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نتیجه جستجو - Contextual

تعداد مقالات یافته شده: 183
ردیف عنوان نوع
1 LAMD: Location-based Alert Message Dissemination scheme for emerging infrastructure-based vehicular networks
LAMD: طرح انتشار پیام هشدار مبتنی بر مکان برای شبکه‌های خودرویی مبتنی بر زیرساخت در حال ظهور-2022
Requiring low dissemination delays and thorough vehicles coverage in the vicinity of an emergency event, Vehicular Ad-hoc NETworks (VANETs) were considered as the most adapted communication network to support alert messages dissemination. With the advent of Cooperative ITS services, emerging vehicular networks are expected to increasingly rely on Vehicle to Infrastructure (V2I) communication links, which are expected to be nominally available, with some transient and time-limited connectivity losses. The presence of V2I links paves the way to centralized network control, which can leverage vehicle-related and contextual information provided by the cloud to make more informed decisions. This paper proposes an effective alert message dissemination procedure called LAMD (Location-based Alert Messages Dissemination) for emerging vehicular networks that combines V2I broadcasts with selected V2V (Vehicle to Vehicle) rebroadcasts. The originality of our scheme lies in the selection process of V2V rebroadcasts, which is based on vehicles’ location regarding predefined rebroadcast points selected by a centralized controller. This leads to very limited collisions, low delivery delays, and high information coverage with insignificant signaling and network overhead compared to legacy VANET based dissemination techniques.
keywords: ارتباطات وسایل نقلیه | انتشار پیام هشدار | برنامه های امن | Vehicular communications | Alert message dissemination | Safety applications | SDN
مقاله انگلیسی
2 Fog Node Self-Control Middleware: Enhancing context awareness towards autonomous decision making in Fog Colonies
میان افزار خودکنترلی گره مه: افزایش آگاهی از زمینه به سمت تصمیم گیری مستقل در کلونی های مه-2022
The concept of Fog Colonies has recently been introduced in Fog Computing, and is rapidly gaining attention. As Fog Colonies are extended, Fog Colony Control mechanisms have gained significant interest. Although, there are numerous solutions efficiently supporting a Context Aware coordinating entity, exploring approaches for decentralized control remains a challenge. Towards this direction, there are efforts promoting the concept of autonomous Fog Nodes, making their own decisions with internalized control without the existence of a coordinating entity. In this paper we propose and implement a Context Aware Self-Control management middleware for Fog Nodes, enabling their Self-Management utilizing contextual information shared between Fog colony members. To that end, we employ Policy Rulebooks to define Context Aware Policies that each Fog Node can enforce. Finally, we evaluated the proposed middleware against a non Context Aware one, under exactly the same conditions, using a real-world smart building use case, focusing on performance issues related to the end-user.
keywords: Fog Computing Fog Node | Fog Colony Management | Distributed Control Software | Self Control Middleware | Autonomous Fog Nodes | Context awareness | Operational policies
مقاله انگلیسی
3 The politics behind scientific knowledge: Sustainable forest management in Latin America
سیاست پشت دانش علمی: مدیریت جنگل پایدار در آمریکای لاتین-2021
Sustainable Forest Management (SFM) seeks to achieve an equilibrium in the economic, social and environ- mental value of all types of forests. This practice contrasts with the conventional view of managing forests, in which the focus is productivity. Thus, discussions about conventional forest management versus sustainable forest management play a central role in the political and scientific agendas. However, knowledge production and its direction can be biased by different contextual factors such as the way funding is assigned by each country, institutional priorities, and constraints on international cooperation. With this paper, we aim to analyze the contribution of scientific knowledge produced in Latin America within the sustainable forest management research landscape by applying a literature review method (Scopus database for 2015–2018 period). Our results show a similar contribution of national and foreign funds and institutions supporting scientific knowledge about SFM in Latin America. Foreign funding comes mainly from United States of America, and Europe. Latin American authors lead high proportion of scientific articles, and authorship gender was more equitable between male and female researchers. The studies were mostly focused on conservation combined with productivity goals, as well as pure conservation goals, although social studies and restoration goals were also present. Our findings highlight a significant contribution to the paradigm shift in half of the scientific articles. Some studies provided recom- mendations (specific or general) derived from their results, but we did not detected a clear relationship with funding origin. Moreover, we found that the high contribution to the paradigm shift (studies supporting SFM instead of traditional management) came from institutions based in Latin America. This article aims to contribute to discussions related to scientific funding in Latin America, the North-South scientific relations, and the future of forest in times of climate change.
keywords: سیاست های جنگلداری | همکاری بین المللی | بررسی ادبیات | منابع طبیعی | تحقیق و توسعه | بودجه پژوهشی | Forestry policies | International cooperation | Literature review | Natural resources | Research and development | Research funding
مقاله انگلیسی
4 Managing micro and small enterprise supply chains: A multi-level approach to sustainability, resilience and regional development
مدیریت زنجیره تأمین شرکت های خرد و کوچک: رویکردی چند سطح برای پایداری ، انعطاف پذیری و توسعه منطقه ای-2021
Amidst the high number of frameworks associated with supply chain sustainability (SCS), proper consideration to the role and importance of micro and small enterprises (MSEs) has been missing in the literature. To address this research gap, this paper investigates the driving factors that support MSE supply chains to achieve sustainability. We employ institutional and complexity theories to broaden our understanding of the dynamics behind neglected supply chain structures, especially the ones predominantly formed by MSEs. An in-depth nested case study is carried out in a MSE supply chain in an emerging economy, where 33 supply chain players were involved in the data collection. Using a combination of deductive and inductive approaches to analyze the data, we find that to truly implement SCS, research and practice should consider not only the strategic, structural and process levels, but also the contextual level, which is critical dimension to SCS dynamics. Results show that MSE supply chains contribute significantly to regional socio-economic development due to their local roots and regional history. Also, findings demonstrate that MSE supply chains have enhanced resilience to crises (e.g., economic, political and other disruptions) because they are often focused on long-standing economic activities within the regional ecosystems. This paper contributes to theory by arguing that SCS is a much more complex phenomenon in practice than the current theory implies. Therefore, incorporating the diversity from reality and the peculiarities of MSE supply chains into the SCS debate helps the literature to get closer to the SCS practice.
Keywords: Supply chain sustainability | Micro and small enterprise supply chains | Supply chain resilience | Regional development | Emerging economy
مقاله انگلیسی
5 In defense of the one-factor doxastic account: A phenomenal account of delusions
در دفاع از حساب تک عاملی دوکساستیک: روایتی خارق العاده از توهمات-2021
According to the doxastic model, delusions are beliefs. In the metacognitive model, delusions are imaginings mistaken for beliefs. I argue that endorsement of false second-order beliefs could also create unpleasant dissonance, that mentally healthy people often endorse irrational or conflicting beliefs, and that the lack of delusion-motivated action can be explained by the influence of nonbelief factors on action. The two-factor doxastic model posits irrationality as necessary, and one metric of rationality many scholars employ is whether a response is easily understood by folk psychology. A precedent for folk-psychological acceptance of contextually bizarre beliefs as a result of personal experience can already be found in the lack of imaginative resistance encountered not in response to the impossibilities portrayed in speculative fiction, but in response to the characters’ ability to incorporate these occurrences into their mental frameworks, despite them often being at odds with these characters’ bedrock understanding of the world.
keywords: توهم | حساب Doxastic | مدل دو عامل | جنون جوانی | حساب کاربری فراشناختی | مدل یک عامل | Delusion | Doxastic account | Two-factor model | Schizophrenia | Metacognitive account | One-factor model
مقاله انگلیسی
6 Midwives knowledge of pre-eclampsia management: A scoping review
دانش ماماها از مدیریت پیشکلامپسی: بررسی اسکاپ-2021
Background: Pre-eclampsia is a multi-organ disease affecting pregnant women from the second trimester onwards resulting in multiple adverse outcomes. Sub-optimal treatment of pre-eclampsia is linked with unfavorable outcomes. It is critical for midwives as primary providers to be competent in the diagnosis and management of pre-eclampsia especially in low-and middle-income countries.
Aim: To identify what midwives’ around the world know about pre-eclampsia management. Methods: A scoping review using the JBI three-step search strategy was used to identify relevant research articles and grey literature on the subject. Database searches in PubMed, CINAHL, Cochrane Databases, Web of Science, and Scopus yielded twenty papers in addition to nine guidelines from Google Scholar. The findings were synthesised using a metasynthesis approach and presented as themes.
Findings: Four themes were identified from the extracted data: Foundational knowledge of preeclampsia; Knowledge and management of a woman with pre-eclampsia according to guidelines; Knowledge of being prepared for emergency procedures and management of emergencies; Factors influencing knowledge. The first three themes addressed diagnosis and management whilst the last theme described how contextual factors led to either increased or decreased knowledge of preeclampsia.
Conclusion: Worldwide, practicing midwives lack knowledge on several aspects of pre-eclampsia diagnosis and care. Policies on in-service training should be oriented to include innovative nontraditional methods that have the potential to increase midwives’ knowledge.
keywords: ماماها | دانش | اطلاع | پیش از اکلامپسی | اختلالات فشار خون بالا بارداری | Midwives | Knowledge | Awareness | Pre-eclampsia | Hypertensive disorders pregnancy
مقاله انگلیسی
7 Dynamic familiness capabilities and family business growth: A longitudinal perspective framed within management accounting
قابلیت‌های خانوادگی پویا و رشد کسب‌وکار خانوادگی: چشم‌انداز طولی در حسابداری مدیریت-2021
This paper examines how dynamic capabilities evolve in relation to familiness resources in order to facilitate family business growth and the way the context underpins dynamic capabilities in the family business. Drawing on an abductive research logic, it explores through a longitudinal in-depth case study and document analysis the way that dynamic capabilities and familiness resources have been deployed by a Greek-owned international shipping company over a twenty-five-year period. The findings highlight the influences exerted by the con- trolling family on the searching, seizing, and reconfiguring processes within management accounting to enable the reconfiguration of familiness resources in the firm across the dimensions of product strategy, governance, networking and staffing, and financing. These reconfigurations are essential in facilitating company development throughout critical growth junctures. We provide theoretical extensions to the resource-based view (RBV) through an integration of the concept of familiness and dynamic capability view, contextualized theorization, and temporal theorization.
keywords: کسب و کار خانواده | حسابداری مدیریت | قابلیت های پویا | خانوادگی | دیدگاه مبتنی بر منابع | منابع استراتژیک | Family business | Management accounting | Dynamic capabilities | Familiness | Resource-based view | Strategic resources
مقاله انگلیسی
8 Visual question answering model based on graph neural network and contextual attention
مدل پاسخگویی به سوالات بصری بر اساس شبکه عصبی گراف و توجه متنی-2021
Visual Question Answering (VQA) has recently appeared as a hot research area in the field of computer vision and natural language processing. A VQA model uses both image and question features and fuses them to predict an answer for a given natural question related to an image. However, most VQA approaches using attention mechanism mainly concentrate on extraction of visual information from regions of interests for answer prediction and ignore the relation between the regions of interests together with the reasoning among these regions. Apart from this limitation, VQA approaches also ignore the regions which are previously attended for answer generation. These regions which are attended in past can guide the selection of the subsequent regions of attention. In this paper, a novel VQA model is presented and formulated that utilizes this relationship between the regions and employs visual context based attention that takes into account the previously attended visual content. Experimental results demonstrate that the proposed VQA model boosts the accuracy of answer prediction on publically available datasets VQA 1.0 and VQA 2.0.© 2021 Elsevier B.V. All rights reserved.
Keywords: Visual question answering | Computer vision | Natural language processing | Attention
مقاله انگلیسی
9 تغییر یا نابودی : بررسی نقش سرمایه انسانی و توانمندی های بازاریابی فعال در بخش هتلداری
سال انتشار: 2021 - تعداد صفحات فایل pdf انگلیسی: 13 - تعداد صفحات فایل doc فارسی: 33
بسیاری از محققان تلاش کرده اند شرح دهند کدام عوامل بر مزیت رقابت آمیز پایدار تاثیر می گذارند. بدین منظور، این مقاله به ادبیات بازاریابی و مدیریت هتلداری افزوده و شواهد تجربی مبنی بر نحوه تاثیر سرمایه انسانی، توانایی بازاریابی پویا و پویایی بازار بر مزیت رقابت آمیز در بخش هتداری فراهم می سازد. داده های نظرسنجی مقطعی را از مدیران فروش و بازاریابی 165 هتل با مصاحبه مفصل در سه هتل واقع در کشورهای شورای همکاری خلیج مشتمل بر عربستان سعودی، قطر، امارات و بحرین جمع آوری کردیم. یافته ها نشان داد که سرمایه انسانی به طور مستقیم و غیرمستقیم از طریق توانمندی بازاریابی پویا نقش اساسی در گسترش مزیت رقابت آمیز ایفا می کند. برای مفهوم سازی این نقش، تحقیق ما نشان می دهد که پویایی بازار در رابطه بین سرمایه انسانی و مزیت رقابتی از طریق توانمندی بازار مداخله می کند. مفاهیم نظری و مدیریتی را برای گسترش مزیت رقابتی در بخش هتل مطرح می کنیم.
کلمات کلیدی: سرمایه انسانی | قابلیت های بازاریابی فعال | پویایی بازار | مزیت رقابت آمیز | بخش هتلداری
مقاله ترجمه شده
10 The influence of online review adoption on the profitability of capacitated supply chains
تأثیر پذیرش بازبینی آنلاین بر سودآوری زنجیره های تأمین خازنی-2021
The paper explores the influence of online review adoption on supply chain profitability under the presence of a capacity constraint. Nowadays, customers increasingly rely on online reviews for decision making, and online retailers regard reviews as a norm. Although online reviews have been extensively examined in marketing disciplines, little research has been conducted to investigate their influence from a supply chain perspective. In addition, previous research has largely focused on how online review information can influence customer purchase behaviours, but ignores the more basic decision: whether and when companies should adopt reviews. This paper examines the online review adoption decision from a capacitated supply chain perspective through mathematical modelling and simulation. The simulation considers the influence of variables including online review adoption decisions, capacity constraint level, lost sales penalty level and product quality estimation on supply chain profitability. Generally, we find that online reviews can bring more profit to the supply chain than without online reviews, although such influence is moderated by the other three variables. The findings reveal the complexity of the contextual variable impacts on online review adoption, and demonstrate that decisions concerning the adoption of online reviews should take all supply-chain-related variables into consideration rather than only aiming for increasing customer orders.
Keywords: Online reviews | supply chain | capacity constraint | simulation | inventory management
مقاله انگلیسی
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