Software For Mobile Devices Research Articles

SMART Markers: collecting patient-generated health data as a standardized property of health information technology

A patient-centered health system needs precise computable measurements to derive value. While validated patient-reported outcomes (PROs) are increasingly used in trials, their adoption in care remains limited and generally separated from the medical record. Further, absence of systematic processes for patient-led data submission excludes valuable data from digital devices that can potentially aid in contextualizing health status. With prior experience in developing apps for the Patient-Reported Outcomes Measurement Information System (PROMIS), we sought to make collecting patient-generated health data (PGHD) a fundamental property of health information technology at scale, and in an interoperable, standards-compliant fashion. We build upon the open SMART on FHIR (Fast Health Interoperability Resources) specification to create SMART Markers—a mobile device software framework encapsulating functionality needed for rapid deployment of both patient- and practitioner-facing PGHD apps. We refactored previously developed PROMIS apps to use SMART Markers for handling PGHD-request creation, on-device administration, and generation of a variety of PGHD types and submission of results to a FHIR server. Validation and conformance tests were performed on the generated output and app-reusability was demonstrated across two demo servers. App developers can import SMART Markers into their existing or new apps to readily leverage an interoperable PGHD capturing functionality out of the box, without having to reinvent the wheel. Our approach enables the creation of health system integrated, context-specific experiences for both patients and practitioners.

A software to prevent delirium in hospitalised older adults: development and feasibility assessment.

non-pharmacological interventions to prevent delirium are useful in hospitalised older adults. However, they are poorly implemented in clinical practice. We aimed to develop a software for bedside use by hospitalised older adults and to improve their access to these interventions. a transdisciplinary team composed of healthcare professionals, designers, engineers and older adults participated in the development of the software. Scrum methodology was used to coordinate the work of the team, and the software was evaluated in a feasibility study. a software for touchscreen mobile devices that supports Android 5.0 or later was produced, including modules for time-spatial re-orientation, cognitive stimulation, early mobilisation, sensorial support use promotion, sleep hygiene and pain management optimisation. Horizontal disposition, use of colour contrast and large interaction areas were used to improve accessibility. The software's usability and accessibility were evaluated in 34 older adults (average age 73.2 ± 9.1years) showing that 91.1% of them got access to all the software functions without previous instructions. The clinical feasibility assessment showed that 83.3% of the 30 enrolled hospitalised patients (76 ± 8years) completed the 5-day protocol of software usage during hospitalisation. Software use was associated with a decreased trend in delirium incidence of 5 of 32 (15.6%) at baseline to 2 of 30 (6.6%) after its implementation. a highly accessible and implementable software, designed to improve access to non-pharmacological interventions to prevent delirium in hospitalised older adults, was developed. The effectiveness of the software will be evaluated in a randomised clinical trial.

Design and implementation of keycode encryption for electric door lock embedded system using cryptography algorithm

In this digital era the usage of locks is no longer only relies on traditional key systems, but also relies on usage of electronic sensors that can improve security system. Now the threat to keyless locking system does not only come from physical sources but also come from non-physical or digital sources. This treat can be prevented by using cryptography to hide digital data in the system. In this research utilizing a raspberry pi and a servo motor as a locking device, a web server as a data storage center, a mobile device software application as a user interface. Raspberry pi is a mini computer that can be used for various needs. The password will be sent over internet from mobile device to web server and raspberry pi will give a command to the servo to unlock and lock. This study will compare between combination of RSA, 3DES, AES 128 bit, and 256bit AES algorithms to obtain an algorithm that could be operated optimally on the system based on encryption and decryption speed. The final result of this study is a method to implement cryptographic algorithms on smart key systems to obtain better security.

Getting started with screen recording

Overview
 Ever watched a YouTube video to solve a software problem? For example, ‘How do I set up Presenter View in PowerPoint? Well, you are watching a screen recording, also known as screencasting and video screen capture. This is a video recording with audio narration; not to be confused with screenshot/capture, which is a still photo. For educators, screen recording is ideal for: recording your presentations in a controlled environment, recording feedback on student work with real teacher presence, explaining course and LMS navigation, explaining and annotating images such as digital microscopy, radiology, graphics, as well as recording a digital whiteboard for hand drawn mathematics equations or diagrams.
 
 Outcomes
 At the end of this 90 min mini workshop you will have created and shared your first screen recorded video, and will be able to do it again.
 
 Major features to be investigated
 Structured into 6 steps, discussion and demonstration of pros and cons of
 
 Hardware – laptop/desktop vs mobile device
 Software – free vs paid
 Microphone – inbuilt vs USB
 Recording technique – record/pause segments
 Upload -video hosting
 Share - links
 
 
 Session organisation
 
 
 
 
 5 tables. 4 participants per table. Maximum 20 participants.
 Mac users grouped together, and Windows users grouped together
 
 
 
 
 Time (mins)
 
 
 Activity
 
 
 Content
 
 
 
 
 10
 
 
 Icebreaker
 
 
 Table group introductions, share experience with screen recording and intended uses, table group discussion and whole group Post-it notes .
 
 
 
 
 10
 
 
 Demonstration
 
 
 Introduction and use cases.
 Downloading software.
 
 
 
 
 15
 
 
 Pair programming
 
 
 Participants access free software.
 Windows users: Screencast-o-matic or Zoom
 Mac users: QuickTime
 
 
 
 
 10
 
 
 Demonstration and printed set up sheet
 
 
 Settings for video, webcam, audio. Recording tips and techniques.
 
 
 
 
 15
 
 
 Individuals or pairs
 
 
 
 Set up software, and microphone. Open one of your previous PowerPoint presentations or other resource, make a 2 sec recording of desktop screen.
 
 
 
 
 5
 
 
 
 
 
 Break
 
 
 
 
 10
 
 
 Demonstration
 
 
 Save, upload, share
 
 
 
 
 15
 
 
 
 Pairs
 
 
 Participants create a 1 min video, save and upload, share link by email with partner. Self critique and partner feedback using a structured framework.
 
 
 
 
 5
 
 
 Discussion
 
 
 Revisit how you might use screen recording in your teaching. Table group discussion and Post-it notes.
 
 
 
 
 5
 
 
 Evaluation Survey
 
 
 QR code to online survey on phone
 Resource links.
 
 
 
 
 
 Resources for distribution
 We will be using free software, either inbuilt or accessed online. One page printed step by step guide.
 
 Expectations and requirements of participants
 You need to bring your own laptop to participate, or pair with someone who has. Although screen recording is possible on a tablet or phone, you will have to install different Apps.

Image registration method for mobile-device-based multispectral optical diagnostics for buildings.

The recent advances in mobile device hardware and software introduced new opportunities to perform more advanced computation and measurements for buildings. Multispectral optical imaging is a widely recognized technique for building diagnostics, as it is non-destructive, quick, and provides rich spatial-spectral information about the different surfaces for decisions related to building energy performance. However, such implementations require an accurate image fusion. The purpose of this study is to introduce a practical and robust image registration method for mobile-device-based multispectral imaging analysis for building diagnostics. Considering the complicated building geometries including walls, floors, ceilings, roofs, windows, and doors, a new approach based on planar homography is chosen for determining the feature points that are required to perform image fusion between different images. The results obtained are compared against the other available methods, which show that the current method provides multispectral images enhanced with accurate qualitative information, as long as the constraints are satisfied. The results are compared with the state-of-the-art methods. The possible impact of the multispectral imaging to the future of building diagnostics is also discussed.

Airfild evacuation center: experience of the interaction between the medical service of the Armed Forces of the Russian Federation, the Disaster Medicine Service and the Ambulance Service

Relevance. One of the important tasks in the provision of emergency medical care to victims of the mass-causalty incident is a medical triage in order to determine the priority of medical care and the priority of medical evacuation.Intention. To work out issues of interaction between the medical service of the Armed Forces of Russia, the Disaster Medicine Service and the Ambulance Service.Methodology. The program of the 16th All-Russian Congress “Ambulance 2017”, tactical and special exercises on the deployment of airfield evacuation center were included as a training and demonstration event . According to the plan of the exercise, several mass-causalty areas resulted from terrorist attacks along the border of the Leningrad Region.Results and discussion. To accomplish the tasks, an evacuation center was deployed with a capacity of up to 200 wounded and sick per day, evacuation capability of 32 stretcher wounded, and 4 h deployment time. During the exercise, non-invasive screening studies to proactively diagnose intracranial hematomas (portable infrared scanner), tension pneumothorax, hemopericardium, intrapleural and intra-abdominal bleeding (portable US device using FAST protocol), acute blood loss (portable laboratory analyzer) were performed in addition to standard examinations. To determine the priority of medical evacuation of victims, an improved Revised Trauma Score (RTS) scale with user-friendly software for Android mobile devices (smartphone, tablet) was used. In case of mass-causalty event and a shortage of specialized sanitary transport, those who needed urgent specialized medical care were transferred from an evacuation center via radial evacuation to specialized medical organizations subordinated to the Ministry of Defense, the Ministry of Health and the subjects of Russia.Conclusion. The feasibility of deploying an airfield evacuation center to eliminate the health effects of emergencies was determined by potential discrepancy between evacuation capacities of air transport and ambulances, on one hand, and the need to temporarily accommodate (including isolation) and provide emergency health care to victims.

The Association between Cannabis Product Characteristics and Symptom Relief

Federal barriers and logistical challenges have hindered measurement of the real time effects from the types of cannabis products used medically by millions of patients in vivo. Between 06/06/2016 and 03/05/2018, 3,341 people completed 19,910 self- administrated cannabis sessions using the mobile device software, ReleafApp to record: type of cannabis product (dried whole natural Cannabis flower, concentrate, edible, tincture, topical), combustion method (joint, pipe, vaporization), Cannabis subspecies (C. indica and C. sativa), and major cannabinoid contents (tetrahydrocannabinol, THC; and cannabidiol, CBD), along with real-time ratings of health symptom severity levels, prior-to and immediately following administration, and reported side effects. A fixed effects panel regression approach was used to model the within-user effects of different product characteristics. Patients showed an average symptom improvement of 3.5 (SD = 2.6) on an 11-point scale across the 27 measured symptom categories. Dried flower was the most commonly used product and generally associated with greater symptom relief than other types of products. Across product characteristics, only higher THC levels were independently associated with greater symptom relief and prevalence of positive and negative side effects. In contrast, CBD potency levels were generally not associated with significant symptom changes or experienced side effects.

Location-Based Test Case Prioritization for Software Embedded in Mobile Devices Using the Law of Gravitation

Considering that some intelligent software in mobile devices is related to location of sensors and devices, regression testing for it faces a major challenge. Test case prioritization (TCP), as a kind of regression test optimization technique, is beneficial to improve test efficiency. However, traditional TCP techniques may have limitations on testing intelligent software embedded in mobile devices because they do not take into account characteristics of mobile devices. This paper uses a smart mall as a scenario to design a novel location-based TCP technique for software embedded in mobile devices using the law of gravitation. First, test gravitation is proposed by applying the idea of universal gravitation. Second, a specific calculation model of test gravitation is designed for a smart mall scenario. Third, how to create a faulted test case set is designed by the pseudocode. Fourth, a location-based TCP using the law of gravitation algorithm is proposed, which utilizes test case information, fault information, and location information to prioritize test cases. Finally, an empirical evaluation is presented by using one industrial project. The observation, underlying the experimental results, is that our proposed TCP approach performs better than traditional TCP techniques. In addition, besides location information, the level of devices is also an important factor which affects the prioritization efficiency.

Antecedents of continued use intention of e-hailing apps from the passengers' perspective

E-Hailing Apps (EHA) – mobile device software to order any form of transportation pick up – have become very popular in society due to the swift proliferation of smartphones worldwide. Thus, the scope of this article is to ascertain the antecedents of continued use intention of EHA from the passengers' standpoint. To achieve this, a meta-model was developed via a theoretical background based on theories of information system adoption, diffusion of innovation, trust in virtual environments and user satisfaction, as well as research hypotheses. By applying structural equation modelling in data collected via a web survey, the theoretical meta-model and research hypotheses were tested. It was established that perceived utility, compatibility, relative advantage and trust are antecedents of user satisfaction with EHA, this factor being an antecedent of the continued use intention of same. Lastly, it was found that subjective norms have a direct and statistically significant impact on the continued use intention of EHA.

HCRCaaS: A Handwritten Character Recognition Container as a Service Based on QoS Guarantee Algorithm

Handwritten character recognition (HCR) is a mainstream mobile device input method that has attracted significant research interest. Although previous studies have delivered reasonable recognition accuracy, it remains difficult to directly embed the advanced HCR service into mobile device software and obtain excellent but fast results. Cloud computing is a relatively new online computational resource provider which can satisfy the elastic resource requirements of the advanced HCR service with high-recognition accuracy. However, owing to the delay sensitivity of the character recognition service, the performance loss in the traditional cloud virtualization technology (e.g., kernel-based virtual machine (KVM)) may impair the performance. In addition, the improper computational resource scheduling in cloud computing impairs not only the performance but also the resource utilization. Thus, the HCR online service is required to guarantee the performance and improve the resource utilization of the HCR service in cloud computing. To address these problems, in this paper, we propose an HCR container as a service (HCRCaaS) in cloud computing. We address several key contributions: (1) designing an HCR engine on the basis of deep convolution neutral networks as a demo for an advanced HCR engine with better recognition accuracy, (2) providing an isolated lightweight runtime environment for high performance and easy expansion, and (3) designing a greedy resource scheduling algorithm based on the performance evaluation to optimize the resource utilization under a quality of service (QoS) guaranteeing. Experimental results show that our system not only reduces the performance loss compared with traditional cloud computing under the advanced HCR algorithm but also improves the resource utilization appropriately under the QoS guaranteeing. This study also provides a valuable reference for other related studies.

Application of tablet for data collection in HIV sentinel surveillance in Vietnam

ObjectiveTo describe the implementation process, successes, challenges, and lessons learned of the application of tablet for data collection and data system in HIV sentinel surveillance in VietnamIntroductionVietnam has routinely monitored HIV sero-prevalence among key populations through its HIV sentinel surveillance system (HSS). In 2010, this system was updated to include a behavioral component (HSS+) among people who inject drugs, female sex workers, and men who have sex with men. HSS+ has historically used a paper-based questionnaire for data collection(1). At the end of the survey, provincial data were manually entered into computers using EpiData Entry forms (http://www.epidata.dk/) and submitted to the Vietnam Authority of HIV/AIDS Control (VAAC). As a result, feedback to provinces on data issues was not provided until after fieldwork completion. One recent survey used tablets for data collection and found that it saved time, required fewer staff, and reduced costs compared to paper-based data collection(2). In 2017, Vietnam introduced tablet for behavioral data collection in HSS+ to improve data quality, resource saving, and to provide more timely access to data.MethodsDevelopment of data entry forms and data systemSurvey data entry forms were designed using free Epi Info™ software for mobile devices(3) and installed on tablets. A SQL database was established via SFPT data transfer to the current database in VAAC’s server. Field data were instantly synced to the national database when the internet signal was available (Picture 1). Real-time data analysis was granted to surveillance staff at all levels using authorized access to the database via Epi Info™ Cloud Data Analytics (ECDA), dashboards were used to track progress and data quality (Figure 1). HSS+ data were frequently reviewed by the National Surveillance Technical Working Group (NSTWG) and timely feedback was provided.DeploymentManuals and e-leaning materials were developed. The NSTWG conducted a pilot to test the forms and data flow from field to the national database before installed into all tablets. Four to seven tablets were distributed to each province depending on number of HSS+ sites and populations. Surveillance staff at Provincial AIDS Centers (PACs) were trained by the NSTWG on how to use the tablet to interview, check, update, save data, and sync data to cloud and to the national database, and to backup the provincial dataset. They then provided trainings to their local field staff.The NSTWG provided technical assistance and troubleshooting through field visits and online support to help local staff address issues regarding tablet use in addition to other HSS/HSS+ issues.ResultsCurrently, 18 HSS+ provinces have implemented the 2017 HSS+. Of these, nine provinces applied tablets exclusively. Two provinces used tablets, but also used paper-based questionnaires when not enough tablets were available. Seven Global Fund supported provinces used the paper-based questionnaires and entered data into tablets after interview completion due to copies of completed paper-based questionnaires are required by these provincial project management units (PMU) for fund re-imbursement.Additional updates were required after the first few days, which created issues around updating forms once revised forms were sent out by NSTWG. Another challenge was that local staff were not familiar with using tablets at the beginning. Also frequent complaints were mainly on data entry and synchronization regarding participant identity code or a record could not be synced.The NSTWG and PAC staff were able to monitor the HSS+ progress and provided feedback daily. Most commonly, feedbacks were provided on participant codings and site names. Using the tablet did not require staff, time or money for data entry and eliminated data entry errors. In general, staff prefered to use this data collection mode.ConclusionsThis mobile device application for data collection in routine HSS+ in Vietnam is feasible and accepted. However, harmonization and coordination from the central Global Fund PMU and provincial PMU will be required to successfully roll-out this system in all HSS+ provinces. This application in addition to ECDA help to improve data quality, due to timeliness of the data, is cost saving and reduces workload. Most importantly, better quality and timely data will facilitate preparation for timely local planning and response.

World language processes and strategy of foreign language education in Ukraine

The actuality of the research topic is that for the development of Ukraine it is necessary to take into account the indisputable fact that globalization together with the information revolution has created new conditions for all types of life. Humanity continues to grow quantitatively and increase the number of independent states whose citizens use the national languages. The purpose of the study is a critical analysis of the reasons for the unprecedented complexity of language changes in Ukraine after the collapse of the Soviet Union and the restoration of its independence. Objectives of the study - to identify the deep causes of the loss of the truth of Ukrainians about their linguistic past; to prove on the basis of the latest scientific discoveries the peculiarity of the linguistic contribution of the ancestors of Ukrainians to the emergence of the Indo-European linguistic family thousands of years ago; to fulfill the forecast for the future of languages. The methodology of the research is the noointegral, systemic and noohistorical methods that allow a newer way to analyze the affinity of the Ukrainian language with English and to make a forecast of changes in the role of the English language in the future. Presenting main material: the result of the study is the discovery of evidence that the Ukrainian language is not just a little branch of the Russian language, but a transformed primary Indo-European The scientists from the West were proved that Ukrainians were the part of the inventors of agriculture in Levant. During the movement on the West they chose life on the black earths of Ukraine, joined with the Arians and created the civilization Trypillya-1. Trypillians domesticated a horse, invented a wheel, created a metallurgy of bronze and formed the economic zone of the Greate Trypillya between the Carpathians and Western Siberia. All the common words of today about 400 Indo-European languages are a cloud of tags spread from the Great Trypillya. The article is devoted to the concept of international language. The analysis of contemporary world language changes is carried out in order to assess the possibility of converting English into a global language (lingua franca). Examples of the growth and decline of languages of certain peoples in the past are considered. The data on evolution and changes in the language ranking in the New Times are given. The facts of the temporary leadership of the French, German and Russian languages are revealed and the main reasons for their retreat and decline are indicated. The reasons for the global use of English in the twentieth century are explained, but the assumption about the impossibility of its transformation into the universal language of humanity in the future is expressed. A forecast of the influence of progress in computer technologies and artificial intelligence on the ways of using English and other languages is made. The fact of the appearance of the first version of the computer multilingual translator Travis-1 is noted and its rapid improvement and inclusion in the software of near-future mobile devices, which spread on the planet in billions of copies, is envisaged. Conclusions - formulated suggestions for plans for the development of the education system in Ukraine. It is proposed to use positive experience in Scandinavian countries - Sweden and Finland in modernizing the teaching of English and other foreign languages

Taming energy cost of disk encryption software on data-intensive mobile devices

Disk encryption software is frequently used to secure confidential data on mobile devices. However, it is notoriously challenging for disk encryption software to ensure its security in cryptography without involving significant energy overhead. To address the challenge, we design a both cryptographically secure and energy-efficient disk encryption software for mobile devices, Populus. On the one hand, Populus uses modular linear algebra and one-time pad technique to encrypt/decrypt sensitive data on mobile devices, thus ensuring its security in cryptograph. To illustrate, we prove Populus’s semantic security. On the other hand, Populus is based on client–server pattern. Its client side works on the kernel layer of mobile devices powered by batteries, while its server side works on the application layer of computing devices powered by fixed electric power source. The server side helps the client side do the computation tasks unrelated to plaintext/ciphertext in the encryption/decryption process, therefore, the energy cost on mobile devices significantly declines. To demonstrate, we conduct energy consumption experiments on Populus and dm-crypt, a famous disk encryption software for Android and Linux mobile devices. The experimental results show that Populus consumes 50%–70% less energy than dm-crypt.

Educational apps from the Android Google Play for Greek preschoolers: A systematic review

In the seven years since the introduction of the tablet (Apple iPad) in 2010, the use of software for smart mobile devices has grown rapidly in popularity and has become a hotly debated issue in the field of education and child development. However, the rise in popularity of mobile applications (apps) mainly addressed to young children is not in line with a corresponding increase in their quality, as there is conflicting evidence about the real value and suitability of educational apps. The purpose of this study was to examine whether self-proclaimed educational apps for Greek preschoolers have been designed in accordance with developmentally appropriate standards to contribute to the social, emotional and cognitive development of children in formal and informal learning environments. The study results were discouraging. The majority of the apps aimed to teach children the basics about numbers and letters. Overall, they were drill-and-practice-style, based on a low level of thinking skills, thereby promoting rote learning, and were unable to contribute to a deeper conceptual understanding of certain concepts.

A product-line model-driven engineering approach for generating feature-based mobile applications

Abstract A significant challenge faced by the mobile application industry is developing and maintaining multiple native variants of mobile applications to support different mobile operating systems, devices and varying application functional requirements. The current industrial practice is to develop and maintain these variants separately. Any potential change has to be applied across variants manually, which is neither efficient nor scalable. We consider the problem of supporting multiple platforms as a ‘software product-line engineering’ problem. The paper proposes a novel application of product-line model-driven engineering to mobile application development and addresses the key challenges of feature-based native mobile application variants for multiple platforms. Specifically, we deal with three types of variations in mobile applications: variation due to operation systems and their versions, software and hardware capabilities of mobile devices, and functionalities offered by the mobile application. We develop a tool MOPPET that automates the proposed approach. Finally, the results of applying the approach on two industrial case studies show that the proposed approach is applicable to industrial mobile applications and have potential to significantly reduce the development effort and time.

Operating System of Multimedia Devices in the Educational Process at Moscow State University of Printing Arts of Ivan Fedorov

Objectives: The relevance of the study is due to the fact that in the course of training at Moscow State University of Printing Arts of Ivan Fedorov in the field of information technology, until recently, traditional PCs with classical operating systems (Windows XP, Windows 7, etc.) have been used. Method: The main methods to investigate and solve this problem are modern information technologies, the introduction of which in publishing industry and journalism calls for implementation of comprehensive training in the learning process, including in the area of system software – the open mobile operating systems. Findings: This article is aimed at the revealing of the latest advances in the field of information technologies which allowed bringing a variety of multimedia devices (tablets, smart phones, etc.) to the market of technological tools, which have gained wide popularity among young people around the world. Mobile multimedia devices are supplied by manufacturers with pre-installed operating systems, which enable users to solve a variety of problems. One of these operating systems for mobile devices is Ubuntu, which in our view is convenient system software for educational institutions worldwide. Ubuntu operating system belongs to the class of Linux-like systems that do not require the acquisition of a license for use in the educational process. Improvements: The article reveals the peculiarities of this operating system and gives an example of applying such system software for mobile multimedia devices that appear in the publishing systems and applications.

Seismic volume visualization at your fingertips

Volume visualization has become an essential tool for geoscientists in the oil and gas industry. Using this technology, geosci¬entists interact with volumes of seismic data to locate, isolate, and understand the spatial relationships of important geologic features in a context-rich 3D environment. In the past decade, the continued evolution in hardware and software of mobile devices is putting desktop capabilities in everyone’s palms. As such, mobile devices are becoming more useful as an interactive 3D visualization platform. In this paper, I evaluate and demonstrate the effectiveness of mobile devices to perform seismic vol¬ume visualization. Sub-volumes of data containing different stratigraphic depositional environments were first extracted from three 3D seismic surveys. The rendered 3D graphics were examined in detail. The results illustrate that volume visualization on mobile devices enables the exploration of detailed variations in the seismic response. Therefore, it facilitates the interpretation of the imaged geologic features. I anticipate that mobile devices will revolutionize the interpretation of seismic data volumes by allowing geoscientists to visually examine their data anywhere and at any time.

A Proposed Hybrid Agile Framework Model for Mobile Applications Development

With the increasing in mobile application systems and a high competition between companies, that led to increase in the number of mobile application projects. Mobile software development is a group of process for creating software for mobile devices with limited resources like small screen, low-power. The development of mobile applications is a big challenging because of rapidly changing business requirements and technical constraints for mobile systems. So, developers faced the challenge of a dynamic environment and the Changing of mobile application requirements. Moreover, Mobile applications should adapt appropriate software development methods that act in response efficiently to these challenges. However, at the moment, there is limited knowledge about the suitability of different software practices for the development of mobile applications. According to many researchers ,Agile methodologies was found to be most suitable for mobile development projects as they are short time, require flexibility, reduces waste and time to market. Finally, in this research we are looking for a suitable process model that conforms to the requirement of mobile application, we are going to investigate agile development methods to find a way, making the development of mobile application easy and compatible with mobile device features.

Taming Energy Cost of Disk Encryption Software on Data-Intensive Mobile Devices

Disk encryption is frequently used to secure confidential data on mobile devices. However, the high energy cost of disk encryption poses a heavy burden on those devices with limited battery capacity especially when a large amount of data needs to be protected by disk encryption. To address the challenge, we develop a new kernel-level disk encryption software, Populus. Almost 98% of Populus's encryption/decryption computation is not related with the input plaintext/ciphertext, so we accomplish the computation in advance during initialization when a consistent power supply is available. We conduct cryptanalysis on Populus and finally conclude that state-of-the-art cryptanalysis techniques fail to break Populus in reasonable computational complexity. We also conduct energy consumption experiments on Populus and dm-crypt, a famous disk encryption software for Android and Linux mobile devices. The experimental results demonstrate that Populus consumes 50%-70% less energy than dm-crypt.

Monoscopic photogrammetry to obtain 3D models by a mobile device: A method for making facial prostheses

PurposeThe aim of this study is to present the development of a new technique to obtain 3D models using photogrammetry by a mobile device and free software, as a method for making digital facial impressions of patients with maxillofacial defects for the final purpose of 3D printing of facial prostheses.MethodsWith the use of a mobile device, free software and a photo capture protocol, 2D captures of the anatomy of a patient with a facial defect were transformed into a 3D model. The resultant digital models were evaluated for visual and technical integrity. The technical process and resultant models were described and analyzed for technical and clinical usability.ResultsGenerating 3D models to make digital face impressions was possible by the use of photogrammetry with photos taken by a mobile device. The facial anatomy of the patient was reproduced by a *.3dp and a *.stl file with no major irregularities. 3D printing was possible.ConclusionsAn alternative method for capturing facial anatomy is possible using a mobile device for the purpose of obtaining and designing 3D models for facial rehabilitation. Further studies must be realized to compare 3D modeling among different techniques and systems.Clinical implicationFree software and low cost equipment could be a feasible solution to obtain 3D models for making digital face impressions for maxillofacial prostheses, improving access for clinical centers that do not have high cost technology considered as a prior acquisition.