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Purpose – This study aims to design and build a wireless supervisory control and data acquisition (SCADA) system based on Protocol AX.25 with the aim of monitoring the performance of several parameters in Microhydro Power Plant (MHPP). This system can monitor several MHPP parameters such as voltage, current, frequency, and turbine rotation so that it can be accessed directly at one central location.

Design/Methodology/Approach – The design is done by taking into account the real parameters that exist in the MHPP. Some parameters that become the main object to see the performance of MHPP are voltage, current, frequency, and turbine rotation. The voltage generated by the MHPP must be adjusted to the voltage supplied by State Electricity Company to the consumer, including the phase used. The resulting stream should also be monitored for power to be adjusted to the turbine spin. The generator frequency is kept stable according to the standard frequency of the State Electricity Company generator.

Findings – The remote terminal unit (RTU) system has been simulated using 2 ACS712 current sensors, voltage sensor, zero crossing point, frequency sensor, and rotation sensor functionalized to monitor MHPP parameters. The AX.25 protocol has been applicable in the wireless SCADA network for monitoring the performance of MHPP by embedding in KYL-1020UA transceiver radio using the 433 MHz frequency and the audio frequency shift keying modulation system. Radio transmitter KYL-1020UA has been successfully simulated to send data from sensors to display on the computer through SCADA built applications. The data changes in the RTU section can be displayed properly on the graphic user interface in accordance with the existing display at the MHPP location.

Research Limitations/Implications – There are only two RTUs that will be connected to communicate, in this case MHPP-1 with callsign “RTU-001” and MHPP-2 with callsign “RTU-002.” While the existing devices in the data access section parameters MHPP as master station with callsign “MSSCADA” monitoring the performance of parameters sent from the RTU. There is no collision or error in data transmission. Baudrate is varied at 1,200 bps, 2,400 bps, 4,800 bps, and 9,600 bps for effective throughput calculation and AX.25 protocol efficiency. The transmission distance is varied at 100 m, 200 m, 300 m, and 500 m to see the bit error rate with baudrate 1,200 bps and 9,600 bps.

Practical Implications – This product is expected to be applied to several MHPP locations in Aceh Province so that its monitoring system is more centralized and efficient.

Originality/Value – This research if for the efficient monitoring of several MHPP located far apart and can be monitored in one central location so that operators do not have to be located at the plant site.

That teaching and learning with technology has no meaning apart from teachers and learners is the important message of this fine collection of essays. The editors, Sharon Tettegah and Richard Hunter, are to be commended for their timely volume entitled, Technology and Education: Issues in Administration, Policy, and Applications in K-12 Schools. While the message that machines are meaningless without human minds seems self-evident, there is something about computerized technologies – in schools especially – that undermines and over-rides this important insight. At a time when the wonders of “wireless” and “wiki” distract more than ever from the main educational game, this wide-ranging anthology presents a persuasive and powerful testimony reaffirming the fundamental principle that educational technologies are only as effective as the curriculums, the pedagogies, and the assessment practices that frame their usage.

The article discusses aspects of the process of privatization/deregulation/restructuring as part of a global phenomenon in the telecommunications industry, considering the case of Brazil. The objective is to analyze the local implications of that global process focusing on its effects on the unions. The article examines the unions’ new strategies and agendas facing the dramatic changes in the industry. Some evidences indicate that the unions were negatively affected by the changes but despite the losses, the new situation forced a reaction and new strategies are being carried out although it seems difficult to re-gain the previous influence. The argument asserts that the global-local relations cannot be examined from a unilateral dimension, instead must be seen as a dialectical movement.

This chapter presents the Smart Irrigation system using the Internet of Things (IoT). IoT Technology is a network of physical objects that are connected with sensors, software, etc. This chapter concludes the project based on the agriculture field that automates the irrigation process and on the agriculture field that automates the irrigation process and solves the challenge of water consumption in those areas. We have developed the system using different sensors like (1) Soil Moisture sensor, which measures the moisture present in the soil, (2) Humidity and Temperature Sensor (DHT11), which traces the temperature change. All these sensors are connected to the Node MCU ESP8266 microcontroller, which is also a Wi-Fi module. It uploads the data to the cloud and displays it in the form of readings detected by the Blynk Application. This sensor's reading values control the pump for emergency purposes, such as stopping the pump for irrigation. Thus, this project can automate the irrigation process by analyzing soil moisture and climatic conditions, covering essential aspects like less labor, power consumption, reliability, and cost.

The purpose of this paper is to describe the interactions between accounting and marketing activities in a Taiwanese telecommunication firm by demonstrating the dramatic impact that improved costing methods had on the firm’s customer portfolio management activities and consequently on the firm’s bottom line.

The paper presents a case study of a firm in the highly competitive telecommunications industry in Taiwan. The case study was constructed by interviewing key individuals within the organization over an extended period and supplementing those reports with an analysis of internal company documents.

The firm dramatically increased profitability through the integration of activity-based costing into their customer portfolio framework requiring marketing and accounting functions to work closely together. In this rapidly evolving market, cost allocation and customer portfolio management are indispensable. Identifying accurate costs and keeping key customers is a critical issue for the case company. While theoretically the approach is simple, in practice considerable hurdles needed to be overcome.

While considerable literature suggests that customer profitability drives the management of an organization’s customer portfolio, critical to the success of such an endeavor is the accurate calculation and allocation of costs to individual customers. As an interdisciplinary study, this paper provides insights for both accounting and marketing highlighting their reliance on each other in a sound firm. The results of this paper will serve as a supplement to past customer portfolio management research as well as a reference for any firm seeking to enhance their approach to portfolio management.

Health scientists and urban planners have long been interested in the influence that the built environment has on the physical activities in which we engage, the environmental hazards we face, the kinds of amenities we enjoy, and the resulting impacts on our health. However, it is widely recognized that the extent of this influence, and the specific cause-and-effect relationships that exist, are still relatively unclear. Recent reviews highlight the need for more individual-level data on daily activities (especially physical activity) over long periods of time linked spatially to real-world characteristics of the built environment in diverse settings, along with a wide range of personal mediating variables. While capturing objective data on the built environment has benefited from wide-scale availability of detailed land use and transport network databases, the same cannot be said of human activity. A more diverse history of data collection methods exists for such activity and continues to evolve owing to a variety of quickly emerging wearable sensor technologies. At present, no “gold standard” method has emerged for assessing physical activity type and intensity under the real-world conditions of the built environment; in fact, most methods have barely been tested outside of the laboratory, and those that have tend to experience significant drops in accuracy and reliability. This paper provides a review of these diverse methods and emerging technologies, including biochemical, self-report, direct observation, passive motion detection, and integrated approaches. Based on this review and current needs, an integrated three-tiered methodology is proposed, including: (1) passive location tracking (e.g., using global positioning systems); (2) passive motion/biometric tracking (e.g., using accelerometers); and (3) limited self-reporting (e.g., using prompted recall diaries). Key development issues are highlighted, including the need for proper validation and automated activity-detection algorithms. The paper ends with a look at some of the key lessons learned and new opportunities that have emerged at the crossroads of urban studies and health sciences.

We do have a vision for a world in which people can walk to shops, school, friends' homes, or transit stations; in which they can mingle with their neighbors and admire trees, plants, and waterways; in which the air and water are clean; and in which there are parks and play areas for children, gathering spots for teens and the elderly, and convenient work and recreation places for the rest of us. (Frumkin, Frank, & Jackson, 2004, p. xvii)

This chapter examines the experience of Russia's cities in the implementation of smart solutions. Previous theoretical and empirical studies cover a variety of dimensions, involved in the concept of a smart city, and practical issues concerning technologies, urban management, business models which improve urban residents' quality of life through digital technologies, artificial intellect under the conditions of creating appropriate infrastructure. In this chapter, we present the results of the analysis of some significant information about smart solutions deployed in Russian cities nowadays. We show how smart solutions get allocated among Russian cities and among different domains of this kind of solutions. Unlike most of other countries, smart solutions in Russia are less concentrated in such domains such as sustainable development or transport. Instead, a large number of relevant projects in Russia are concentrated in the field of informatization of urban life and energy efficiency. This feature is associated with budget centralization, the implementation of national programs by the Russian Federal Government. Consequently, in general, the Russian model of a smart city is less focused on demand, but to a greater extent it can be classified as supply-driven.