87 research outputs found

    Modal Coupling Coefficients and Frequency/Bias Planes for Gyromagnetic Boundary Value Problems

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    In this paper, electromagnetic and uniform precession magnetostatic mode interaction theory is reformulated to include comprehensive electromagnetic modal impact in the determination of modal coupling calculations. For this purpose orthogonal electromagnetic and normal magnetostatic modes character is solved with coupled field Maxwell’s equations and vectorized magnetization expression to model the interactions between electromagnetic modes and magnetostatic uniform precession mode. Calculations for modal coupling factors are presented here for the first time and frequency/ bias planes are constructed using the developed modal interaction formulation with an ameliorated accuracy. The proposed formulation is validated and tested against closed form frequency/ bias solutions concerning these gyromagnetic boundary value problems.DOI:http://dx.doi.org/10.11591/ijece.v2i5.22

    Academic Service-Learning In An Accounting Information Systems Capstone Course

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    This paper presents the use of nonprofit organizations in an Accounting Information System (AIS) capstone course to promote Academic Service Learning (ASL).  ASL integrates community service with course requirements, objectives, and outcomes.  Use of a carefully planned field project is an ideal approach to realize these dual objectives of providing meaningful community service with academic learning.  Conclusions drawn from the use of ASL in the capstone course over the last two years are presented

    Pathological Spectrum of Solitary Fibrous Tumours: A Study of 25 Cases Diagnosed at a Tertiary Care Institute

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    ABSTRACT Objective:  To evaluate the clinicopathological and immunohistochemical features of Solitary Fibrous Tumor (SFT) in our hospital. Materials and Methods: This is a retrospective descriptive study. All cases of solitary fibrous tumor diagnosed on morphology from January 2012 till June 2018 were retrospectively retrieved from the histopathology department of a tertiary care hospital. The hematoxylin and eosin (H&E) stained slides as well as IHC slides were reviewed. Diagnosis was established on current standard histopathological and IHC criteria provided by World Health Organization (WHO) Classification of soft tissue tumors.8 Four micron thick sections from paraffin blocks were made of each sample and mounted onto glass slides. IHC staining for anti-STAT6 antibody (BioSB antibody, Roche kit) was available in our hospital from 2018 onwards. It was performed on all suspected cases of SFT using manufacturer’s instructions. The quality of expression was graded and interpreted as absent staining, weak expression or strong expression. The samples were graded based on diffuse (>50%) versus localized (<50% of tumor cells) staining, as well as localization of the stain within the cell (nuclear only, cytoplasmic only or both nuclear and cytoplasmic). Approval for acquisition of the tissue specimens and supporting case information and retrieval of glass slides was obtained by Institutional Review Board & Ethics Committee. Results: There were 25 cases of SFT in our study involving 12 males and 13 females. According to WHO 2013 criteria, eleven cases in our study were classified as malignant (44%) while 14 cases were in the benign group (56%). STAT6 was available in our hospital in 2018 and since then all the subsequent cases of SFT in the present study (seven in number) came positive for STAT6 (sensitivity 100%) while CD34 which was done throughout the duration of this study (January 2012-June 2018) was positive in 20 cases (86.9%) and negative in three cases (13%). Follow-up of 16 cases is available. Out of a total 14 benign cases, follow-up of only seven (50%) cases could be traced and from a total of 11 malignant cases, follow-up of nine (81%) cases could be sought. All benign cases remained disease free while among the nine malignant cases: three (33.3%) patients died, recurrence was reported in four (44.4%) patients. One (11.1%) patient remained disease free while one (11.1%) patient is alive and on treatment. Conclusion Malignancy in SFT is common and must be evaluated meticulously. STAT6 is a highly sensitive marker for the diagnosis of SFTs.  Immunohistochemical panel including STAT6, CD34, CD99 and bcl-2 support morphology. Malignant behavior is common and is evaluated by meticulous analysis of gross/microscopic features and close follow-up of the patient. However further advances in the genetics and new tumor markers is in progress and must be followed for definitive decision of tumor behavior and its subsequent treatment. Keywords: solitary fibrous tumor, STAT6, CD3

    Earthquake relief experience of Aga Khan University trauma team

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    The volatile geo-political situation of the country after the events of September 11, compelled the department of Surgery at Aga Khan University (AKU) to initiate the formation of a comprehensive disaster plan and trauma team. Since its inception the trauma team has stood the test of time during multiple disaster situations in Karachi. This includes the bus bombing of the French engineers, Hyderi mosque bomb blast and various other bomb blasts inside the city of Karachi. All these disasters were successfully managed within the premises of AKU. This earthquake relief activity was the first of its kind when the AKU trauma team ventured out and performed brilliantly, yet again, in a totally foreign environment

    Incidance of Hepatitis B and C in Lady Health Vistor Students at Public Health Nursing School

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    Objective: To investigate prevalence of hepatitis B and C in lady health visitor students at Public health Nursing School Sahiwal.Material and methods: This study was done at Public Health Nursing School, Sahiwal, and Multan in May 2017. There are two classes of Lady Health Visitor (LHV) in the school, 50 students in each class. Total number of students is 100. Authorization for the study protocol was obtained from the Ethics Committee of Public Health Nursing School, Sahiwal, and informed consent was taken from the patients.  The students are admitted on FSc basis, from Sahiwal, Khanewal and Toba Tek Singh Districts, according to the seats allocated by Govt. to these districts on merit. All the students were included in study. Age of the students ranges between 18 to 24 years. They belonged to both urban and rural areas. Screening of students was done for HCV and HBV. They were educated regarding the mode of spread of HCV and HBV. They were advised to take preventive measures for their safety as well as the safety of patients while attending patients. Those who were not vaccinated for HBV were vaccinated. That whose test was Positive, there PCR was done and treatment started from the DHQ Teaching Hospital Sahiwal. Statistical analysis was performed of the data received through questionnaire form about age and other demographic information, and screening test which was done to identify the positive HCV and HBV cases. Computer software SPSS version 23 was used to statistically analyze the data. Results: All the students of the institution were included in the study. Among 100 students 11 were positive for HCV (11%) and 1 was positive for HBV (1%). Among these 12 cases only 1 was living in urban area and 11 were living in rural areas.Conclusion: Incidence of Hepatitis C is higher in Pakistan and is increasing due to lack of preventive measures. Hepatitis B and C have multiple transmission modes, there is special need to educate people in General and Health Care Professionals in particular to screen each and every patient and take necessary precautions to stop virus transmission. Special attention should be given to educate people in rural areas, including health care professionals, paramedic, quacks, beauticians and barbers. Keywords: Hepatitis B, Hepatitis C, Health care workers, Lady Health visitors

    INTRADEPARTMENTAL CONSULTATION CONFERENCE - A GOOD QUALITY CONTROL PRACTICE AND A PROBLEM-SOLVING ACTIVITY

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    Objective: The objective of this study was to evaluate the effectiveness of intradepartmental consultation conference (IDC) as a good quality control measure and problem-solving activity in a busy histopathology department.Methods: This study was done at the histopathology department of a tertiary care hospital over a period of 6 years from 2011 to 2016. IDC is routinely held at 2 pm daily on multi-header microscope. All the difficult and problematic cases are discussed. Discussed cases with the recommendations of IDC are recorded. The cases were extracted from the record of IDC being maintained since 2011. All the record sheets were analysed and the cases were divided organ and system wise.Results: A total of 5766 (6.5%) cases were discussed in this 6-year period of a total of 89,253 cases reported at our centre. Of these, 2198 (38%) were solved on first viewing, 1783 (31%) in the second viewing and 1691 (29%) in thethird viewing. In total, 98% of the cases were resolved until the third viewing, leaving only 94 (2%) cases in which further studies were recommended. A variable number of pathologists were present in the meeting, and an average of4 was present in majority of the occasions.Conclusion: IDC is a good quality control measure to ensure quality in a busy histopathology department and an effective problem-solving activity.Key words: Intradepartmental consultation, histopathology, cance

    Depression and anxiety in glaucoma patients using mono drug therapy vs polydrug therapy

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    Objective: To evaluate the frequency of depression, anxiety, and stress scores among glaucoma patients and assess factors attributing to severe scores. Methodology: This Analytical, Cross-sectional study was conducted at the Armed Forces Institute of Ophthalmology from June 2020 to July 2021. Data was collected through nonprobability consecutive sampling. Individuals with diagnosed primary open-angle glaucoma were selected irrespective of age and gender. Dass-21 (self-assessment scale) was used in Urdu to document patient scores for anxiety, depression, and stress. Results: The frequency of males (n=204, 54%) and females (n=173, 45.8%) in the two groups was almost the same (p=0.164). The mean age in the mono-drug group (mean= 48.81±10.58 years) was slightly lower than the polydrug group (mean=53.67±11.16years) (p=0.000018). Overall depression score of the sample fell in the severe category (score=21-27), with individuals showing more depression scores in the poly group (n=99, 26%) than in the mono drug group (n=76, 20%) (p=0.000002). Individuals on polydrug therapy showed severe scores for depression, anxiety, and stress. Conclusion: Among the glaucoma patient, those on polydrug therapy have higher incidences of anxiety among young patients and depression among older patients. This not only causes poor compliance to treatment but also increases the risk of progression of glaucoma hence augmenting the crippling effects of the disease. Keywords: Depression, anxiety, DASS-21, Glaucom

    MOBICAT: a model-driven engineering approach for automatic GUI code generation for Android applications

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    IntroductionMobile applications have become indispensable in our daily lives. However, mobile application development faces several challenges, including limited resources, budget, and time to market. The current state of the practice intends to develop the Graphical User Interface (GUI), business logic, and the controller class separately, which is a time-consuming and error-prone process. The generation of GUI is a significant concern in the development of mobile applications.MethodsThis work presents a model-driven engineering approach for automatic GUI code generation for Android applications, which intends to address the above-mentioned challenges in mobile app development. The proposed approach involves modeling domain-specific features of mobile applications and capturing requirements using UML diagrams that lead to automated GUI generation and controller class creation. We develop a Model-Based GUI Code Generator (MOBICAT) tool to provide automation support to the proposed approach.ResultsThe efficacy of the MOBICAT tool is evaluated by comparing it with the baseline techniques using three open-source applications. The results indicate that the MOBICAT tool significantly outperforms the baseline techniques by attaining improved execution progress, effectively reducing development cost and effort.DiscussionThe MOBICAT tool, offers a promising solution to challenges in mobile app development. By automating GUI generation and controller class creation, it streamlines development processes and enhances productivity
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