Monday, June 1, 2020

ANALYSIS FOR ANDROID RUNTIMES ENVIRONMENT



ANALYSIS FOR ANDROID RUNTIMES ENVIRONMENT

In order to make cores fasters, more execute units are added to the cores, cache and buffer sizes are increased, frequency is increased etc. But as the chips get bigger, they will have more transistors and require more power to switch or maintain state. Although, the newer Cortex A15 improves device performance, but during its peak utilization, it draws more power than Cortex A7. Even at The idea of big.LITTLE is to pair up a tiny and ultra-low power Cortex A7 core with a faster Cortex A15 core. Now when background task or some small task runs, the A7 can take care of it alone without requiring the muscles of the A15 core. A7 and A15 cores are architecturally compatible. As shown in Figure 4, both types of cores access the same memory sub-system but they, individually retain their internal cache memory allowing the cores to be hot-swappable. It takes approximately 20,000 cycles inswitching which is negligible, given the device can hit one or two billion cycles per second. Classic Dynamic Voltage and Frequency Scaling (DVFS) is used to choose when to migrate tasksWhile using big.LITTLE architecture, over 50% energy savings measured for common activities like Web browsing and music playback (from ARM’s own tests results). For these tasks, the duo A15/A7 hits the same level of performance but with 50% energy savings than the Cortex A15 alone. Note that this data assumes no use of graphics processor or GPU. Some Web Browsers now use the GPUs to accelerate the graphic workload. Back in 2013, Huawei, Samsung and others launched octo-core chips (8 cores) in the smartphones. These chips don’t have 8 individual cores that work together on a computing task. Instead, octo-core chips follow big.LITTLE architecture and have two sets of four cores, out of them some are big and some are small, that take turns to execute the tasks. This follows the most efficient power envelope. Although factually correct but four Cortex A7/A15 duos should not be called octo-core (8-core). In the current implementations, only four of them can be activated at a single point of execution. In effective terms, when it comes down to real workload, those 8-core processors are really just 4-core processorsThe results of above Benchmark testing concludes that there’s still plenty of optimization left to be done for both the runtimes. At the moment, ART can provide slightly better battery life and performance than Dalvik. By the results of the tests, it is clear that we won’t see massive gains. Moreover, while a lots of apps on android have been optimized to work with ART, some of the apps don’t work at all. ART has to be switched with Dalvik for using them on KitKat. In conclusion to the power efficiency segment, with the current device usage pattern where the device sits idle for most of the time, big.LITTLE architecture should help the average battery life. The chip makers may choose to enable all the 8 cores at once, but this has its own trade-offs. In near future, this model is most likely to be avoided for end-user applications, but may be used in Enterprise applications. The Absolute “8-core” will be the central marketing message of coming future when it comes to mobile processors Code Shoppy

 ANALYSIS FOR ANDROID RUNTIMES ENVIRONMENT
A new runtime was introduced with Android 4.4 i.e. KitKat, which should eventually replace the Dalvik runtime. ART (Android Runtime) and Dalvik as the runtime executes the Dalvik Executable format and Dex bytecode specification. In other words, when an app is run on android, it goes through a runtime. Previously, Android’s runtime was Dalvik. While it performed well, it was still a bottleneck as it only ran the code at the moment it needed to, with a JIT compiler (Just-in-time). AOT (Ahead-of-time) compilation paradigm is followed by ART to process application instructions before they are even required. In the next section, the background of compilation on various architectures is described. In next section, ART is introduced with its new features. In next section, ART has been tested against traditional Dalvik runtime. Then before the conclusion, ARM big.LITTLE architecture is described with some results.The first gen translators to convert assembly code to machine code were Assemblers. Since the translation was without any intermediate step, assemblers were fast. Then came the generation of compilers, which translates the high level code into assembly codes, then use assemblers to translate that assembly code into machine code. However the execution of the program was almost as fast as assembly code, the compiler was slower than assemblers for obvious reasons. C compiler is from this generation. In this approach, the problem was the code not being cross platform. The next generation was interpreters which translates the code while executing it. It reads a line and converts it into a binary command and executes it, then jump to the next line. The execution was slow, since the translation happens at runtime.
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Wednesday, March 11, 2020

Developing Mobile E-Groceries Model


Abstract— In a traditional groceries market, various business models have been implemented. Most of these models failed due to e-grocery retailing process. This has led to many inefficient operation of the groceries market in many parts of the world. Previous studies have shown the application and success of e-Groceries system in a web based scheme. This paper tries to develop a prototype for e-Groceries system on android platform suitable for most mobile devices. The system’s objective includes introducing a new way of grocery shopping especially for Malaysians. The development of the system follows the generic software development process. Thus we provide a detailed system development and its implementation. During implementation we call the system as MyMart e-Groceries system. Users can select various types of groceries in a simple and friendly mobile user interface and pay for the selected choice, which will be subsequently delivered to their door steps. Keywords: mobile application; mini navigation; apps inventor; android

INTRODUCTION
Online shopping provides an easier means of purchasing product and gets them through physical delivery. Current local online shopping in Malaysia involves both product and services. They are mostly seen in a hotel business, flight ticket, apparel, take-out food and many more. There are much skepticism on ordering groceries online. This has to do with its value and price. Groceries belong to the categories of essential commodities product. Groceries are normally found in store or it can be described as a retail store that sells mostly food and other essential food items. These are mostly found in a cities ranging from large grocery stores, medium grocery stores to small groceries. The only thing that is common to them is the food stock products that they provide with other product other than food, such as clothing or household items. In most cases they are called supermarkets. They mostly comprise of several stock items. Their target is to provide the most essential product that are needed by people on day-to-day activities. Some of this store also includes a pharmacy and an electronics section. Other grocery stores, especially the large ones, are centerpieces of a larger complex that includes other facilities, such as gas stations, which will often operate under the store's name. This setup is especially common in the United Kingdom, with major chains such as Tesco and Sainsbury's having many locations operating under this format. The impact of intercultural competence on reliability on service quality and customer satisfaction in grocery retail industry in Malaysia has been discussed in Ihtiyar et al. [1]. This has to do with dissatisfaction on face-to-face groceries retails. There are many issues involves. Mobile device provide an opportunity of transaction between customers and the producers. Introducing grocery shopping system on mobile platform would make the market flexible and enhance the mobile services. A preliminary interview performed in this study suggests that local Malaysian citizens like groceries shopping and it was found that 69 percent of the locals go shopping for groceries at least once a week. While the remaining 29 percent prefer to go shopping at the markets close to their homes and very few prefer to go shopping at malls for a more variety of goods. When it comes to groceries business, both the customers and the business owners are cautious of their transactions, the fact still remains considering the prices and varieties. On the other hand, intervention promoted intentions and actual purchasing of sustainable groceries [2]. In order to ensure the sustainability of mobile groceries business, a lot of business standard has to be in place, because grocery business competition arises naturally due to high travel costs and the perishable nature of groceries appears to impart horizontal differentiation between firms [3]. Considering the issues and challenges of groceries business, this research is aimed to tackle the groceries purchasing process. This research introduces a mobile grocery shopping system targeting Malaysians within metropolitan Kuala Lumpur in Malaysia in order to provide easier means of buying and selling of groceries by Malaysians. The systems will run on mobile platform in order to enhance the flexibility of the business. Among some previous system is the one propose by Joo et al. [4] which is agent based system. The agents gather grocery information from several store server agents and compare it with user's preferences of groceries and stores. The rest of this paper is organized as follows: section 2 provides a review of literature and background of the related work on groceries and groceries businesses. Section 3describes the proposed system development process in detail. It also discusses the generic software development process and how it applies to the proposed system. Section 4 provides the result of the work, finally section 5 presents the conclusion. 
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ANALYSIS AND DESIGN
A.Requirement analysis Requirement analysis of the entire tools, features, software and hardware were undertaken at this step. The software required for the development of the proposed system are Java for Android application, with Eclipse IDE, Google APP inventor, and other API libraries. For the development of the web based system, MySQL and XAMPP is used. Additional software used for the completion of the development includes photo and image editing tools. The major feature of the system dwells on the benefit for both customer and retailer; the key feature is aimed at reducing transaction time between the customers and the retailers, in terms of purchasing groceries. This will ensure speedy business and enable customers to have more leisure time by minimizing the time they require to shop for groceries. This is expected to be achieved through the interface and interaction design. B.Use case analysis Extreme programming suggests that the development begins with planning of the project management; followed by the planning of the design phase, which might includes the pilot testing or simulation of the system development prior to real development and the creation of system images and icons. The coding phase is the actual system development where the design. Figure 1 below shows the administrator’s use case diagram. This is normally the case when it comes to generic software development process. The uses case of the system is intended to show the flow from administrator to the users. The administrator uses case provide a direct interaction with login page, viewing users personal information, updating inventories and promotions, viewing order details and a login out page. Figure 1: Use Case diagram of administrator system Figure 2 shows is the Use Case diagram of user or client. In this diagram the customer can register, login to the application, view the inventory in the application, view promotion, update information, make purchases of the product they want and clear his/his cart. The users registered in the system, will be tracked and their can update their personal information as time goes on. 3131
Figure 2: Use Case diagram of user system C.Business logic analysis The business logic provides the ease at which data flows throughout the system. This is explained in the class diagram presented in Figure 3. The database design portrays how the database would interact throughout the flow of request and response. When customers purchased products, the order will be stored in the order table. Order table is related to the order item table which consists of order id, product id and quantity. Order and order item tables will contribute to the purchase history which is receipt table. Product table gives the customer the information of product id, name, price, code and category so it will be easy for them to make purchase. There are five tables in the whole system. There are the databases used in the application. When customers registered, the data will be saved on the customer table. Order table contains order information from the customers. Order item table stores data for quantity purchased by the customers. When the transaction has been done, all the history of purchased products will be stored in the receipt table also with the delivery date. Product table stores the information of products in the inventory. When users log in they will use the system to browse or purchase items. Once a purchase has been made, the system will then forward the purchase details to the merchant. The merchant will then give out the orders to the delivery department and the items purchased will directly sent to the user registered address.


Monday, January 13, 2020

Iot Based Garbage Monıtorıng and Clearance Alert System

Iot Based Garbage Monıtorıng and Clearance Alert System

Android PHP Projects

The Internet of Things has become the hottest invention of the time. IoT is nothing but a technology in which all of the physical devices are connected to each other by mainly a wireless network connection without a minimum of human involvement in order to maintain a clean environment. Garbage monitoring system using IoT can decrease a large amount of human labour required for garbage monitoring in different area. In some areas where the population is less the garbage storage is also less but in places where there is more number of habitants the garbage is generally more. If the garbage collector truck can able to keep a online tracking of where the garbage is required immediate clearance then it will follow the route where the truck is first required to clean the garbage, without on spot monitoring To avoid unhygienic consequences the smart bin containing garbage for more than two days will be able to send immediate alerts. By 2030 the many parts of the universe will get developed as well as more populated as a result of which the garbage amount will also increase. So to overcome this problem the implementation of this paper may be useful. This paper also proposes the route tracking system which will provide the route the truck will follow while collecting the garbage and visit the bins which is more filled. As a result of which it does not have to travel all bins and petrol or diesel will be saved . II.RELATED WORKSAttributable to a change in perspective toward Internet of Things (IoT), inquires about into IoT administrations have been directed in an extensive variety of fields. As a noteworthy application field of IoT, squander administration has turned out to be one such issue. The nonappearance of proficient waste administration has caused genuine ecological issues and cost issues. In this way, in this paper, an IoT-based shrewd junk framework (SGS) is proposed to decrease the measure of nourishment squander. In a SGS, battery-based shrewd rubbish canisters (SGBs) trade data with each other utilizing remote work systems, and a switch and server gather and break down the data for benefit provisioning. Moreover, the SGS incorporates different IoT systems thinking about client comfort and expands the battery lifetime through two sorts of vitality effective activities of the SGBs: remain solitary task and collaboration based activity. 

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