A review of smart homes-Present state and future challenges

The study was carried out to assess the determinants of household food security among rural households in Sekyere-Afram Plains District of Ghana Data were collected from 100 randomly selected households through the use of structured questionnaires Analytical techniques employed included descriptive statistics to analyze the characteristics of respondent households, and logistic regression model to examine the determinants of food security among the households surveyed Among the variables considered in the model, household size, farm size, off-farm income, credit access, and marital status were found to significantly influence household food security Consistent with a priori expectation, larger households were found to be food insecure compared with households with smaller sizes, ceteris paribus Also, consistent with findings from previous empirical studies, farm size, off-farm income and credit access were found to have significant positive effect on household food security The study, therefore, recommended improved access to credit for rural households and diversification of household economic activities to include off-farm income generating businesses to improve food security at the household level

Determinants of household food security in the sekyere-afram plains district of ghana

This paper describes the complete design process of a passive prosthetic foot manufactured of Polylactic acid (PLA) It focuses on the reduction in the weight of prosthetic feet Most of the prosthetic feet are designed with more weight and material than required The structure of this passive prosthetic foot is designed and optimized as light as possible by using topology optimization The topology-optimized model is printed from a Three-dimensional (3D) printer directly rather than interpreting the model using a Computer-aided design (CAD) software The finite element analysis and the experiments are conducted to validate the structure The test equipment is designed and installed for simulating the boundary conditions of the Heel strike (HS) and Toe off (TO) Since the weight of the prosthetic directly affects the mobility of patients, the weight of the proposed model is reduced 62 % when compared initial model to the final model

Design and optimization of prosthetic foot by using polylactic acid 3D printing

A stress test methodology aimed at increasing chances of discovering faults related to network traffic in distributed systems is presented. The technique uses the UML 2.0 model of the distributed system under test, augmented with timing information, and is based on an analysis of the control flow in sequence diagrams. It yields stress test requirements that are made of specific control flow paths along with time values indicating when to trigger them. Different variants of our stress testing technique already exist (they stress different aspects of a distributed system) and we focus here on one variant that is designed to identify and to stress test the system at the instant when data traffic on a network is maximal. Using a real-world distributed system specification, we design and implement a prototype distributed system and describe, for that particular system, how the stress test cases are derived and executed using our methodology. The stress test results indicate that the technique is significantly more effective at detecting network traffic-related faults when compared to test cases based on an operational profile.

Traffic-aware stress testing of distributed systems based on UML models

The 4th edition of this popular Handbook continues to provide an easy-to-use guide to the many exciting new developments in the field of optical fiber data communications. With 90 per cent new content, this edition contains all new material describing the transformation of the modern data communications network, both within the data center and over extended distances between data centers, along with best practices for the design of highly virtualized, converged, energy efficient, secure, and flattened network infrastructures. Key topics include networks for cloud computing, software defined networking, integrated and embedded networking appliances, and low latency networks for financial trading or other time-sensitive applications. Network architectures from the leading vendors are outlined (including Smart Analytic Solutions, Qfabric, FabricPath, and Exadata) as well as the latest revisions to industry standards for interoperable networks, including lossless Ethernet, 16G Fiber Channel, RoCE, FCoE, TRILL, IEEE 802.1Qbg, and more. It is written by experts from IBM, HP, Dell, Cisco, Ciena, and Sun/ Oracle. It features case studies and 'How to...' demonstrations on a wide range of topics, including Optical Ethernet, next generation Internet, RDMA and Fiber Channel over Ethernet. It covers quick reference tables of all the key optical network parameters for protocols like ESCON, FICON, and SONET/ATM and a glossary of technical terms and acronyms.

Handbook of Fiber Optic Data Communication: A Practical Guide to Optical Networking

Introduction to Data Acquisition & Control Analog and Digital Signals Signal Conditioning The Personal Computer for Real Time Work Plug-in Data Acquisition Boards Serial Data Communications Distributed & Standalone Loggers/Controllers IEEE 488 Standard Ethernet & LAN Systems The Universal Serial Bus (USB) Specific Techniques The PCMCIA Card Appendix A: Glossary Appendix B: IBM PC Bus Specifications Appendix C: Review of the Intel 8255 PPI Chip Appendix D: Review of the Intel 8254 Timer-Counter Chip Appendix E: Thermocouple Tables Appendix F: Numbers Systems Appendix G: GPIB (IEEE-488) Mnemonics & their Definition Appendix H: Practical Laboratories & Demonstrations Appendix I: Command Structure & Programming.

Practical Data Acquisition for Instrumentation and Control Systems

There are many data communications titles covering design, installation, etc, but almost none that specifically focus on industrial networks, which are an essential part of the day-to-day work of industrial control systems engineers, and the main focus of an increasingly large group of network specialists.The focus of this book makes it uniquely relevant to control engineers and network designers working in this area. The industrial application of networking is explored in terms of design, installation and troubleshooting, building the skills required to identify, prevent and fix common industrial data communications problems - both at the design stage and in the maintenance phase.The focus of this book is 'outside the box'. The emphasis goes beyond typical communications issues and theory to provide the necessary toolkit of knowledge to solve industrial communications problems covering RS-232, RS-485, Modbus, Fieldbus, DeviceNet, Ethernet and TCP/IP. The idea of the book is that in reading it you should be able to walk onto your plant, or facility, and troubleshoot and fix communications problems as quickly as possible. This book is the only title that addresses the nuts-and-bolts issues involved in design, installation and troubleshooting that are the day-to-day concern of engineers and network specialists working in industry.

Practical Industrial Data Networks: Design, Installation and Troubleshooting

Instrumentation and control systems are highly reliant on data communications, so a working knowledge of the latest communications technologies and the essential protocols is essential for anyone designing, specifying or using instrumentation and control systems. This book is the only title on the market designed specifically for this audience. This is a comprehensive treatment of industrial data communication systems. Commencing with a thorough discussion of the popular RS-232, RS-422 and RS-485 standards it then moves on to industrial protocols, industrial networks and the communication requirements for the 'smart' instrumentation which is becoming de rigeur in industry today. The book also provides a solid grounding in the various Fieldbus and DeviceNet standards on the market today. This book provides you with the knowledge to analyse, specify and debug data communications systems in the instrumentation and control environment.Key Features

 The essential guide to communications techologies and protocols for engineers designing, specifying or using instrumentation and control systems
 Provides the knowledge required to analyze, specify and debug data communication systems, introducing the latest digital technologies
 Coverage includes RS-232, RS422 and RS-485 standards, industrial networks and protocols, smart instrumentation, FieldBus and DeviceNet standards

Practical Data Communications for Instrumentation and Control

This chapter describes the main components of typical plug-in boards and their uses in a data acquisition and control system. Computer plug-in data acquisition and control boards often represent the lowest cost alternative for a complete data acquisition and control system. As they interface directly to the host computer's I/O expansion bus, they are generally compact, and represent the fastest method of gathering data and changing outputs. These boards are most commonly used in applications where the computer is close to the sensors being measured or the actuators being controlled. Alternatively, they can be interfaced to remotely located transducers and actuators via signal conditioning modules known as two-wire transmitters. Examples of plug-in boards are—analog input (A/D) boards, analog output (D/A) boards, digital I/O boards, and counter/timer I/O boards. This chapter discusses in detail important specifications associated with each classification of plug-in board. The chapter also discusses different techniques and important considerations when interfacing analog and digital input and output signals to plug-in boards, as well as different sampling techniques.

Plug-in data acquisition boards

This chapter reviews the fundamental definitions and basic principles of digital serial data communications. The chapter details two of the most popular and common interface standards used in data acquisition and control systems: RS-232 and RS-485. The RS-232 standard is designed for the connection of two devices: data terminal equipment (DTE), such as a computer or printer; and data communications equipment (DCE), such as a modem. The EIA RS-485 is the most versatile of the EIA standards, and is an expansion of the RS-422 standard. It allows up to 32 line drivers and 32 line receivers on the same line. It incorporates the advantages of balanced lines with the need for only two wires (plus signal common) cabling. RS-485 provides reliable serial communications for: distances of up to 1200 m, data rates of up to 10 Mbps, up to 32 line drivers permitted on the same line, and up to 32 line receivers permitted on the same line. This chapter also examines the most common industrial protocols, including methods for detecting errors in communication, which is an important consideration in noisy industrial environments. Troubleshooting and testing serial data communications circuits is also discussed in detail.

Serial data communications

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Steve Mackay

Author Tools

Chat about Author