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A Product-Line Model-Driven Engineering Approach for Mobile Applications Generation and Performance Testing

Thesis Info

Access Option

External Link

Author

Usman, Muhammad

Program

PhD

Institute

National University of Computer and Emerging Sciences

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Computer Science

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10053/1/Mohammad%20Usman_CS_2019_%20FAST%20NU_PRR.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727687373

Similar


Mobile application development is emerging as one of the focused areas in the software industry due to the exponential growth of mobile users and applications. The mobile market is highly competitive and the applications developed need to work under strict performance constraints to meet the expectations of end users. A significant challenge faced by the industry is developing multiple native variants of mobile applications to support different mobile operating systems, varying mobile devices, and varying application functional requirements. The mobile devices typically have limited memory, battery power, and processing speed, which makes performance testing of these applications very important. The current industrial practice is manual development and testing of several native variants for a mobile application. Any potential change has to be applied and tested across variants manually, which is neither efficient nor scalable. In this thesis, the problem of developing various native variants of a mobile application is considered as a ‘software product-line engineering’ problem. The thesis proposes a novel product-line model-driven engineering approach for mobile applications that addresses the key challenges of generating of feature-based native mobile application variants for multiple platforms. Specifically, the approach deals with three types of variations in mobile applications: variation due to operating systems and their versions, software, and hardware capabilities of mobile devices, and functionalities offered by the mobile applications. The models developed are used to generate mobile variants automatically. Due to the variation in mobile devices, the overall performance of generated variants may significantly vary across platforms. Once the native variants are generated, performance testing of mobile applications across various platforms is also of key importance to ensure that the variants are performing within acceptable limits. For this purpose, an automated model-based performance testing approach is proposed that specifically focuses on the evaluation of mobile device processing, memory, and battery consumption for native application variants. The proposed approach is supported by an automated MOPPET tool and is applied to two industrial case studies. The tool is used to generate the application variants and test their performance. The results of applying the approach to case studies show that the proposed approach is applicable to industrial mobile applications and have the potential to significantly reduce the development and testing efforts. A questionnaire-based survey is conducted to evaluate the usefulness of the proposed approach. The analysis of the survey summarizes that the presented approach addresses the challenges of generating and performance testing of mobile application variants.
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محبوب دی یاد

محبوب دی یاد
ساری رات میں رکھیاں تاہنگاں
دھمی ککڑاں دتیاں بانگاں
ملاں اُٹھ مسیت نوں جاوے
اللہ دا سد پیا سناوے
نیکاں دے ایہہ من نوں بھاوے
بُریاں وجن پیّاں سانگاں
ساری رات میں رکھیاں تاہنگاں
ساری دنیا سکھ نال سوندی
مینوں ستیاں نیند نہ اوندی
یاد سجن دی پئی تڑپوندی
کندھ عشق دی کیویں لانگاں
ساری رات میں رکھیاں تاہنگاں
دسو ہا کوئی عشق دا دارو
دکھاں دا کوئی بن جائو بھارو
جنگل ڈھونڈیا تے تھل مارو
دل وچ وجدیاں نیں اَج کانگاں
ساری رات میں رکھیاں تاہنگاں

واٹ ’’روم‘‘(۱) دی سئے کوہاں دی
میری کوئی پیش نہ جاندی
خبر ملے جے ول وطناں دی
جاواں گی فیر مار چھلانگاں
ساری رات میں رکھیاں تاہنگاں
جہلم شہر دی سوہنیاں جائیں
جتھے رہندا دلبر سائیں
مولا سانوں جلد ملائیں
ایہو نت دعائیں مانگاں
ساری رات میں رکھیاں تاہنگاں
قادریؔ سائیں سنجے ویہڑے
رانجھن باہجھوں دسدے کھیڑے
یار ملے مک جاون جھیڑے
نالے مکن ہکلاں چانگاں
ساری رات میں رکھیاں تاہنگاں
(۱)۔ مرشد پاک کا قیام کچھ عرصہ اٹلی(روم) میں بھی رہا ہے۔

EFFECTS OF RELAXING MUSIC THERAPY ALONG WITH TASK-ORIENTED TRAINING OF LOWER LIMB ON BALANCE AND FUNCTIONAL INDEPENDENCE IN PATIENTS WITH CHRONIC STROKE: A RANDOMIZED CLINICAL TRIAL

Background of the Study: To compare the effects of relaxing music therapy with task-oriented training of lower limbs on the balance and functional status in patients with chronic stroke. Methodology: This randomized clinical trial was conducted in three outpatient physiotherapy clinics in Lahore, Pakistan. A sample of 76 participants with chronic stroke, aged 40-60 years, and on assistance walking, were recruited through a purposive sampling technique. Individuals who had physical impairments and visual or hearing deficits were not included in the study. Group A received task-oriented training with routine physical therapy while Group B received Music therapy additionally. Three sessions on alternate days per week for eight weeks were given. Balance and functional independence were the outcome variables measured using the Berg Balance Scale and Functional Independence Measure respectively. Mann-Whitney U test and Friedman ANOVA were applied for between-group and within-group differences respectively. P-value was significant at ≤0.05. Results: The mean age of participants was 54.05 ± 3.64 years, the majority i.e., 55 (72.4%) were male, 46 (60.5%) had ischemic stroke and 53 (69.7%) were presented with left-sided weakness. A statistically significant difference was observed among both groups in balance (p =.000) and functional independence (p=0.000). The within-group difference was also significant for balance (p=0.000) and functional independence (p=0.000). Conclusion: The integration of relaxing music therapy, task-oriented training, and routine physiotherapy is effective in improving balance and functional independence in chronic stroke patients.

Factors Associated With Cardiac Dysfunction Following Anthracyline-Based Chemotherapy in Adults in a Tertiary Hospital in Nairobi

Introduction: Anthracyclines are known to improve survival in some malignancies, but may also be associated with irreversible cardiotoxicity, which is partly dose dependent. Early detection of cardiotoxicity provides an opportunity for treatment adjustment. Several parameters predict development of clinically manifest cardiac dysfunction. The study aimed to evaluate clinical and echocardiographic parameters which predict development of cardiac dysfunction in a sub-Saharan African population. Methods: Patients with a diagnosis of cancer and receiving anthracyclines at AKUH,N were evaluated if they met eligibility criteria (≥18years at first anthracycline administration, archived baseline echocardiogram, no prior history of heart disease or use of anthracyclines). Patients underwent echocardiographic, baseline clinical , drug therapy, radio-therapy and cardiovascular risk factor assessments. Echocardiographic global longitudinal strain (GLS), left ventricular (LV) ejection fraction and LV volumes were assessed. A relative decline from baseline in GLS of >15%, an absolute decline in LVEF >10 percentage points to <53%, or symptomatic absolute decline in LVEF of 6-10 percentage points to <53% defined LV dysfunction (cases). Factors associated with development ofLV dysfunction were compared between cases and controls (no LV dysfunction). Results: From 14-Oct-2013 to 11-Apr-2019, 504 patients who received anthracyclines were screened. 141 fullfilled inclusion criteria and were analysed (mean age, 47.7 years ± 11.2, Africans 95%, females 85.1%). Breast cancer patients were 82%, lymphoma 12%, sarcoma 5%, and leukaemia 1%. 39 (27.7%) had cardiac dysfunction, 30 of whom fulfilled the GLS criterion. Mean time interval between echocardiograms was 14.3 months (cases 16.4 ± 16.9; controls 14.4 ± 13.2), mean anthracycline dose was 244.7mg/m2 ± 72.2 (cases 254.5 ± 78.7; controls 241 ± 69.6), and mean symptom scores (DASI) were 50.0 ± 13.3 (cases 48.5 ± 13.4; controls 50.5 ± 13.2). Mean cardiotoxic doxorubicin equivalence dose was 236.7 mg/m2 ± 57.4 for cases and 217.3 ± 61.9 for controls [p = 0.033, OR = 1.00 (95% CI: 0.99 - 1.01)]. Cycle intervals, body surface area, body mass index, blood pressure, age, concomitant medication, radiation use and cardiovascular factors were similar. Echocardiographic parameters – E/a ratio and e’ were significantly reduced in cases (E/a 1.02 ± 0.33 for cases vs 1.16 ± 0.36 for controls, p =0.02: e’ 0.10 ± 0.05 for cases vs 0.11 ± 0.05 for controls, p =0.011). Conclusion: This is the first study evaluating early cardiotoxicity in an adult Sub-Saharan population receiving standard dose anthracyclines. The incidence of early cardiotoxicity was 27.7%, which was higher than in previously studied