Gesture Recognition based on Hidden Markov Models from Joints' Coordinates of a Depth Camera for Kids age of 3-8

Gesture recognition is a hard task due to the presence of noise resulted from the unpredictability and ambiguity of the body motions. The joints' locations vary on all the axes which could add extra noise to the task of gesture recognition. Extra noise is added to the task as the target group of the research are small kids. On the other hand multiple gestures and similar features of some of them make the recognition task even harder, therefore multiple recognitions for different joints is needed to be done in parallel. Hidden Markov Models based techniques and the concept of threshold model are used to recognize the gesture motions from non-gesture motions. Firstly series of gestures are recorded and used to create the models. K-Means algorithm is used to cluster the points into the N states and labels the 3D points. Then the available alphabet of output symbols is expanded to M (M > N) states as it is not sure if the sequence of the points are a gesture or not. Next, by looking at the sequence of the labeled data it is possible to estimate how likely it is that the points have passed through the sequence the N states. Finally, if the likelihood is above the threshold a gesture is recognized

TWO-EPOCH OPTIMAL DESIGN OF DISPLACEMENT MONITORING NETWORKS

In the traditional method of optimal design of displacement monitoring networks a higher precision, √2 times better than the desired accuracy of displacements, is considered for the net points in such a way that the accuracy of the detected displacements meets the desired one. However, in this paper, we develop an alternative method by considering the total number of observations in two epochs without such a simple assumption and we call it two-epoch optimisation. This method is developed based on the Gauss-Helmert adjustment model and the variances of the observations are estimated instead of the weights to optimise the observation plan. This method can deliver the same results as the traditional one, but with less required observations in each epoch

A comparison of 2% Lidocaine and Epinephrine with 3% Mepivacaine in inferior alveolar nerve block

The purpose of this study was evaluation of anesthesia success rate of 3% mepivacaine compared with 2% lidocaine 1/80000 epinephrine in inferior alveolar nerve block in thirty voluntary students. All of the subjects were healthy and had not received any medicament. They pariticipated for two appointments and each time randomly received an inferior alveolar nerve injection with one of the anesthetic solutions. Before anesthesia the first molar, second premolar, and canine teeth were tested with electric pulp tester (EPT). After injection, when subjects felt numbness in inferior lip, the time for starting of anesthesia was recorded according to schedule time from 3 to 49 minutes after lip numbness. When teeth had no response to EPT in maximal output, the pupal anesthesia was achieved. The t paired test was used for data analysis. Results showed that although subjects felt numbness in their lips, anesthetic success was defined only 76.6% in molars, 73.3% in premolars, and 66.7% in canine teeth after injection of mepivacaine. Success was defined 66.7% & 76.7% in molars and premolars and 53.3% in canine teeth when 2% lidocaine 1/80000 epinephrine was administered. No statistically significant difference was found in onset, success or failure rate between both anesthetic solutions in lidocaine group, however, premolar and molar teeth showed significant differences with canine teeth. Keywords: Inferior alveolar nerve block, Lidocaine, Mepivacain

Factor structure and validity of Cognitive adjustment as an indicator of psychological health at work

Background and aims: Mental health has been defined as one of the basic principles of psychological health. Mental health along with mental experience of anxiety and calmness should also assess the individual’s performance at work. The main aim of the current study was to carry out factor analysis and validation of the questionnaire for cognitive adjustment at work. Methods: The research scheme utilized by the study is the methodology approach and the study is a Methodological. The statistical population of the study include all the students at Yasouj Medical University, from which 215 participants were selected using the convenient sampling method as the sample of the study. Then, the questionnaire of cognitive adjustment at work, developed by Malo, Tremblay, and Brunet, was distributed among the sample. This scale was translated into Persian and then re-translated into English. Some experts studied the questionnaire to determine the cultural sensitivities, the clarity of questions, the number of differences and errors in meaning construction. Results: The findings showed that Cronbach Alpha coefficient was 0.87 for the whole questionnaire and varied from 0.76 to 0.81 for subscales. All items had acceptable correlation. The test-retest results indicated the stability of the questionnaire of students' attitude toward police and its subscales. The exploratory factor analysis indicated 3 acceptable subscales. Conclusion: The results showed that the Persian version of the work environment cognitive adjustment questionnaire has acceptable reliability and validity. In order to measure working mental health along with the components of psychological health, it can be used the questionnaire with Iranian samples

The Obstacles of Outsourcing in Educational Hospitals: A Qualitative Study

Introduction: Outsousing is a key strategy toward improving performance and financial system of hospitals. The aim of study was to determine the obstacles of outsourcing in university hospitals in Ahvaz City, Iran. Method: This qualitative study was performed to determine the obstacles of outsourcing in university hospitals affiliated with Ahvaz Jundishapur University of Medical Sciences, in year 2016. Research population included all hospital managers, employees, and contracting experts. 23 participants were selected as samples purposefully. Data were gathered and concluded using framework analysis method; and were analyzed using content analysis method. Results: The obstacles of outsourcing were extracted and reported in format of 4 themes and 16 subthemes. Main themes were as “legal obstacles”, “financial obstacles”, “organizational/structural obstacles”, and “managerial obstacles”. Moreover, participants mentioned the benefits of outsourcing as “increasing the quality of services”, “organizational downsizing”, and “increasing the profit”. Conclusion: The results of study showed that the hospitals’ outsourcing faced serious problems in legal, financial, organizational/structural, and managerial aspects. Identification of these problems could be useful in solving them. Keywords: Hospitals, Outsourced services, Contracts, Qualitative researc

Dibromido(6,6′-dimethyl-2,2′-bipyridine-κ2 N,N′)zinc(II)

In the title compound, [ZnBr2(C12H12N2)], the ZnII atom is four-coordinated in a distorted tetra­hedral arrangement by an N,N′-bidentate 6,6′-dimethyl-2,2′-bipyridine ligand and two bromide ions. In the crystal, there are aromatic π–π contacts between the pyridine rings [centroid–centroid distances = 3.818 (3) and 3.728 (4) Å]

Dichlorido(6,6′-dimethyl-2,2′-bipyridine-κ2 N,N′)zinc(II)

In the title compound, [ZnCl2(C12H12N2)], the complete mol­ecule is generated by crystallographic mirror symmetry, with the Zn atom and both chloride ions lying on the reflecting plane, yielding a distorted ZnN2Cl2 tetra­hedral coordination for the metal ion. In the crystal, there are π–π contacts between the pyridine rings [centroid–centroid distance = 3.7857 (17) Å]

Thrombocytopenia as a Marker of Patient Outcome in Medical Intensive Care Unit

Introduction: Thrombocytopenia is a common hematologic disorder observed in many pathological conditions in critically ill patients. The current study aimed at investigating the prevalence of thrombocytopenia and its relationship with the length of stay and mortality among intensive care unit (ICU) patients.Methods: The current prospective cohort study enrolled 150 patients consecutively admitted to the medical ICU during a nine-month period. Patients’ baseline characteristics and underlying diseases were recorded. Laboratory findings and admission mean platelets and platelet counts on the 3rd day of admission were obtained. Patients were divided into thrombocytopenic (platelet count of less than 150×109/L or decrease of platelet to more than 50%) and non-thrombocytopenic groups according to the 3rd day platelet count.Results: Thrombocytopenia was detected in 53(35%) patients while 13 patients (8.6%) had severe thrombocytopenia (platelets count < 50 × 109/L). ICU stay and mortality were significantly higher in patients with thrombocytopenia compared with non-thrombocytopenic patients (16 ± 2.7 vs 12 ± 2.4 days, P = 0.01) and (45.5% vs 37.3%, P = 00.1) respectively.Conclusions: Platelet might be considered as a prognosis monitor in ICU settings. Severe thrombocytopenia could be mentioned as a poor prognostic factor for increased mortality and prolonged hospitalization period in ICU patients

Suicidal Ideation in Patients With Gender Identity Disorder in Western Iran From March 2019 to March 2020

Background: In recent years, the number of patients with gender identity disorder (GID) has rapidly increased. These people are at risk of adverse life events that influence their health and wellbeing. Research studies have also shown a significant rate of suicide in these individuals. This study aims to determine the prevalence of suicidal ideation in patients with GID referred to Legal Medicine Office in Ilam Province.Methods: In study sample comprised 21 patients without psychiatric comorbidity visited the Legal Medicine Office in Ilam Province for confirmation of transsexuals from March 2019 to March 2020. GID disorder was diagnosed through a GIDYQ (A-A) questionnaire and clinical interview. The Beck scale for suicide ideation was used to clarify and measure the intensity of attitudes, behaviors, and planning for a suicide attempt.Results: In 21 patients with GID, the average score for suicide ideation was 11.6. The average age of patients was 19 years, and all of them were single. In this sample, 19.1% had low risks, 71.5% high risks, 9.5% had very high-risk suicide ideation. Linear regression analysis showed that higher education and higher age were risk factors for suicide ideation in patients with GID.Conclusion: The high rate of suicidal ideation in patients with gender identity disorder makes it essential to pay attention to their mental health. It should be noted that suicidal thoughts can be a basis for suicide attempts