scholarly journals Dark Charger with LDR and BC 547

2019 ◽  
Author(s):  
Aishik Das ◽  
Arnesh Sen ◽  
Debasmith Das

Nowadays with the invent of new technologies the processors in the electronic devices have improved both in performance and speed. QUALCOMM has come up with its design like the MSM7225 which is a 1 core up to 800 MHz Cortex-A5(ARMv7): 32K+32K L1, 256K L2 and the APQ8055 fro the Series 2 which is a 1 core up to 1.4 GHz Scorpion: 32K+32K L1, 384K L2 and Media Tech is in competition with them, but everything comes at a price in this world and here the price paid is the battery life of the devices which results in less TOS(Time on Screen). Now to maintain that TOS frequent charging is done hence consumption of power or electricity is more resulting in more use of resources which is a concern for third world countries. We need to reduce that use to some extent. In this paper a simple technique of cascading 2 circuits namely the dark sensor using a light dependent resistor and a charging circuit of a charger using IC7805 voltage regulator is being used. The result is dark charger which can be used to charge when there is no electricity hence increasing the TOS and use of less electricity .

Author(s):  
Patricia Coelho de Soárez ◽  
Vera Lúcia Edais Pepe ◽  
Hillegonda Maria Dutilh Novaes

Abstract In Brazil, there is no consensus on the concept of hospital-based health technology assessment (HB-HTA). There is great variability in the existing models and difficulty in evaluating their results—whether in respect of clinical decisions, quality of care, and hospital policy and management or in respect of optimizing the use of resources. This study aims to discuss the experiences of HB-HTA, its integration into the regulatory system for the adoption of new technologies into the Brazilian public (SUS) (Unified Health System), and its main challenges. During a workshop, a panel of specialists in HTA and/or HB-HTA was formed, representative of four different perspectives: (i) Health services and health technology assessment units, (ii) Academia, (iii) Secretary of State for Health, and (iv) the Federal SUS sector. This was followed by discussion, a preliminary consensus, contributions from the audience, a plenary session, and a final consensus. HB-HTA is not institutionalized, nor is it part of the regulation system for the adoption of new technologies in the SUS. The main challenges are the difficulties in creating qualified teams, financial support, and sustainability. The work of these bodies in respect of the evaluation of new technologies deserves further studies analyzing the relationship between the pressure for adoption from the hospital team and industry professionals and legal rulings. It is necessary to strengthen HB-HTA culture and implement this policy in hospital management, making assessment bodies a part of managerial and decision-making processes in hospitals, and develop regional collaborative networks and a national network of HTA.


2021 ◽  
Author(s):  
◽  
Tabitha Gaylyn Kura McKenzie

<p>What are the effects of using mobile devices as part of teacher professional development focused on teaching and learning the Māori language for Māori immersion educational settings? Answers to this question are explored by researching the extent to which electronic devices could be an effective strategy to address the crisis of the continuing decline of the Māori language. Another issue explored in the research is whether learners make expected gains in language proficiency through the use of mobile devices in comparison to standard face-to-face methods of language instruction.  An indigenous framework, Hei Korowai, was used to guide the research and ensure the practices used were culturally appropriate, particularly when entering into and negotiating the research project with participants. Kaupapa Māori and Māori centred approaches were also drawn on to gather data from semi-structured interviews, observations of mobile device use, online questionnaires, and Māori language proficiency tests results. Fifty two participants in total took part in the research, 46 from a PLD programme that used mobile devices and 6 from a separate PLD programme that used mainly face-to-face instruction.  Electronic forms of second language acquisition could be advantageous for learners to access audio and video content on the move and at a time, pace and place convenient for them. The capacity to have literally a library’s worth of resources, functions and internet connectivity all in one tool and at the touch of a button could also be of particular significance to users. Conversely, participant attitudes about technology, varied needs for initial and on-going training in how to operate the electronic devices, and interaction preferences were challenges experienced with utilising the device as part of the language learning and teaching process. Videos viewed on the device could also be seen as one-way learning with a lack of spiritual connection and no opportunities for discussion about content, potentially causing road blocks for learners who need extra support.  Face-to-face instruction was a preferred method for participants and the physical presence of the teacher highly valued to allow the space to pose and answer questions and receive an immediate response, which is not possible when learning via videos on a mobile device. However, there was acknowledgement of the complementary nature and value of utilising the mobile device followed by face-to-face meetings.  Evidence suggests that Māori have been quick to adopt and adapt new technologies since the arrival of the early settlers to the shores of Aotearoa. Could technology be the panacea, the cure-all for the revitalisation of the Māori language, a tool that provides access to language, culture and identity to the multitudes? This research tests the hypotheses in the context of two items of modern technology, the iPod Touch® and the iPad®.  The limitations of the research include potential bias in interpretation given the researcher’s insider position, the relatively small scale of the project, and the absence of a widely accepted theoretical framework for mobile learning. Critical questions that still remain are the implications of promoting ‘one Māori language’ for a large-scale programme and the risks in doing so for the preservation of tribal dialect and community identity. This study has, however, begun the conversation about the use of mobile devices in Māori medium educational settings, and it may contribute to an understanding of how to design technologies, media, and interactions to support learning within these settings towards innovative practices.</p>


2019 ◽  
pp. 198-211
Author(s):  
Tamara Amoroso Gonçalves ◽  
Daniela Rosendo

New technologies are changing the way men and women live their lives. As a new communication technology, the Internet can be used to both harm and promote human rights. When it comes to gender relationships, social inequalities might be reflected online, regarding access and the ways technologies are used. Hate speech, porn revenge and other ways to offend women's rights online are discussed, leading to questions related to possible limitations on freedom of expression. This chapter examines legal solutions that have been proposed in Brazil regarding electronic devices and Internet regulation and considers how restrictions on freedom of expression can be addressed in a human rights perspective.


Author(s):  
Edwar Romero ◽  
Gerardo Carbajal ◽  
Robert Warrington ◽  
Michael Neuman

This study presents a quantitative analysis of experimental data for extracting energy from human body motion and its possibility of powering portable electronic devices, such as consumer electronics or biomedical monitoring sensors. Since portable electronic devices are typically limited by the size and lifespan of batteries, energy harvesting shows potential as alternative for extending battery life. The acceleration was collected experimentally from 10 subjects while walking and running at different velocities on a treadmill. The acceleration results were studied and a figure of merit consisting of the acceleration-squared-to-frequency was found to determine, in addition to the quality factor, as the important factors for optimal energy harvesting. It was determined that from average walking an energy harvester can produce a power output density greater than 1mW/cm3.


2011 ◽  
Vol 673 ◽  
pp. 143-148
Author(s):  
Greg Kennedy ◽  
Naoyuki Wada ◽  
Y. Hayashi ◽  
M. Kurihara ◽  
Kazuyuki Hokamoto ◽  
...  

Electroluminescent, EL, materials are of interest in providing high brightness for display screens found in portable electronic devices, where the battery life is limited. Currently organic luminescent materials are being used, but the lifetime is low due to the degradation of the organic material under electric field over time. Some recent work with inorganic material of zinc sulfide has indicated high brightness at very long life times. This work focuses on the thermal processing of the zinc sulfide based EL material with trinitrotoluene, TNT. The zinc sulfide based phosphor and TNT are placed in a stainless steel container that can withstand high pressure. After closing, the chamber was evacuated and subsequently heated to over 300°C. The ZnS based phosphor was heated to a high temperature as the TNT decomposed. The sample was recovered after cooling and separated by optical observation of photoluminescence with a ultraviolet lamp. X-ray diffraction analysis showed that some transformation to hexagonal wurtzite phase occurred and was retained after cooling. EL and photoluminescence, PL, measurements were performed to characterize the luminescent properties of the material. Results of SEM observations of the particle sizes are discussed. The most recent data shows that blue luminescence at 450nm can be obtained by the treatment of ZnS phosphor with TNT in this high pressure containment device.


Author(s):  
Chia-Cheng Chao ◽  
Ming-Hung Hsu

In all areas of medicine, especially in radiology, computers are increasing year by year. Filmless radiology, speech recognition software, electronic application forms, and teleradiology are recent developments that have greatly improved radiologists' performance. This research explores radiology software trends, predictions, and the challenges posed by informatics and historical trend analysis. The rationale behind this research is that information technology (IT) is overgrowing almost every day. We must continuously seek new ways to apply IT to make more use of resources. Consequently, IT becomes increasingly crucial to radiology organizations' innovative thinking, workflow, and business models. This study aimed to analyze all radiology software publications in the Science Citation Index (SCI). From 1991 to July 2021, SCI was used to search for publications systematically. We have also widely used this historical method in radiology software research. The findings and discussions are base on an assessment of trends, predictions, contributions, and challenges in radiology software, and we are exploring radiology software with six evolutionary stages. The gift of this research is that radiology managers realize that the use of new information technologies is closely related to survival in a competitive environment. Radiology companies can review these new technologies to develop more innovative business models and services to improve operational deficiencies.


2017 ◽  
pp. 137-151
Author(s):  
Olena BILOUSOVA

Introduction. Research, development and creation of innovation as a prerequisite for a gradual transition to the fourth industrial revolution will require significant financial resources. Deficit of free public and private capital, the existence of potential risks of innovation make it difficult to attract resources for innovation and investment projects. Purpose. Identify financial support for innovation, causes inefficient investment generalize the experience of the developed of OECD countries, outline ways to improve tax legislation in Ukraine. Results. The main results of the study. In the period of 2011–2015. The main source of financing innovations were the resources of enterprises, as well as significantly reduced funding from the budget, foreign investments and other sources. Revealed that the fiscal stimulus, including the application of the tax legislation accelerated depreciation of fixed assets – not intensified investment and innovation processes. Financial resources are concentrated on providing ongoing activities, rather than on upgrading technology to the level of new technological structures. Research experience providing financial innovation in developed OECD countries and Vietnam showed that the structure of sources of financial support is of secondary importance compared to the volume of financing, the ability to attract resources for co-financing of state enterprises, financial institutions, innovation funds; the use of innovative financial instruments to attract resources. Conclusion. The process of financial support innovation offered to restore fiscal incentives to new conditions – to achieve efficiency innovation (creating an innovative product, the introduction of innovative new technologies, innovative renewal of fixed assets, etc.), targeted use of resources from the use of tax incentives and methods for accelerated depreciation.


2017 ◽  
Vol 1 (1) ◽  
pp. 105-111
Author(s):  
Aneliya Mitkova Stoyanova ◽  
Tatyana Mechkarova ◽  
Krastin Yordanov

The efficient use of resources on the basis of the development of scientific and technical progress requires widespread implementation of new technologies for processing of metals, such as plas-ma, cathode-ray, detonation and other methods that allow to increase the lifetime of machines operation and reduce the materials and energy consumption throughout production.One of the new highly productive methods for obtaining a high-quality surface is the plasma sur-face processing (gouging) of metals. It is one of the most effective methods for surface pro-cessing applied in modern metal-processing facilities. Unlike other methods for surface pro-cessing this method includes the use of an electric arc and the produced plasma has a tempera-ture which reaches tens of thousands degrees Celsius. At such temperature, not only structural grade steel alloys can be processed, but in-fact all types of metals. The aim of this paper is to investigate the relation between the technological parameters of the process air-plasma surface gouging and the quality characteristics of the obtained surface lay-ers.The relations between technological parameters of the process air-plasma surface gouging of metals and quality parameters were obtained by using rotatable design of experiments and re-gression analyses techniques.


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