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Efficient biometric-based identity management on the Blockchain for smart industrial applications
مدیریت هویت مبتنی بر بیومتریک کارآمد در Blockchain برای کاربردهای صنعتی هوشمند-2021 In this work, we propose a new Blockchain-based Identity Management system for smart industry. First, we describe an efficient biometric-based anonymous credential scheme, which supports selective disclosure, suspension/thaw and revocation of credentials/entities. Our system provides non-transferability through a freshly computed hidden biometric attribute, which is generated using a secure fuzzy extractor during each authentication. This mechanism combined with offchain storage guarantees GDPR compliance, which is required for protecting user’s data. We define blinded (Brands) DLRep scheme to provide multi-show unlinkability, which is a lacking feature in Brands’ credential based systems. For larger organizations, we re-design the system by replacing the Merkle Tree with an accumulator to improve scalability. The new system enables auditing by adapting the standard Industrial IoT (IIoT) Identity Management Lifecycle to Blockchain. Finally, we show that the new proposal outperforms BASS, i.e. the most recent blockchain-based anonymous credential scheme designed for smart industry. The computational cost at the user-side (can be a weak IoT device) of our scheme is 8-times less than that of BASS. Thus, our system is more suitable for IIoT.© 2020 Elsevier B.V. All rights reserved. Keywords: Identity management | Smart industry | Blockchain | Non-transferability | Biometrics | DLRep | Multi-show unlinkability | Selective disclosure | Accumulators |
مقاله انگلیسی |
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نگاهی به خلاقیت: سوگیری های خلاقیت و تاثیرات متفاوت آنها بر عکس العمل هی مشتری در بازاریابی (نا)همزمان
سال انتشار: 2021 - تعداد صفحات فایل pdf انگلیسی: 17 - تعداد صفحات فایل doc فارسی: 26 چالش بازاریابی محتوی دیجیتالی ایجاد پیام های معنادار در لحظات معنادار است. بدین منظور، برندها اغلب پیام های رسانه اجتماعی را با لحظات موضوعی تنظیم می کنند که بازاریابی همزمان نام دارد. هدف بازاریابی همزمان ایجاد پیوند معنادار و توسعه خلاقیت آمیز در فشار زمانی به خاطر ماهیت همزمان بوده که می تواند تاثیر منفی بر تازگی و نوآوری داشته باشد. این تنش را با بررسی خلاقیت بازاریابی همزمان در اینستاگرام و پیامدهای آن بررسی نمودیم. طبق تحلیل محتوی 516 پیام اینستاگرام، به سوگیری معنادار برای بازاریابی همزمان پرداختیم و معناداری به بهای تازگی و پیشه وری تمامی می شود. به هر حال یافته های تحلیل محتوی و آزمایش مازاد نشان داد فقط پیشه وری و تازگی و نه معناداری تاثیر مثبت بر واکنش مصرف کننده داشتند.
کلمات کلیدی: شبکه های اجتماعی | بازاریابی در زمان واقعی | خلاقیت | سوگیری های خلاقیت | صنعتگری | اصالت | معنی دار بودن |
مقاله ترجمه شده |
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Message personalization and real-time adaptation as next innovations in sport sponsorship management? How run-of-play and team affiliation affect viewer response
شخصی سازی پیام و سازگاری در زمان واقعی به عنوان نوآوری های بعدی در مدیریت حمایت ورزشی؟ نحوه اجرای بازی و وابستگی به تیم چگونه بر پاسخ بینندگان تأثیر می گذارد-2021 The digitization of sports content and technological innovations in sports media offer disruptive new ways to adapt sponsor messages to real-time events during live broadcasts. To date, sponsorship management mostly ignores the run-of-play and viewers’ team affiliation. This paper seeks to demonstrate how a dynamic management approach can contribute to greater sponsor message efficiency. For this purpose, real-time data were collected during live broadcasts of the 2018 soccer World Cup. Arousal was captured using changes in heart rate, attention to sponsor brands was measured via eye tracking, and in-play betting odds were continuously obtained from a sports betting website. Mixed models predict viewer arousal and sponsor brand attention from biometric and betting data. Evidence is provided for how run-of-play and viewer characteristics affect sponsor message communication outcomes. The applicability of the models for distinctive sponsor exposure tactics is demonstrated, and the theoretical and managerial implications are outlined. |
مقاله انگلیسی |
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Comments on biometric-based non-transferable credentials and their application in blockchain-based identity management
نظرات در مورد اعتبارنامه های غیرقابل انتقال مبتنی بر بیومتریک و کاربرد آنها در مدیریت هویت مبتنی بر بلاک چین-2021 In IT-ecosystems, access to unauthorized parties is prevented with credential-based access control techniques (locks, RFID cards, biometrics, etc.). Some of these methods are
ineffective against malicious users who lend their credentials to other users. To obtain
non-transferability, Adams proposed a combination of biometrics encapsulated in Pedersen
commitment with Brands digital credential. However, Adams’ work does not consider the
Zero Knowledge Proof-of Knowledge (ZKPoK) system for Double Discrete Logarithm Representation of the credential. Besides, biometrics is used directly, without employing any
biometric cryptosystem to guarantee biometric privacy, thus Adams’ work cannot be GDP compliant. In this paper, we construct the missing ZKPoK protocol for Adam’s work and
show its inefficiency. To overcome this limitation, we present a new biometric-based nontransferable credential scheme that maintains the efficiency of the underlying Brands credential. Secondly, we show the insecurity of the first biometric-based anonymous credential
scheme designed by Blanton et al.. In this context, we present a brute-force attack against
Blanton’s biometric key generation algorithm implemented for fuzzy vault. Next, we integrate an Oblivious PRF (OPRF) protocol to solve the open problem in Blanton’s work and
improve its efficiency by replacing the underlying signature scheme with PS-signatures. Finally, we evaluate application scenarios for non-transferable digital/anonymous credentials
in the context of Blockchain-based Identity Management (BBIM). We show that our modified constructions preserve biometric privacy and efficiency, and can easily be integrated
into current BBIM systems built upon efficient Brands and PS-credentials. Keywords: Biometrics security | Non-transferability | Digital credentials | Anonymous credentials | Fuzzy vault | Fuzzy extractors | Double discrete logarithm (DDL) | Brands DLRep | Selective disclosure | Blockchain | Identity management |
مقاله انگلیسی |
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Structure Adjustment of Automobile Supply Chain Facing Low-carbon Emission Standard
تنظیم ساختار زنجیره تأمین خودرو با استاندارد انتشار کم کربن-2021 Driven by the EU 2019 low-carbon emission standard for automobile industry, gasoline car brands such as Fiat have considered either to (1) pay penalty or (2) cooperate with E-vehicle brands such as Tesla to “pool” their carbon emissions. These two strategies result in corresponding supply chain structures where the latter has co- operation relationship between automobile brands because the gasoline car brand has to purchase and resell E- vehicles. In this paper, we study under what conditions the gasoline car brand will choose the “Pooling Strategy”, which promotes low-carbon transformation. We show that the gasoline car brand’s profit will always be hurt by the “EU 2019 Standard”, but a sufficiently high excess emission premium can successfully induce the gasoline car brand to choose the “Pooling Strategy”. We then develop a lifetime environmental performance index and find that, interestingly, a tighter carbon emissions standard may result in worse environmental performance. Keywords: Low-carbon transformation | Green supply chain | CO2 pooling arrangement | Environmental performance | Game theory |
مقاله انگلیسی |
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Australias divided accounting profession: The 1969 merger attempt and its legacy
حرفه ای حسابداری استرالیا: تلاش ادغام 1969 و میراث آن-2021 The Australian accounting environment is dominated by two competing brands e Chartered Accountant (CA) and Certified Practising Accountant (CPA) e which signal that the
profession has been unable to achieve full unification. Focussed on 1969, this dual theoryinformed, in-depth study examines the first of four unsuccessful attempts to merge the
two professional accounting associations from which the two brands originate: The
Australian Society of Accountants (the Society) and The Institute of Chartered Accountants
in Australia (the Institute). Primary data from public archives and oral history interviews,
combined with secondary sources, are drawn upon to explain the failure of this proposed
merger and to consider its legacy. The complementary theoretical perspectives of
“boundary-work” and “institutional work” are applied. Amidst other challenges, corporate
collapses during the 1960s precipitated a legitimacy crisis for the profession and raised the
prospect of there being sufficient commonality of purpose to enable a merger. While there
was overwhelming support from Society members, the merger proposal was defeated by a
comprehensive “no” vote from Institute members. This pattern of voting was repeated in
three subsequent merger attempts, leading to the persistence of the curious binary
structure of the Australian accounting profession and associated ongoing differences and
tensions.
keywords: حرفه حسابداری استرالیا | انجمن حسابداران استرالیا | موسسه حسابداران منشور | استرالیا | ادغام انجمن حرفه ای | مرز کار | کار نهادی | Australian accounting profession | Australian Society of Accountants | Institute of Chartered Accountants | Australia | Professional association mergers | Boundary-work | Institutional work |
مقاله انگلیسی |
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Identification and differentiation of commercial and military explosives via high performance liquid chromatography – high resolution mass spectrometry (HPLC-HRMS), X-ray diffractometry (XRD) and X-ray fluorescence spectroscopy (XRF): Towards a forensic substance database on explosives
شناسایی و تمایز مواد منفجره تجاری و نظامی از طریق کروماتوگرافی مایع با کارایی بالا - طیف سنجی جرمی با وضوح بالا (HPLC-HRMS) ، پراش سنجی اشعه ایکس (XRD) و طیف سنجی فلورسانس اشعه ایکس (XRF): به سمت پایگاه داده مواد پزشکی قانونی در مورد مواد منفجره-2020 The identification of confiscated commercial and military explosives is a crucial step not only in the
uncovering of distribution pathways, but it also aids investigating officers in criminal casework. Even
though commercial and military explosives mainly rely on a small number of high-energy compounds, a
great variety of additives and synthesis by-products can be found that can differ depending on the brand,
manufacturer and application. This makes the identification of commercial and military explosives based
on their overall composition a promising approach that can be used to establish a pan-European Forensic
Substance Database on Explosives.
In this work, three analytical techniques were employed to analyze 36 samples of commercial and
military explosives from Germany and Switzerland. An HPLC-HRMS method was developed, using 27
analytes of interest that encompass high-energy compounds, synthesis by-products and additives. HPLCHRMS
and XRD were used to gather and confirm molecular information on each sample and XRF analyses
were carried out to gain insight on the elemental composition. Combining the results from all three
techniques, 41 different additives could be identified as being diagnostic analytes and all samples showed
a unique analytical fingerprint, which allows for a differentiation of the samples. Therefore, this work
presents a set of methods that can be used as a foundation for the creation and population of a database
on explosives that enables the assigning of specific formulations to certain brands, manufacturers and
countries of origin. Keywords: HPLC-HRMS | Powder XRD | XRF | Explosives | Commercial explosives | Military explosives |
مقاله انگلیسی |
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Discrimination of automotive window tint using ATR-FTIR spectroscopy and chemometrics
تبعیض رنگ پنجره اتومبیل با استفاده از طیف سنجی ATR-FTIR و شیمی سنجی-2020 Automotive window tints are commonly applied to motor vehicles to reduce transmittance of light and
heat into the interior. They may hence be encountered as physical evidence in criminal investigations, or
in civil matters where a tint is suspected to originate from a different source than advertised. Establishing
a tint’s provenance would be highly relevant in such cases. However, there are currently a lack of
established guidelines for forensic tint analysis. This study used attenuated total reflectance Fourier
transform infrared (ATR-FTIR) spectroscopy with chemometrics to characterize automotive tints based
on their adhesive composition. Minimal variability was observed within a single roll of tint, however
substantial variability was observed between tints of different brands. Certain individual tint products
were also found to possess highly distinctive spectra. Subsequent predictive models were able to
associate unknown tint samples to their brand, and found to be robust to both adhesive curing and shortterm
environmental exposure over a five-month period. The use of ATR-FTIR spectroscopy and
chemometrics thus offers a rapid and objective approach to discriminating automotive tints for forensic
purposes. Keywords: Polymer | Automotive | Forensic | Chemometrics | Infrared spectroscopy |
مقاله انگلیسی |
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Changing the game to compete: Innovations in the fashion retail industry from the disruptive business model
تغییر بازی برای رقابت: نوآوری در صنعت خرده فروشی مد از مدل کسب و کار مخل-2020 Unprecedented competition and emergent technologies have posed a
challenge to many traditional retailers in recent years. Yet within this competitive
environment, emerging innovative business models have thrived and successfully
disrupted the industry. We analyze the nature of disruptive business-model innovations and the ways they disrupt the fashion retail industry. To that end, we examine
three disruptors in the industry: born-digital brands, AI-enabled demand forecasting and product design, and collaborative consumption. After introducing the
concept of disruptive business-model innovation, we discuss the three disruptors’
effects on the fashion industry. We find that all of these models keenly answer
fundamental needs unmet by current business models, such as offering quality
products at a competitive price, curated services, and sustainable consumption.
At the same time, all three disruptors suggest effective operation models for
handling demand uncertainty, inventory management, and timely responses to
the market, all of which are inherent issues for current push supply chains and
forecast-based, inventory-driven systems. Based on this analysis, we discuss important implications for both academics and industry practitioners.
KEYWORDS: Disruptive innovation | Business model | Inventory management | Demand forecasting | Fashion industry | Online retail |
مقاله انگلیسی |
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Impact factors of the real-world fuel consumption rate of light duty vehicles in China
عوامل مؤثر بر میزان مصرف سوخت در دنیای واقعی از وسایل نقلیه سبک وزن در چین-2020 Measuring real-world fuel consumption of light duty vehicles can be challenging due to the limited
collection of actual data. In this paper, we use big data retrieved from the record of real-world fuel
consumptions of different brands of vehicles in different areas (n ¼ 106,809 samples from 201 brands of
vehicles and 34 cities) in China to build up a real-world fuel consumption rate (RFCR) model to estimate
the fuel consumption given the driving conditions and figure out the main factors that affect actual fuel
consumption in the real world.We find the average deviation of actual fuel consumptions and the fitting
results of RFCR model is 4.22% , which does not significantly differ from zero, and the fuel consumptions
calculated by RFCR model tend to be 1.40 L/100 km (about 25%) higher than the official reported data.
Furthermore, we find that annual average temperature and altitude factors significantly influence the
fuel consumption rate. The results indicate that there is a real world performance discrepancy between
the theoretical fuel consumption released by authorities and that in the real world, and some green
behaviors (choose light duty vehicles, reduce the use of air conditioning and change to manual transmission
type) can reduce energy consumption of vehicles. Keywords: Real-world fuel consumption rate | Energy consumption | Private passenger vehicles | Big data | China |
مقاله انگلیسی |