scholarly journals A Quantitative Method for the DNS Isolation Management Risk Estimation

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 922
Author(s):  
SiYu Liang ◽  
ZhiHong Tian ◽  
XinDa Cheng ◽  
Yu Jiang ◽  
Le Wang ◽  
...  
Keyword(s):  
Communication Systems ◽  
Quantitative Method ◽  
Risk Estimation ◽  
The Internet ◽  
Domain Name ◽  
National Network ◽  
Isolation Management ◽  
The Usa ◽  
The Difference ◽  
Almost All

The domain name system (DNS) is an important infrastructure of the Internet, providing domain name resolution services for almost all Internet communication systems. However, the current DNS is centrally managed, leading to unfair sovereignty of the Internet among countries. A domestic DNS is unable to work normally, noted as isolated management risk (IMR), especially when the national network is isolated from the rest of the Internet. To improve understanding of the DNS isolated management risk for better DNS resource deployment, it is critical to determine how serious the IMR is among various countries. In order to quantify DNS isolated management risk, this paper proposed an effective approach to collect DNS resolution demand data from the network used by various intelligent devices and to conduct data analysis to estimate isolated management risk of certain country’s domestic DNSs. Our idea is to quantify the domain name resolution demand and its relationship with the overseas resolution processes. We further used our quantitative method to compare the IMR of the USA and China and analyzed the difference between them.

scholarly journals Perancangan Sistem Informasi Pendaftaran Siswa Baru di SMK YASTRIF 1 Parung Panjang Berbasis Web

2020 ◽  
Vol 3 (4) ◽  
pp. 231
Author(s):  
Ismi Ismi ◽  
Ratna Willis ◽  
Siti Soliah ◽  
Iyus Tiawati ◽  
Yulianti Yulianti
Keyword(s):  
Programming Language ◽  
School Children ◽  
The Internet ◽  
Online Media ◽  
Prospective Students ◽  
New Developments ◽  
New Students ◽  
The Difference ◽  
Almost All ◽  
House Parents

In this millennial era, the development of technology has really sped up the difference compared to the previous era. Every day, even at the clock, there are always new developments in technology. Invarious fields, everything wants to be practical and fast, all of that cannot be separated from new discoveries from technology plus millennials who want everything instant and fast. People nowadays are almost all technology literate, one of which is the internet. Just by sitting pretty and connected to the internet, everything can be done without having to leave the house. Parents and school children don't have to bother queuing just to register for school, just open the internet, everything can be done at any time. This study aims to make it easier for new students who are millennials by building online media, namely websites using the HTML programming language, MySQL database. Prospective students only need to be connected to the internet and can register for schools and be more efficient.

scholarly journals Some Macroeconomic Consequences of COVID-19: Specifics of the 2020 World Economic Crisis

2021 ◽  
Vol 13 (1) ◽  
pp. 9-27
Author(s):  
Valery V. Kizilov ◽  
Keyword(s):  
German Economy ◽  
Developed Countries ◽  
Demand And Supply ◽  
Starting Point ◽  
The Usa ◽  
World Economic ◽  
Policy Measures ◽  
The Difference ◽  
Trade Dynamics ◽  
Almost All

In 2020, almost all large countries experienced a decline in GDP and other indicators of economic activity. This trend followed the news about the COVID-19 pandemic and had several features typical for cyclical economic crises. At the starting point, both demand and supply factors were negatively affected. This paper looks into data on GDP, retail sales and foreign trade dynamics in the first nine months of 2020, and analyzes the difference between developed and developing countries. Specific phenomena are observed: Germany and its small neighbors had relatively mild crises; developed countries had their trade balances deteriorating; the trade between the USA and China revived; and American deficit has been growing since April 2020. Some hypotheses to explain the above are offered. For instance, the German economy might have been able to adapt swiftly due to greater freedom of entrepreneurship than in France and Italy and due to the lowest debt ratios among G7 countries. The trade balances of developed countries deteriorated, possibly, because of a decline in production as a result of antiCOVID lockdowns, with consumption encouraged by stimulating policy measures.

Retail Mix Dan Kepuasan Konsumen Minimarket

Liquidity ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 53-62
Author(s):  
Siti Maryama ◽  
Yayat Sujatna
Keyword(s):  
Consumer Satisfaction ◽  
Quantitative Method ◽  
Descriptive Analysis ◽  
T Test ◽  
Primary Data ◽  
Retail Industry ◽  
Location Data ◽  
Store Design ◽  
Customer Services ◽  
The Difference

The purpose of this study is to (1) analyzing the level of retail mix consumer satisfaction; (2) analyze the dominant variable in retail mix consumer satisfaction; (3) analyze the difference of retail mix consumer satisfaction performed. The observed of the retail industry is Alfamidi and Indomaret. The study was designed into a descriptive-quantitative method. The source of primary data obtained from the questionnaire of 100 respondents. The formulating variable of retail mix includes: merchandise assortments, pricing, customer services Store design and display, communication mix, and location. Data analyze by using descriptive, analysis of factors, and t-test. The result confirmed that the level of retail mix consumer satisfaction in both industry is relatively similar. However, it can be stated that the respondents were more satisfied to Indomaret compared with Alfamart.

Analisis Karakterisasi Teknologi Direct Sequence Spread Spectrum Dan Frequency Hopping Spread Spectrum

2019 ◽  
Vol 2 (2) ◽  
pp. 129-138
Author(s):  
Fawzan Galib Abdul Karim Bawahab ◽  
Elvan Yuniarti ◽  
Edi Kurniawan
Keyword(s):  
Spread Spectrum ◽  
Communication Systems ◽  
Multiple Access ◽  
Frequency Hopping ◽  
Direct Sequence Spread Spectrum ◽  
Direct Sequence ◽  
Frequency Hopping Spread Spectrum ◽  
Two Systems ◽  
The Difference

Abstrak. Pada penelitian ini, telah dilakukan analisa karakterisasi pada teknologi Direct Sequence Spread Spectrum dan Frequency Hopping Spread Spectrum, sebagai salah satu teknik multiple-access pada sistem komunikasi. Karakterisasi dilakukan untuk mencari bagaimana cara meningkatkan keoptimalan kedua sistem tersebut, dalam mengatasi masalah interferensi dengan sistem dan channel yang sama. Dan juga untuk menentukan veriabel apa yang mempengaruhi keoptimalan kedua sistem tersebut. Karakterisasi dilakukan dengan menentukan variabel-variabel yang mempengaruhi keoptimalan keduanya. Hasil dari karakterisasi, diketahui variabel-variabel yang mempengaruhi kemampuan sistem DSSS yaitu nilai frekuensi spreading (). Sedangkan untuk sistem FHSS yaitu nilai frekuensi spreading ( dan ) dan selisih antara frekuensi hopping data dengan frekuensi hopping interferensi . Kata Kunci: BER, DSSS, FHSS, Interference, Spread spectrum. Abstract. In this study, characterization of Direct Sequence Spread Spectrum and Frequency Hopping Spread Spectrum technologies have been done, as one of the multiple-access techniques in communication systems. Characterization is done to find out how to improve the ability of the two systems, in solving interference problems with the same system and channel. And also to determine what veriabel affects the ability of the two systems. Characterization is done by determining the variables that affect the ability of both. The results of the characterization, known variables that affect the ability of the DSSS system are the spreading frequency value (). As for the FHSS system, the spreading frequency value ( and ) and the difference between frequency hopping data with frequency hopping interference .

USABILITY INTERNET-PHARMACIES SITES

2020 ◽  
pp. 10-14
Author(s):  
Chudnov A.A. ◽  
Umarov S.Z.
Keyword(s):  
Prescription Drugs ◽  
Storage Conditions ◽  
Ease Of Use ◽  
The Internet ◽  
Electronic Prescription ◽  
Anal Ysis ◽  
Modern Development ◽  
Provision Of Services ◽  
The Usa ◽  
Internet Pharmacies

The modern development of information technology provides the opportunity to use them in many areas of life, which also include medicine and pharmacy. The introduction of technologies such as an electronic prescription system, drug labeling, creates the prereq-uisites for the remote provision of services. Recently, legislative changes have legalized the distance trad-ing of OTC drugs. In this regard, soon the supply chain of the drug to the end user may include a mini-mum number of professionals. Thus, in these condi-tions, the role of information that users can receive via the Internet is significantly increasing. Such a term as the "usability" of the site, or its ease of use, appeared back in 1998 and every year is of increasing importance. In relation to online pharmacies, the usa-bility assessment is especially relevant in terms of both general functionality, which is typical for all services selling products via the Internet, and features specific to Internet pharmacies only. On May 8, 2020, an anal-ysis of the "usability" of 20 sites of pharmacy organi-zations was conducted. Some advantages were high-lighted (putting information on the quality of goods (declarations, certificates), warnings, contraindica-tions and storage conditions in a separate block), as well as disadvantages (some clutter of the site with elements, the presence of blank pages and a fuzzy warning about prescription drugs).

Convergence in norming and control of modern wireless technologies electromagnetic fields

2020 ◽  
Vol 60 (9) ◽  
pp. 610-613
Author(s):  
Michail Yu. Maslov ◽  
Yuri M. Spodobaev
Keyword(s):  
Wireless Communication ◽  
Electromagnetic Fields ◽  
Communication Systems ◽  
Communication Technologies ◽  
Telecommunications Industry ◽  
High Tech ◽  
Wireless Technologies ◽  
Almost All ◽  
Network Technologies ◽  
And Control

Telecommunications industry evolution shows the highest rates of transition to high-tech systems and is accompanied by a trend of deep mutual penetration of technologies - convergence. The dominant telecommunication technologies have become wireless communication systems. The widespread use of modern wireless technologies has led to the saturation of the environment with technological electromagnetic fields and the actualization of the problems of protecting the population from them. This fundamental restructuring has led to a uniform dense placement of radiating fragments of network technologies in the mudflow areas. The changed parameters of the emitted fields became the reason for the revision of the regulatory and methodological support of electromagnetic safety. A fragmented structural, functional and parametric analysis of the problem of protecting the population from the technological fields of network technologies revealed uncertainty in the interpretation of real situations, vulnerability, weakness and groundlessness of the methodological basis of sanitary-hygienic approaches. It is shown that this applies to all stages of the electromagnetic examination of the emitting fragments of network technologies. Distrust arises on the part of specialists and the population in not only the system of sanitary-hygienic control, but also the safety of modern network technologies is being called into question. Growing social tensions and radio phobia are everywhere accompanying the development of wireless communication technologies. The basis for solving almost all problems of protecting the population can be the transfer of subjective methods and means of monitoring and sanitary-hygienic control of electromagnetic fields into the field of IT.

scholarly journals A “Smart” Biosensor-Enabled Intravascular Catheter and Platform for Dynamic Delivery of Propofol to “Close the Loop” for Total Intravenous Anesthesia

2021 ◽  
Vol 186 (Supplement_1) ◽  
pp. 370-377
Author(s):  
Edward Chaum ◽  
Ernő Lindner
Keyword(s):  
Real Time ◽  
Drug Distribution ◽  
Population Based ◽  
Pharmacokinetic Data ◽  
Drug Infusion ◽  
Blood Concentrations ◽  
The Usa ◽  
The Difference ◽  
Automated Delivery

ABSTRACT Background Target-controlled infusion anesthesia is used worldwide to provide user-defined, stable, blood concentrations of propofol for sedation and anesthesia. The drug infusion is controlled by a microprocessor that uses population-based pharmacokinetic data and patient biometrics to estimate the required infusion rate to replace losses from the blood compartment due to drug distribution and metabolism. The objective of the research was to develop and validate a method to detect and quantify propofol levels in the blood, to improve the safety of propofol use, and to demonstrate a pathway for regulatory approval for its use in the USA. Methods We conceptualized and prototyped a novel “smart” biosensor-enabled intravenous catheter capable of quantifying propofol at physiologic levels in the blood, in real time. The clinical embodiment of the platform is comprised of a “smart” biosensor-enabled catheter prototype, a signal generation/detection readout display, and a driving electronics software. The biosensor was validated in vitro using a variety of electrochemical methods in both static and flow systems with biofluids, including blood. Results We present data demonstrating the experimental detection and quantification of propofol at sub-micromolar concentrations using this biosensor and method. Detection of the drug is rapid and stable with negligible biofouling due to the sensor coating. It shows a linear correlation with mass spectroscopy methods. An intuitive graphical user interface was developed to: (1) detect and quantify the propofol sensor signal, (2) determine the difference between targeted and actual propofol concentration, (3) communicate the variance in real time, and (4) use the output of the controller to drive drug delivery from an in-line syringe pump. The automated delivery and maintenance of propofol levels was demonstrated in a modeled benchtop “patient” applying the known pharmacokinetics of the drug using published algorithms. Conclusions We present a proof-of-concept and in vitro validation of accurate electrochemical quantification of propofol directly from the blood and the design and prototyping of a “smart,” indwelling, biosensor-enabled catheter and demonstrate feedback hardware and software architecture permitting accurate measurement of propofol in blood in real time. The controller platform is shown to permit autonomous, “closed-loop” delivery of the drug and maintenance of user-defined propofol levels in a dynamic flow model.

scholarly journals Online rental housing market representation and the digital reproduction of urban inequality

2019 ◽  
Vol 52 (2) ◽  
pp. 449-468 ◽  
Author(s):  
Geoff Boeing
Keyword(s):  
Housing Market ◽  
Smart Cities ◽  
Rental Housing ◽  
Search Costs ◽  
Poverty Rate ◽  
The Internet ◽  
Urban Inequality ◽  
The Usa ◽  
Housing Search ◽  
Rental Housing Market

As the rental housing market moves online, the internet offers divergent possible futures: either the promise of more-equal access to information for previously marginalized homeseekers, or a reproduction of longstanding information inequalities. Biases in online listings’ representativeness could impact different communities’ access to housing search information, reinforcing traditional information segregation patterns through a digital divide. They could also circumscribe housing practitioners’ and researchers’ ability to draw broad market insights from listings to understand rental supply and affordability. This study examines millions of Craigslist rental listings across the USA and finds that they spatially concentrate and overrepresent whiter, wealthier, and better-educated communities. Other significant demographic differences exist in age, language, college enrollment, rent, poverty rate, and household size. Most cities’ online housing markets are digitally segregated by race and class, and we discuss various implications for residential mobility, community legibility, gentrification, housing voucher utilization, and automated monitoring and analytics in the smart cities paradigm. While Craigslist contains valuable crowdsourced data to better understand affordability and available rental supply in real time, it does not evenly represent all market segments. The internet promises information democratization, and online listings can reduce housing search costs and increase choice sets. However, technology access/preferences and information channel segregation can concentrate such information-broadcasting benefits in already-advantaged communities, reproducing traditional inequalities and reinforcing residential sorting and segregation dynamics. Technology platforms like Craigslist construct new institutions with the power to shape spatial economies, human interactions, and planners’ ability to monitor and respond to urban challenges.

Effect of Flaw Dimensions on Ductile Fracture Behavior of Non-Aligned Multiple Flaws in a Plate

2011 ◽  
Author(s):  
Katsumasa Miyazaki ◽  
Kunio Hasegawa ◽  
Koichi Saito
Keyword(s):  
Ductile Fracture ◽  
Flat Plate ◽  
Fracture Behavior ◽  
Maximum Load ◽  
Surface Flaws ◽  
Fracture Tests ◽  
The Difference ◽  
Almost All ◽  
Maximum Minimum

The fitness-for-service codes require the characterization of non-aligned multiple flaws for flaw evaluation, which is performed using a flaw proximity rule. Worldwide, almost all such codes provide their own proximity rule, often with unclear technical bases of the application of proximity rule to ductile or fully plastic fracture. In particular, the effect of flaw dimensions of multiple surface flaws on fully plastic fracture of non-aligned multiple flaws had not been clear. To clarify the effect of the difference of part through-wall and through-wall flaws on the behavior of fully plastic fracture, the fracture tests of flat plate specimens with non-aligned multiple part through-wall flaws were conducted. When the flaw depth a was shallow with 0.4 in ratio of a to thickness t, the maximum load Pmax occurred at penetration of multiple flaws and the effect of vertical distance of non-aligned multiple flaws H on Pmax was not so significant. However, when flaw depth was deep with 0.8 in a/t, Pmax occurred after penetration of flaws and the effect of H on Pmax could be seen clearly. It was judged that the through-wall flaw tests were appropriate for discussion of the effect of H on Pmax and the alignment rule of multiple flaws. In addition, in order to clarify the appropriate length parameter to estimate Pmax of test specimens with dissimilar non-aligned through-wall multiple flaws, the fracture tests of plate specimens were also conducted. The effect of different flaw length on Pmax was discussed with maximum, minimum and averages of dissimilar non-aligned multiple flaw lengths. Experimental results showed that the maximum length lmax would be an appropriate length parameter to estimate Pmax, when the non-aligned multiple through-wall flaws were dissimilar.

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