proposed structure is achieving the highest sensitivity by increasing the diameter of the air hole the cladding, while the pitch remains constant. At the same time, the confinement losses have distinguishable decrease with an increase in diameter as well as an increase in the number of rings within the cladding layer. In addition, the effective area and the nonlinear coefficient each of them is affected with every hole of the diameter and with the type of the chemical material used. The proposed model shows that the fiber is of a high efficiency not only in the sensing application, but also being distinguishable with the nonlinear optical application.
Journal Port Science Research, 2019
Identify level of The Future anxiety, in the fees of students displaced by measuring the level of... more Identify level of The Future anxiety, in the fees of students displaced by measuring the level of anxiety, on a gauge Abraham Maslow. Analysis of the fees of the IDP students on the fee analysis form. The sample consisted of (32) students from the preparatory stage, the researchers used the psychological security measure consisting of (47) paragraph, and the tool to analyze the fees of students and the (7) Of the technical characteristics, have been achieved honesty and consistency, and reached the results, including. The low level of feeling of psychological security among the students was evident in their drawings because of the influence of the conditions experienced by the student during the period of terrorism. In the light of the results, recommendations and suggestions were reached
Clinical ophthalmology (Auckland, N.Z.), 2017
Dry eye disorder is a multifactorial disease of the tears and ocular surface that results in disc... more Dry eye disorder is a multifactorial disease of the tears and ocular surface that results in discomfort and visual disturbance. Corneal pachymetry becomes increasingly important in refractive surgery, for the accurate assessment of intraocular pressure, and in the preoperative assessment of other ocular surgeries. To assess the effect of dry eye disorder on the central corneal thickness (CCT) by comparing with CCT of normal eyes of age-matched individuals. The total number of eyes examined was 280 (140 dry eyes from 70 patients and 140 normal eyes from 70 individuals). Pentacam (Scheimpflug imaging system) was used for measuring the CCT of all eyes. Patients with dry eye syndrome had significantly lower CCT compared to the control group (P<0.01). Its mean was 536.5 versus 561.3, respectively. CCT of dry eyes was significantly reduced when compared with age- and gender-matched population. This result can be attributed to chronic desiccation by the inflammatory mediators in dry eye...
Bulletin of Electrical Engineering and Informatics
Most of the medical datasets suffer from missing data, due to the expense of some tests or human ... more Most of the medical datasets suffer from missing data, due to the expense of some tests or human faults while recording these tests. This issue affects the performance of the machine learning models because the values of some features will be missing. Therefore, there is a need for a specific type of methods for imputing these missing data. In this research, the salp swarm algorithm (SSA) is used for generating and imputing the missing values in the pain in my ass (also known Pima) Indian diabetes disease (PIDD) dataset, the proposed algorithm is called (ISSA). The obtained results showed that the classification performance of three different classifiers which are support vector machine (SVM), K-nearest neighbour (KNN), and Naïve Bayesian classifier (NBC) have been enhanced as compared to the dataset before applying the proposed method. Moreover, the results indicated that issa was performed better than the statistical imputation techniques such as deleting the samples with missing ...
Hjärtvikt är en vanligt förekommande kronisk sjukdom i Sverige som ger symtomen trötthet, andfådd... more Hjärtvikt är en vanligt förekommande kronisk sjukdom i Sverige som ger symtomen trötthet, andfåddhet och ben svullnader. Personers förmåga att utöva en god egenvård är en mycket viktig del, och kan öka livskvalitén och överlevnaden vid hjärtsvikt. Litteraturgenomgången tyder på att det hos vissa personer med hjärtsvikt finns en bristande förmåga att utöva egenvård. Syfte: Att beskriva och identifiera vilka faktorer som påverkar personers egenvård vid hjärtsvikt. Metod: En litteraturöversikt med kvalitativ ansats utfördes. Totalt 10 studier granskades och analyserades med hjälp av Fribergs femstegsmodell. Resultat: Ur granskningen och analysen kom fem subteman fram som sedan delades in i två huvudteman. Huvudteman blev sociala faktorer och hälsofaktorer. Resultatets underteman blev miljöfaktorer, erfarenhet och kunskap, relationer och stöd, emotionella uttryck samt fysiologiska faktorer. Några av de faktorer som redovisades i resultatets olika underteman var ålder, tillgänglighet, ne...
Journal of Mathematical Extension, Apr 2, 2010
Using the concept of possibility proposed by zadeh, luhandjula ([4,8]) and buckley ([1]) have pro... more Using the concept of possibility proposed by zadeh, luhandjula ([4,8]) and buckley ([1]) have proposed the possibility programming. The formulation of buckley results in nonlinear programming problems. Negi [6]re-formulated the approach of Buckley by the use of trapezoidal fuzzy numbers and reduced the problem into fuzzy linear programming problem. Shih and Lee ([7]) used the Negi approach to solve a minimum cost flow problem, whit fuzzy costs and the upper and lower bound. In this paper we shall consider the general form of this problem where all of the parameters and variables are fuzzy and also a model for solving is proposed.
International Journal of Health Sciences and Research, 2022
Neuroleptic Malignant Syndrome (NMS) is a relatively rare adverse reaction to neuroleptic medicat... more Neuroleptic Malignant Syndrome (NMS) is a relatively rare adverse reaction to neuroleptic medications. It is characterized by a constellation of findings that usually occur concurrently. These include vital instability, fever, elevated creatinine kinase, encephalopathy, and muscle rigidity. Having a high index of suspicion can reduce mortality and long-term complications by having a broad differential diagnosis when facing a patient with these symptoms, particularly if they are on antipsychotic medications. Withdrawal of the offending medication and supportive therapy are the most important initial steps in patient management. In this case report, we discuss the case of a 95-year-old male on quetiapine and memantine with a 2-day history of fever, rigidity, cough, and reduced activity after increasing the dose of quetiapine three days prior to his presentation. Key words: Neuroleptic malignant syndrome, Antipsychotics, Neuroleptics, Muscle rigidity Creatinine Kinase.
SSRN Electronic Journal, 2021
Cureus, 2022
Distal radius fractures are common pediatric orthopedic injuries accounting for 25% of all fractu... more Distal radius fractures are common pediatric orthopedic injuries accounting for 25% of all fractures with a significant incidence in the age group 10-14 years. This study aims to evaluate the operative and nonoperative methods of treating distal radius fractures in children. Methods This is a retrospective cohort study conducted on 176 children with distal radius fracture. We studied the operative and non-operative treatments of all children presented with distal radius fracture to the emergency department of the Bahrain Defense Force (BDF) Hospital from January 1, 2015, to February 1, 2022. The inclusion criteria were as follows: age of 17 years or younger, distal radius fracture with or without complete displacement and skeletal immaturity managed as of non-operative or operative groups. Patients who did not have follow-up data after the date of surgery were excluded. The statistical analysis was performed using the software SPSS version 23.0 (IBM Corp., Armonk, NY). Continuous data expressed as mean, standard deviation and discrete variables were expressed as frequency and percentages. One-way Analysis of Variance (ANOVA) was used to compare the continuous variables between groups. The Student's t-test was used for the two-group comparison. For the comparison of discrete variables, a Chi-Square test or Fisher's exact test was used. Results Seventy-seven patients were conservatively managed with cast immobilization ("non-operative" group) in comparison to 99 patients who were surgically managed ("operative" group) with either percutaneous pinning (n=56) or flexinail (n=43). Fewer patients underwent physiotherapy in the operative group with 14 (25.0%) patients for percutaneous pinning and seven (16.3%) patients for flexinail versus 31 (40.3%) patients in the non-operative group (p<0.015). There were statistically significant differences in radial inclination (p<0.001) between conservative and percutaneous pinning (22.22±2.86 vs 18.76±3.33 degrees) and percutaneous pinning and flexinail (18.76±3.33 vs 22.37±3.44 degrees). Likewise, there was a significant difference found in ulnar variance between conservative and percutaneous pinning (-0.45±2.14 mm vs-1.47±1.93 mm, p=0.012) and conservative and flexinail (-0.45±2.14 mm vs-1.59±1.90 mm, p=0.009). There were a total of 25 documented complications. Nineteen (19.8%) complications occurred in the non-operative group versus five (7.2%) and one (2.3%) complications in percutaneous pinning and flexinail groups, respectively (p=0.003). The most common complication in the non-operative group was loss of reduction while in cast and subsequent need for surgical intervention. Ten of these patients underwent percutaneous pinning whereas nine were fixed by flexinail. Conclusion This study illustrated an overall similar success between the surgical and the conservative treatments of distal radius fractures in children. Due to the higher complication rate reported in the conservative group, the conservative treatment cannot be considered safer than the surgical treatment.
Pacific Journalism Review – Te Koakoa, Sep 1, 2001
Saudi Journal of Emergency Medicine, 2020
Pacific Journalism Review, 2001
Review(s) of: Fiji waves, produced/directed by Natalie Gouln, Canadian television documentary, 57... more Review(s) of: Fiji waves, produced/directed by Natalie Gouln, Canadian television documentary, 57min, 2001, Montreal, Quebec: Ecran Total.
The initial response to infection always involves the innate immune system, which consists of a v... more The initial response to infection always involves the innate immune system, which consists of a variety of cell types and factors. The inflammatory response causes vasodilation thus increased vascular permeability. This facilitates the recruitment of cells with the bloodstream. If the infection is not resolved, the second procedure of the immune system, the specific immune system recruits special cells and mediators to fight the infection. Regarding the acute immune response to exercise, a variety of mechanisms are involved, including exercise-induced changes in stress hormone and cytokine concentrations, elevated body temperature, increases in blood flow and dehydration. Following prolonged running at high intensity, cortisol concentrations are significantly higher than control levels for several hours. Glucocorticoids can cause increased neutrophils, low numbers of eosinophils, lymphocytopenia and a reduction of both NK and T-cells, all of which happen after prolonged, high-intens...
Hjartvikt ar en vanligt forekommande kronisk sjukdom i Sverige som ger symtomen trotthet, andfadd... more Hjartvikt ar en vanligt forekommande kronisk sjukdom i Sverige som ger symtomen trotthet, andfaddhet och ben svullnader. Personers formaga att utova en god egenvard ar en mycket viktig del, och kan ...
University of Thi-Qar Journal, 2019
In this work, the solid PCF are studied, where the solid core was surrounded by a number of holes... more In this work, the solid PCF are studied, where the solid core was surrounded by a number of holes with a diameter d away from each other by distance. The strange behavior of dispersion with the presence of nonlinear phenomenon such as: self-phase modulation, self-steepening and stimulated Raman scattering allows the formation of higher order solitons in a short distance range (1 2)cm . The study of SCG has been done by the numerical solution for the generalized propagation equation, where the Fourier transform method is used to solve the linear part and Runge-Kutta method to solve the nonlinear part. Higher order soliton means the possibility of soliton fission to the fundamental solitons and emissions the dispersive wave, this means the formation SCG. The SCG has been affected by each of: width, power and wavelength of the input pulses. On the other side, it is also affected by the fiber parameters d and that in turn controls the zero dispersion wavelength 0 , where the conditions 0 () and 0 () form bright soliton and dark soliton, respectively.
Journal of the Bahrain Medical Society, 2020
Background: Sleep quality is influenced adversely or favorably by various intrinsic and extrinsic... more Background: Sleep quality is influenced adversely or favorably by various intrinsic and extrinsic factors and sleep deprivation is a common problem facing doctors. Objectives: To assess the sleep quality and estimate the prevalence of excessive daytime sleepiness among physicians with on-call duties. Methods: This cross-sectional seven-month study included a total of 62 doctors working at the Bahrain Defense Force Hospital (BDF) with on-call duties. Data were collected using the Pittsburgh Sleep Quality Index (PSQI) questionnaire and the Epworth sleepiness scale (ESS). Results: The mean Global Score of PSQI in the analyzed sample was 8.34 (95% CI: 7.35-9.33). The prevalence rate of poor sleep quality (PSQI >5) was 77.4%. Logistic regression analysis showed that poor sleep quality was associated with female gender and doctors' ranks, as 54.2% of female doctors and 62.5 % of junior doctors reported poor sleep quality. No significant association was seen between number of calls per month and sleep quality. The mean of ESS scores among participants was 8.87 out of 24. No significant correlation was found between ESS scores and sociodemographic factors. Conclusion: Sleep disturbance was mostly seen among female and junior resident doctors. More studies are warranted to highlight this issue.
NeuroQuantology, 2020
In this paper, some properties of optical fiber have been studied numerically by changing the val... more In this paper, some properties of optical fiber have been studied numerically by changing the values of graded-index as non-integer numbers using the finite element method (FEM) in the COMSOL environment. The results showed that the small graded orders gives a strange properties, such as a great value at nonlinearity and a new forms of dispersion relation are obtained. The paper enables us to choose the graded order and wavelength to achieve the desired values of dispersion and nonlinearity.
Pacific Journalism Review : Te Koakoa, 2001
Election fever and news ways of campaigning were a colourful part of the 2001 Fiji elections. Wit... more Election fever and news ways of campaigning were a colourful part of the 2001 Fiji elections. With the elections came innovative ways from the media industry in educating people and making them aware of issues.
SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019, 2019
In this paper, octagonal-photonic crystal fiber (O-PCF) has been proposed for studying liquid typ... more In this paper, octagonal-photonic crystal fiber (O-PCF) has been proposed for studying liquid types for sensing applications. The propagation properties for the proposed O-PCF were studied numerically by utilizing full-vector finite element method (FV-FEM) using COM SOL M ultiphysics version 5.1. The confinement loss, the relative sensitivity, and the nonlinearity coefficient can be controlled by changing the factors related with the geometry such as the cladding in a range of wavelength, air hole diameter, and the core pitch. The proposed O-PCF is realized with three rings from the air hole in the cladding and two circular rings in the core region. Numerical simulation of the proposed structure is achieving the highest sensitivity by increasing the diameter of the air hole the cladding, while the pitch remains constant. At the same time, the confinement losses have distinguishable decrease with an increase in diameter as well as an increase in the number of rings within the cladding layer. In addition, the effective area and the nonlinear coefficient each of them is affected with every hole of the diameter and with the type of the chemical material used. The proposed model shows that the fiber is of a high efficiency not only in the sensing application, but also being distinguishable with the nonlinear optical application.
Journal Port Science Research, 2019
Identify level of The Future anxiety, in the fees of students displaced by measuring the level of... more Identify level of The Future anxiety, in the fees of students displaced by measuring the level of anxiety, on a gauge Abraham Maslow. Analysis of the fees of the IDP students on the fee analysis form. The sample consisted of (32) students from the preparatory stage, the researchers used the psychological security measure consisting of (47) paragraph, and the tool to analyze the fees of students and the (7) Of the technical characteristics, have been achieved honesty and consistency, and reached the results, including. The low level of feeling of psychological security among the students was evident in their drawings because of the influence of the conditions experienced by the student during the period of terrorism. In the light of the results, recommendations and suggestions were reached
Clinical ophthalmology (Auckland, N.Z.), 2017
Dry eye disorder is a multifactorial disease of the tears and ocular surface that results in disc... more Dry eye disorder is a multifactorial disease of the tears and ocular surface that results in discomfort and visual disturbance. Corneal pachymetry becomes increasingly important in refractive surgery, for the accurate assessment of intraocular pressure, and in the preoperative assessment of other ocular surgeries. To assess the effect of dry eye disorder on the central corneal thickness (CCT) by comparing with CCT of normal eyes of age-matched individuals. The total number of eyes examined was 280 (140 dry eyes from 70 patients and 140 normal eyes from 70 individuals). Pentacam (Scheimpflug imaging system) was used for measuring the CCT of all eyes. Patients with dry eye syndrome had significantly lower CCT compared to the control group (P<0.01). Its mean was 536.5 versus 561.3, respectively. CCT of dry eyes was significantly reduced when compared with age- and gender-matched population. This result can be attributed to chronic desiccation by the inflammatory mediators in dry eye...