scholarly journals Tis-Bad: A Time Series-Based Deobfuscation Algorithm

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
A Labrador ◽  
P. Wightman ◽  
A Santander ◽  
D Jabba ◽  
M. Jimeno
Keyword(s):  
Time Series ◽  
Location Privacy ◽  
Service Providers ◽  
Moving Average ◽  
Point Of View ◽  
Location Based Services ◽  
Location Obfuscation ◽  
Definition Of ◽  
Weighted Moving Average

Location-Based Services (LBSs) have  brought along many benefitsto users and service providers in terms of improved quality of existing services and a better user  experience. At the same time, location privacy has become one of the most critical concerns from the users’ point of view. One of  the existing techniques to protect the users’ location is through Location Obfuscation, which consists of  altering the location of the user while still allowing the provider to provide the requested service. Due to the simplicity of some techniques  of  this  kind, they may not offer enough protection against deobfuscation attacks (try to infer the original information from the obfuscated one), but there have not been much work on performance evaluation of them. This work presents a formal definition of a deobfuscation technique for noise-based obfuscation algorithms called TIS-BAD (Time Series - Based Deobfuscation) which implements an exponentially weighted moving average over the obfuscated data to filter the induced noise. In the literature there have been very few efforts to present such formal deobfuscation techniques, being this is one of the main contributions of this work. We evaluate the TIS-BAD algorithm against the Rand and N-Rand obfuscation algorithms, including both location and time scrambling, for straight and non-straight routes. The results show that the TIS-BAD algorithm can filter from 47% to 60% of the induced noise by the obfuscation algorithms, reducing considerably the protection on the users’ location information.

scholarly journals Privacy vs. Reward in Indoor Location-Based Services

2016 ◽  
Vol 2016 (4) ◽  
pp. 102-122 ◽  
Author(s):  
Kassem Fawaz ◽  
Kyu-Han Kim ◽  
Kang G. Shin
Keyword(s):  
Location Privacy ◽  
Indoor Localization ◽  
Service Providers ◽  
Location Based Services ◽  
Location Information ◽  
Privacy Concerns ◽  
Indoor Location ◽  
Location Data ◽  
Personalized Services ◽  
Privacy Risks

AbstractWith the advance of indoor localization technology, indoor location-based services (ILBS) are gaining popularity. They, however, accompany privacy concerns. ILBS providers track the users’ mobility to learn more about their behavior, and then provide them with improved and personalized services. Our survey of 200 individuals highlighted their concerns about this tracking for potential leakage of their personal/private traits, but also showed their willingness to accept reduced tracking for improved service. In this paper, we propose PR-LBS (Privacy vs. Reward for Location-Based Service), a system that addresses these seemingly conflicting requirements by balancing the users’ privacy concerns and the benefits of sharing location information in indoor location tracking environments. PR-LBS relies on a novel location-privacy criterion to quantify the privacy risks pertaining to sharing indoor location information. It also employs a repeated play model to ensure that the received service is proportionate to the privacy risk. We implement and evaluate PR-LBS extensively with various real-world user mobility traces. Results show that PR-LBS has low overhead, protects the users’ privacy, and makes a good tradeoff between the quality of service for the users and the utility of shared location data for service providers.

scholarly journals A RED modified weighted moving average for soft real-time application

2014 ◽  
Vol 24 (3) ◽  
pp. 697-707 ◽  
Author(s):  
Joanna Domanśka ◽  
Adam Domański ◽  
Dariusz R. Augustyn ◽  
Jerzy Klamka
Keyword(s):  
Real Time ◽  
Optimization Problem ◽  
Optimality Criterion ◽  
Task Force ◽  
Moving Average ◽  
Timing Constraints ◽  
Real Time Traffic ◽  
Real Time Application ◽  
Weighted Moving Average

Abstract The popularity of TCP/IP has resulted in an increase in usage of best-effort networks for real-time communication. Much effort has been spent to ensure quality of service for soft real-time traffic over IP networks. The Internet Engineering Task Force has proposed some architecture components, such as Active Queue Management (AQM). The paper investigates the influence of the weighted moving average on packet waiting time reduction for an AQM mechanism: the RED algorithm. The proposed method for computing the average queue length is based on a difference equation (a recursive equation). Depending on a particular optimality criterion, proper parameters of the modified weighted moving average function can be chosen. This change will allow reducing the number of violations of timing constraints and better use of this mechanism for soft real-time transmissions. The optimization problem is solved through simulations performed in OMNeT++ and later verified experimentally on a Linux implementation

Modeling Time Series for Prediction of Thalassemia in Nineveh Governorate

2021 ◽  
Vol 2 (3) ◽  
pp. 120-131
Author(s):  
Shaymaa Riyadh Thanoon
Keyword(s):  
Time Series ◽  
Moving Average ◽  
Monthly Data ◽  
Number Of Patients ◽  
Auto Regressive

The aim of this research is to analyze the time series of Thalassemia cancer cases by making assumptions on the number of cases to formulate the problem to find the best model for predicting the number of patients in Nineveh governorate using (Box and Jenkins) method of analysis based on the monthly data provided by Al Salam Hospital in Nineveh for the period (2014-2018). The results of the analysis showed that the appropriate model of analysis is the Auto-Regressive Integrated Moving Average (ARIMA) (2,1,0) and based on this model the number of people with this disease was predicted for the next two years where the results showed values ​​consistent with the original values which indicates the good quality of the model.

scholarly journals Complying with Privacy Legislation: From Legal Text to Implementation of Privacy-Aware Location-Based Services

2018 ◽  
Vol 7 (11) ◽  
pp. 442 ◽  
Author(s):  
Mehrnaz Ataei ◽  
Auriol Degbelo ◽  
Christian Kray ◽  
Vitor Santos
Keyword(s):  
Data Privacy ◽  
Location Privacy ◽  
Service Providers ◽  
Location Based Services ◽  
Legal Text ◽  
General Data Protection Regulation ◽  
Location Data ◽  
Privacy Laws ◽  
Technical Issues ◽  
General Data

An individual’s location data is very sensitive geoinformation. While its disclosure is necessary, e.g., to provide location-based services (LBS), it also facilitates deep insights into the lives of LBS users as well as various attacks on these users. Location privacy threats can be mitigated through privacy regulations such as the General Data Protection Regulation (GDPR), which was introduced recently and harmonises data privacy laws across Europe. While the GDPR is meant to protect users’ privacy, the main problem is that it does not provide explicit guidelines for designers and developers about how to build systems that comply with it. In order to bridge this gap, we systematically analysed the legal text, carried out expert interviews, and ran a nine-week-long take-home study with four developers. We particularly focused on user-facing issues, as these have received little attention compared to technical issues. Our main contributions are a list of aspects from the legal text of the GDPR that can be tackled at the user interface level and a set of guidelines on how to realise this. Our results can help service providers, designers and developers of applications dealing with location information from human users to comply with the GDPR.

scholarly journals PROFESSIONAL COMPETENCE OF FUTURE SPECIALISTS IN INFORMATION AND COMMUNICATION TECHNOLOGIES: QR CODING IN STUDENT LEARNING

2019 ◽  
Vol 5 (57) ◽  
pp. 33-35
Author(s):  
A. Hafiiak ◽  
O. Shefer ◽  
E. Borodina ◽  
S. Alyoshin
Keyword(s):  
Information And Communication Technologies ◽  
Professional Competence ◽  
Communication Technologies ◽  
Point Of View ◽  
Quality Level ◽  
It Education ◽  
Information And Communication ◽  
Student Training ◽  
Definition Of

The article explores modern information and telecommunication technologies, which are the basis of information processes in education. The fundamentals of improving the quality of student training from the point of view of the development of a vocational education system are investigated. The authors explore the definition of an innovative educational environment. It is proved that professional IT education is the basis for improving its quality level and has certain advantages over other types of knowledge, providing flexibility due to modern technological features, including the use of QR coding information.

scholarly journals The Control Process Effectiveness: Organization Versus Customer

2013 ◽  
Vol 11 (8) ◽  
pp. 345
Author(s):  
Ofer Barkai
Keyword(s):  
Quality Of Service ◽  
Customer Service ◽  
Internal Control ◽  
Service Providers ◽  
Control Process ◽  
Point Of View ◽  
Large Organization ◽  
Control Processes ◽  
Telecommunication Company

This research project, which was implemented in an organization whose primary function is providing service (Telecommunication company), studies the scope of the correlation between the quality of service from the customers point of view (customer survey) and the organization (Telecommunication company systems). The research is important both for economic and scientific reasons. It involves many organizational control units which require significant monetary investments. From a scientific point of view, the research is important because it can shed light on the asymmetrical point of view existing between customers and organizations. Organizations that are service providers place high importance on the quality of service and their image as perceived by their customers. Quality of service is measured through internal control processes and from there is passed on to the staff who are directly involved in customer service. In this study, we focus on a large organization which implements control processes and then provides service to customers. Therefore, the activities of this organization are judged first and foremost on the basis of the service quality provided. The existing internal control processes of the organization, which measure the standard of service provided on the basis of organizational benchmarks are separate from those that measure customer satisfaction. In this project, we analyze the correlation between the outlook of the customer and the results of internal control processes.

scholarly journals USULAN PERMINTAAN PRODUK SN 5 ML DI PT. XYZ DENGAN METODE TIME SERIES

2021 ◽  
Vol 8 (2) ◽  
pp. 117-122
Author(s):  
Sambas Sundana ◽  
Destri Zahra Al Gufronny
Keyword(s):  
Time Series ◽  
Moving Average ◽  
Exponential Smoothing ◽  
Double Exponential ◽  
Double Exponential Smoothing ◽  
Single Exponential ◽  
Weighted Moving Average

Permasalahan yang dihadapi PT. XYZ yaitu kesulitan dalam menentukan jumlah permintaan produk yang harus tersedia untuk periode berikutnya agar tetap dapat memenuhi kebutuhan pelanggan dan tidak menyebabkan penumpukan barang dalam jangka waktu yang lama terutama produk SN 5 ML yang memiliki permintaan jumlah paling besar dari produk lainnya. Tujuan dari penelitian ini yaitu menentukan metode peramalan yang tepat untuk meramalkan jumlah permintaan produk SN 5 ml periode Januari sampai dengan Desember 2021 Metode yang digunakan dalam penelitian ini yaitu metode peramalan Moving Average (MA), Weighted Moving Average (WMA), Single Exponential Smoothing (SES), dan Double Exponential Smoothing (DES). Adapun langkah langkah peramalan yang dilakukan yaitu menentukan tujuan peramalan,memilih unsur apa yang akan diramal, menentukan horizon waktu peramalan (pendek, menengah, atau panjang), memilih tipe model peramalan, mengumpulkan data yang di perlukan untuk melakukan peramalan, memvalidasi dan menerapkan hasil peramalan Berdasarkan perhitungan didapat metode peramalan dengan persentase tingkat kesalahan terkecil dibandingkan dengan metode lainnya yaitu  metode Moving Average (MA) dengan hasil yang diperoleh permintaan produk SN 5 ML pada bulan Januari sampai dengan Desember 2021 yaitu sebanyak 22.844.583 unit

SUSTAINABLE DEVELOPMENT AND QUALITY OF LIFE IN LITHUANIA COMPARED TO OTHER COUNTRIES

2012 ◽  
Vol 18 (4) ◽  
pp. 588-607 ◽  
Author(s):  
Dalia Štreimikienė ◽  
Neringa Barakauskaitė-Jakubauskienė
Keyword(s):  
Quality Of Life ◽  
Sustainable Development ◽  
Positive Impact ◽  
Life Quality ◽  
Point Of View ◽  
Infrastructure Development ◽  
New Approach ◽  
Definition Of ◽  
Objective Indicators

The paper presents the definition of quality of life and its relationship with sustainable development. The paper analyses and compares the indicators of quality of life in Lithuania with other countries. A quality of life is an explicit or implicit policy goal. Various measurements and indicators to evaluate a quality of life were proposed during the recent years however there are no widely accepted objective indicators of quality of life able to compare countries. Sustainable development concept proposes new approach to measure quality of life. Therefore the aim of sustainable development is to increase quality of life. Quality of life can be addressed in terms of people health, the state of economy, employment, infrastructure development, crime and environment. All these indicators are interrelated as economic development creates preconditions to maintain public health, develop social and technical infrastructure, to increase employment, to ensure quality of environment, to tackle with crime etc. From the other point of view healthy and satisfied with the quality of life nation have positive impact on stable economic growth.

The quality of institutions: Problems of definition and evaluation

2021 ◽  
pp. 49-67
Author(s):  
V. L. Tambovtsev
Keyword(s):  
Final Section ◽  
Point Of View ◽  
Quality Of Institutions ◽  
Definition Of

The article is devoted to the analysis of modern ideas about the quality of institutions concept, and the development on this basis of its generalized and operational understanding. The interpretation of the quality of the institution as its legitimacy from the point of view of stakeholders of the institution’s performance is grounded. Starting from the understanding of the object or process legitimacy as a recognition of its right to exist, an approximate question is proposed for conducting sociological surveys to assess the quality of institutions. In the final section of the article, the evolutionary definition of the concept of quality is proposed, and it is shown that the identification of the institutions quality with their legitimacy is fully consistent with this definition.

Loyalty Programme and Meta-Services

2017 ◽  
Vol 9 (1) ◽  
pp. 35-56 ◽  
Author(s):  
Pierre-Yves Léo ◽  
Vikrant Janawade ◽  
Jean Philippe
Keyword(s):  
Structural Equation ◽  
Service Providers ◽  
Equation Model ◽  
Point Of View ◽  
Global Evaluation ◽  
Main Hypothesis ◽  
Airline Alliances ◽  
Airline Alliance ◽  
Loyalty Programme

This research focuses on the customers' perception of loyalty programme offered by networked service providers such as airline alliances. The authors call such services meta-services. Their main hypothesis is that after experiencing meta-services delivered by meta-service providers, consumers synthesise a part of their perceptions in terms of the perceived benefits of the loyalty programme. This assessment will influence the perceived value, satisfaction, and at last behavioural intentions. The authors' point of view is to highlight the determinants of this assessment, including the quality of the proposed services and rewards. A quantitative survey was conducted in an airline alliance context. A structural equation model is tested in order to verify if the hypotheses are acceptable. It also shows how passengers build their global evaluation of a frequent flyer program and how far it influences their future behaviour towards the alliance members.

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