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نتیجه جستجو - بلند مدت

تعداد مقالات یافته شده: 82
ردیف عنوان نوع
1 IoT architecture for continuous long term monitoring: Parkinson’s Disease case study
معماری اینترنت اشیا برای نظارت طولانی مدت مداوم: مطالعه موردی بیماری پارکینسون-2022
In recent years, technological advancements and the strengthening of the Internet of Things concepts have led to significant improvements in the technology infrastructures for remote monitoring. This includes telemedicine which is the ensemble of technologies and tools involved in medical services, from consultations, to diagnosis, prescriptions, treatment and patient monitoring, all done remotely via an Internet connection.
Developing a telemedicine framework capable of monitoring patients over a continuous long-term monitoring window may encounter various issues related to the battery life of the device or the accuracy of the retrieved data. Moreover, it is crucial to develop an IoT architecture that is adaptable to various scenarios and the ongoing changes of the application scenario under analysis.
In this work, we present an IoT architecture for continuous long-term monitoring of patients. Furthermore, as a real scenario case study, we adapt our IoT architecture for Parkinson’s Disease management, building up the PDRMA (Parkinson’s disease remote monitoring architecture). Performance analysis for optimal operation with respect to temperature and daily battery life is conducted. Finally, a multi-parameter app for the continuous monitoring of Parkinson’s patients is presented.
keywords: IoT | Telemedicine | Continuous long term monitoring | Parkinson’s disease | e-Health
مقاله انگلیسی
2 A Secure Anonymous D2D Mutual Authentication and Key Agreement Protocol for IoT
پروتکل ایمن تأیید هویت متقابل D2D و قرارداد کلیدی برای اینترنت اشیا-2022
Internet of Things (IoT) is a developing technology in our time that is prone to security problems as it uses wireless and shared networks. A challenging scenario in IoT environments is Device-to- Device (D2D) communication where an authentication server, as a trusted third-party, does not participate in the Authentication and Key Agreement (AKA) process and only cooperates in the process of allocating and updating long-term secret keys. Various authentication protocols have been suggested for such situations but have not been able to meet security and efficiency re- quirements. This paper examined three related protocols and demonstrated that they failed to remain anonymous and insecure against Key Compromise Impersonation (KCI) and clogging at- tacks. To counter these pitfalls, a new D2D mutual AKA protocol that is anonymous, untraceable, and highly secure was designed that needed no secure channel to generate paired private and public keys in the registration phase. Formal security proof and security analysis using BAN logic, Real-Or-Random (ROR) model, and Scyther tool showed that our proposed protocol satisfied security requirements. The communication and computation costs and energy consumption comparisons denoted that our design had a better performance than existing protocols.
keywords: تأیید اعتبار و توافقنامه کلید (AKA) | ارتباط دستگاه به دستگاه (D2D) | اینترنت اشیا (IoT) | حمله جعل هویت کلیدی (KCI) | Authentication and Key Agreement (AKA) | Device to Device (D2D) communication | Internet of Things (IoT) | Key Compromise Impersonation (KCI) attack
مقاله انگلیسی
3 تشخیص BECT اسپایک براساس ویژگی‌های توالی EEG Novel و الگوریتم ‌های LSTM
سال انتشار: 2021 - تعداد صفحات فایل pdf انگلیسی: 10 - تعداد صفحات فایل doc فارسی: 35
صرع خوش‌خیم با امواج spinous در منطقه زمانی ۲ ( BECT ) یکی از شایع‌ترین syndromes مبتلا به صرع در کودکان است که به طور جدی رشد سیستم برای کودکان را تهدید می‌کند . مشخص‌ترین ویژگی ۵ BECT وجود تعداد زیادی از electroencephalogram ۶ ( EEG ) در ناحیه Rolandic در طول دوره interictal است که یک اساس مهم برای کمک به neurologists در BECT diag8 است . با توجه به این مساله , این مقاله یک الگوریتم تشخیص BECT spike را براساس توالی زمانی سری زمانی EEG ثبت می‌کند و حافظه کوتاه‌مدت حافظه بلند مدت ( LSTM ) را نشان می‌دهد . سه ویژگی متوالی دامنه زمانی , که به وضوح ۱۲ را مشخص می‌کنند , برای نمایش EEG استخراج می‌شوند . ۱۳ تکنیک نمونه‌گیری اقلیت ترکیبی ( smote ) برای ۱۴ سخنرانی در مورد مساله عدم تعادل در EEGs بکار گرفته می‌شود و ۱۵ - ( BiLSTM ) برای تشخیص سیخ آموزش‌دیده است . این الگوریتم با استفاده از داده‌های EEG ۱۵ BECT ثبت‌شده از ۱۷ بیمار Hospital ثبت‌شده از ۱۷ بیمارستان کودکان , دانشکده پزشکی University ۱۸ ( CHZU ) , مورد ارزیابی قرار می‌گیرد . این آزمایش نشان می‌دهد که الگوریتم پیشنهادی می‌تواند به طور متوسط 88.54 % F [ 1] , ۹۲.۰۴ درصد حساسیت , و ۲۰ 85.75 درصد را بدست آورد , که به طور کلی از چندین روش تشخیص استاندارد ویژگی استفاده می‌کند . عبارات راهنما: BECT | تشخیص اسپایک | حوزه زمان EEG ویژگی توالی | مدل LSTM
مقاله ترجمه شده
4 Innovation capability: The impact of e-CRM and COVID-19 risk perception
قابلیت نوآوری: تاثیر E-CRM و ادراک خطر Covid-19-2021
The e-CRM application has currently offered benefits for companies in different business sectors, especially in hospitality industry. The objective of this paper is to investigate the impact of e-CRM components (i.e. technology-based CRM, knowledge management and customer orientation) on firms’ innovation capabilities. Data was collected through a structured questionnaire survey conducted in Vietnam. The dataset consists of 213 valid responses by managers. Correlation analysis and structural equation modeling (SEM) were employed to examine the causal relationships among technology-based CRM, knowledge management, customer orientation, long-term relationships and innovation capability. The results show that knowledge management, customer orientation and technology-based CRM have positively influence on long-term relationships and innovation capability. Covid-19 risk perception has the role in enhancing the link between long-term relationships and innovation capability. From these findings, this study provides an improved understanding of how knowledge management, customer orientation and technology affect on innovating activities. This study also provides several implications for practice.
keywords: مشتری مداری | مدیریت دانش | درک ریسک | قابلیت نوآوری | CRM مبتنی بر فناوری | بخش هتل | Customer orientation | Knowledge management | Risk perception | Innovation capability | Technology-based CRM | Hotel sector
مقاله انگلیسی
5 The services field: A cornucopia filled with potential management topics
زمینه خدمات: قرنیه پر از موضوعات بالقوه مدیریت-2021
A primary aim of management research is to develop knowledge about the management of organizations. Many countries’ long-trend shift towards a service economy and the concomitant increase in the number of service organizations have stimulated advancements in service management research. However, some blind spots remain. In this article, we focus on product market stakeholders and organizational stakeholders and discuss research questions (or blind spots) that map to different areas of management literature, especially those of service management literature. We believe that attaining answers to those research questions can yield important insights that have the potential to advance management research.
Keywords: Air quality | e-commerce | Service communication | Servicescape safety and healthiness | Sustainability
مقاله انگلیسی
6 Gathering local ecological knowledge to augment scientific and management understanding of a living coastal resource: The case of Oregon’s nearshore groundfish trawl fishery
جمع آوری دانش زیست محیطی محلی برای تقویت درک علمی و مدیریت از یک منبع ساحلی زنده: مورد ماهیگیری ماهی قرمز مایل به قرمز اورگان-2021
Globally, coastal nearshore regions are an intersecting point for human and biological productivity, often serving as hotspots for subsistence, commercial, and recreational fishing activities. Despite this, many nearshore areas remain poorly understood, monitored or managed. This case study examined the nearshore sector of Oregon’s groundfish trawl fishery, which exists in shallow estuarine and continental shelf habitats common along the West Coast of North America; areas that are important for early life history stages of many commercial and recrea- tional fisheries. The West Coast groundfish fishery includes over 90 different species, 40 of which occur within Oregon’s nearshore (here defined as the portion of the shelf extending seaward to a water depth of 200 m). The very shallow portions of the Oregon Coast (the area of the shelf inshore of 55 m) have been subject to limited scientific survey monitoring, and much of the details of the ecology, health, and processes in these habitats remain poorly understood. The utilization of the nearshore region by the commercial groundfish trawl fleet is also minimally documented despite the fact that experiential knowledge (local ecological knowledge [LEK]; trawl logbooks, fish tickets, interviews) exists. This research explored the capacity of capturing LEK sources to inform and enhance understanding of the drivers of effort and the vitality of nearshore fishery resources. Our approach used statistical analysis and mapping of nearshore trawl effort from 1981 to 2017 and gathered semi- structured interviews of intergenerational fishermen to bolster data-poor areas. Insights provided by sampling strategies and historical to current knowledge of access to groundfish assemblages provide informed baselines for future management. Spatial mapping results revealed a decline in trawl effort on the Oregon continental shelf thought time. Logbook and interview data assessment illuminated market and ecological drivers of fishing behavior as well as a unique sector of the groundfish fleet in Oregon: the beach fleet, with unique market and socio-economic challenges. Findings indicate a mixed-methods approach can provide a more thorough assess- ment of long-term interest in Oregon’s nearshore groundfish fishery. Ensuring better understanding of coastal interfacing regions such as Oregon’s nearshore insights potential for better conservation and utilization of marine resources and improved monitoring in resource limited management contexts.
keywords: دانش زیست محیطی محلی | زمین های دریایی ساحل غربی ایالات متحده | اطلاعات وابسته به ماهیگیری | ماهیگیری ساحلی | Local ecological knowledge | US West Coast groundfishes | Fisheries-dependent data | Coastal fisheries
مقاله انگلیسی
7 Life history, uses, trade and management of Diospyros crassiflora Hiern, the ebony tree of the Central African forests: A state of knowledge
تاریخچه زندگی، استفاده، تجارت و مدیریت Diospyros crassiflora Hiern، درخت آبنوس جنگل های آفریقای مرکزی: وضعیت دانش-2021
The Central African forest ebony, Diospyros crassiflora Hiern, is a small tree native to the moist forests of the Congo Basin. Its appealing black heartwood was one of the first products to be exported from the Gulf of Guinea in the 17th century and is today one of the main sources of ebony globally. Like for other ebony species, its commercial exploitation raises serious questions about the long-term sustainability of its trade and the viability of its populations, but the dots are yet to be joined. An examination of the interface between biology, trade, and ecology is crucial to identify the interrelated factors that could influence the potential success of its conservation. This paper reviews scientific and grey literature, forest inventories, herbarium and trade data to provide a critical assessment of the main threats to D. crassiflora populations and gaps in the current state of knowledge. It is shown here that the species is widespread but never abundant. In the longer term the species is threatened by forest conversion to agriculture and widespread hunting of large mammals on which the species rely for seed dispersal. It is currently selectively logged principally to make musical instruments and for the hongmu Chinese market, for which only one alternative black wood, the near-threatened Dalbergia melanoxylon Guill. et Perr., is commercially available. Trade statistics suggest that exports from source countries where the species is cut under the forest concession system are relatively low compared to countries like Cameroon which has seen a recent increase in exports, and where ebony is exploited without forest management plans. Logging remains a concern where the exploitation and trade of D. crassiflora are managed in response to demand rather than informed by current stock levels, growth rate and the particular reproductive biology of this species. The recent successes of private sector initiatives to ensure the long-term supply of ebony in Cameroon are promising, but would require long-term and large-scale commitments involving direct and indirect stakeholders to develop programs for the plantation and policies for the sustainable management of the species.
keywords: آبنوس | شکار | جنگل زدایی | تجارت | جنگل مرطوب آفریقا | گیتار | Ebony | Hunting | Deforestation | Trade | African moist forest | Guitar | CITES
مقاله انگلیسی
8 The US current account, sustainability, and the international monetary system
حساب جاری ایالات متحده، پایداری و سیستم پولی بین المللی-2021
In this paper, we examine the sources of the US current account imbalances and discuss the role of the international monetary system in enabling the US in carrying such external deficits. There is evidence that the stochastic properties of the US current account are not compatible with the intertemporal national budget constraint. We argue that this is likely to be related to the dominant role of the U.S. dollar as an international reserve asset, which allows the US to meet international demand for safe assets and allows borrowing at very low interest rates. Results from a structural VAR model indicate that temporary shocks dominate the current account in the short run, whereas domestic permanent supply shocks and preference shocks contribute significantly to US current account movements in the long run. To the extent that temporary shocks stem from aggregate demand, stabilizing aggregate demand is important in achieving long-term sustainability in the current account. Finally, the paper discusses the role of the international financial system and the international role of the U.S. dollar in contributing to US external imbalances.
keywords: تنظیم بین المللی | سیستم پولی بین المللی | ذخیره ارز | تعادل تجارت ایالات متحده | International adjustment | International monetary system | Reserve currency | US trade balance
مقاله انگلیسی
9 Catching up or lagging behind? The long-term business and innovation potential of subsidized start-ups out of unemployment
عقب افتادن یا عقب ماندن؟ پتانسیل بلند مدت تجارت و نوآوری شرکت های تازه تاسیس یارانه ای از بیکاری-2020
From an active labor market policy perspective, start-up subsidies for unemployed individuals are very effective in improving long-term labor market outcomes for participants. From a business perspective, however, the assess- ment of these public programs is less clear since they might attract individuals with low entrepreneurial abilities and produce businesses with low survival rates and little contribution to job creation, economic growth, and innovation. In this paper, we use a rich data set to compare participants of a German start-up subsidy program for unemployed individuals to a group of regular founders who started from non-unemployment and did not receive the subsidy. The data allows us to analyze their business performance up until 40 months after business formation. We find that formerly subsidized founders lag behind not only in survival and job creation, but especially also in innovation activities. The gaps in these business outcomes are relatively constant or even widening over time. Hence, we do not see any indication of catching up in the longer run. While the gap in survival can be entirely explained by initial differences in observable start-up characteristics, the gap in business development remains and seems to be the result of restricted access to capital as well as differential business strategies and dynamics. Considering these conflicting results for the assessment of the subsidy program from an ALMP and business perspective, policy makers need to carefully weigh the costs and benefits of such a strategy to find the right policy mix.
Keywords: Entrepreneurship | Start-up subsidies | Business growth | Innovation | Job creation
مقاله انگلیسی
10 امضای کوانتومی مبتنی بر هویت بر پایه حالات بل
سال انتشار: 2020 - تعداد صفحات فایل pdf انگلیسی: 8 - تعداد صفحات فایل doc فارسی: 17
براساس حالت های بل، یک طرح امضای کوانتومی مبتنی بر هویت پیشنهاد شده‌ است. در طرح ما، کلید مخصوص امضا کننده توسط یک شخص ثالث قابل‌ اعتماد به نام تولید کننده کلید خصوصی (PKG) تولید می‌شود، در حالی که کلید عمومی امضا کننده هویت او (مرد)/او (زن) (مانند نام او یا آدرس ایمیل) است. پیغامی که باید امضا شود به ترتیب کد حالت های بل کدگذاری (رمزنگاری) می‌شود. برای ایجاد امضای کوانتومی، امضا کننده توالی حالت بل را با کلید خصوصی او (مرد)/او (زن) امضا می‌کند. امضای کوانتومی را می توان توسط هر کسی با هویت امضا کننده تایید کرد. طرح امضای کوانتومی ما از مزایای طرح امضای کلاسیک مبتنی بر هویت برخوردار است. نیازی به استفاده از حافظه کوانتومی بلند مدت ندارد. از سوی دیگر، در طرح ما، در طول مرحله تایید امضا، بازبینی کننده نیازی به انجام هیچ آزمون مبادله ی کوانتومی ندارد. در طرح ما، تولید کننده کلید خصوصی یا PKG می‌تواند سبب از دست دادن امضای کوانتومی شود که در بسیاری از طرح‌های امضا کوانتومی قابل‌اجرا نیست. طرح ما همچنین دارای ویژگی‌های امنیتی غیرانکار و غیر قابل جعل و غیره است. امضای ما مطمئنتر، کارآمد و عملی تر از طرح‌ های مشابه دیگر است.
کلمات کلیدی: امضای کوانتومی | امضای مبتنی بر هویت | حالت بل | آزمون کوانتومی مبادله ای
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