Study of Contact Detect Response for PMR and HAMR Media Using the Integrated Thermistor Based Proximity Sensor

2020 ◽  
Author(s):  
M. D. Murthy Peri ◽  
James Kiely ◽  
Manuel C. Anaya-Dufresne ◽  
Kent Bodurtha
Keyword(s):  
Thermal Conductance ◽  
Disk Drive ◽  
Detection Methods ◽  
Contact Detection ◽  
Media Type ◽  
Interface Heat Transfer ◽  
Media Types ◽  
Frequency Changes ◽  
The Impact ◽  
Thermistor Resistance

Abstract As the Hard Disk Drive industry migrates from PMR to HAMR technology, it is important to understand differences in the measurement of contact detection between PMR vs. HAMR media. Compared to PMR media, HAMR media tends to be rougher and has a higher thermal conductance. Since some contact detection methods rely on interface heat transfer, it is important to understand the impact of media type on measurements. In the current paper, we present results from mechanical spinstand studies using the integrated thermistor in the head. The heater in the head is dithered at a fixed frequency and the thermistor response is analyzed at that frequency. Changes in the thermistor resistance as a function of head-media clearance are used to understand how thermal conduction differences between PMR vs. HAMR media may impact contact detection. We find that heat conduction is different between HAMR and PMR media types and can have an impact on contact detection.

Computational and Experimental Investigation of Contact Detect Response of a Head-Integrated Thermistor on HAMR vs. PMR Media

2021 ◽  
Author(s):  
Manuel C. Anaya-Dufresne ◽  
Yixuan Li ◽  
M. D. Murthy Peri ◽  
James Kiely ◽  
Michael T. Johnson ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Contact Detection ◽  
Electric Resistance ◽  
Model Calculations ◽  
Media Type ◽  
Modeling Techniques ◽  
The Media ◽  
The Impact ◽  
Disc Drive ◽  
Thermistor Resistance

Abstract The migration from perpendicular magnetic recording (PMR) to heat-assisted magnetic recording (HAMR) in the hard disc drive (HDD) industry brings unique challenges for head-disc contact detection (CD) and with precisely setting head-disc clearance. In this study we provide numerical model calculations of a head-integrated thermistor’s electric resistance as a function of head-disc clearance and compare the modeled results with measurements of thermistor resistance for heads flying over PMR and HAMR media. Such comparisons serve to assess the accuracy of the modeling techniques and to understand the impact that the media type plays in CD capability of the head-integrated thermistor.

Impact of Country of Origin on Brand Placement Efficacy: An Experimental Investigation in Emerging Economies

2019 ◽  
Author(s):  
Murtaza Hassan Itoo ◽  
Koma Nagar ◽  
Raouf Ahmad Rather
Keyword(s):  
Country Of Origin ◽  
Reality Tv ◽  
Theory And Practice ◽  
Brand Placement ◽  
Managerial Practices ◽  
Media Type ◽  
Media Types ◽  
Tv Shows ◽  
The Impact ◽  
Full Factorial

The present research has been an endeavour to study the impact of the Country of Origin (COO) of brand on brand placement effectiveness in different media types in India. The study investigates experimentally how the COO (Domestic/Foreign) of the placed brand in two different media types (Bollywood movies and reality TV shows) influence brand placement efficacy in an emerging economy like India. We propose that the COO andMedia Type play a significant role in brand placement efficacy. The hypotheses were tested via a 2 × 2 full factorial MANOVA with COO (Domestic/Foreign) and media type (Bollywood movies/Reality TV shows) as the independent variables. The results confirm that brand placement efficacy does not differ with regard to the COO of placed brand. However, Media Type does influence brand placement efficacy. Our paper bridges the gap between theory and practice by suggesting improvement in brand placement in non – traditional mass media like Bollywood movies and reality TV shows. Implications concerning both research and managerial practices are offered and are encouraging for brand managers.

scholarly journals Can Communication Strategies Combat COVID-19 Vaccine Hesitancy with Trade-Off between Public Service Messages and Public Skepticism? Experimental Evidence from Pakistan

Vaccines ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 757
Author(s):  
Qiang Jin ◽  
Syed Hassan Raza ◽  
Muhammad Yousaf ◽  
Umer Zaman ◽  
Jenny Marisa Lim Dao Siang
Keyword(s):  
Public Service ◽  
Communication Strategies ◽  
Health And Safety ◽  
Communication Strategy ◽  
World Health ◽  
Vaccine Hesitancy ◽  
Media Type ◽  
Downward Spiral ◽  
Media Types ◽  
Health Organization

The COVID-19 pandemic may have reached a turning point as the World Health Organization and the global community of nations step up plans for mass vaccination campaigns. However, the COVID-19 vaccine-related conspiracy theories (e.g., falsehoods about birth control, women infertility, surveillance, and microchip humanity, etc.) have built new momentum for vaccine hesitancy. To this end, several nations worldwide, including Pakistan, are struggling to boost public trust and enthusiasm to get vaccinated, especially in an anxious and complicated atmosphere propelled by multiple, new and the deadliest variants of COVID-19. To address this critical research gap during these intensifying conditions of vaccine hesitancy, the present study makes the first attempt to explore the potential effects of various communication strategies, including public service message (safety benefits versus fear appraisals), media types (i.e., traditional versus digital), self-efficacy, perceived benefits and threats (susceptibility and severity), on the willingness to get vaccinated for COVID-19. Importantly, the underlying effects of public skepticism (in a moderating role) on these relationships were empirically examined. Using four fictitious COVID-19 immunization campaigns in a series of experiments with 2 (media type: traditional vs. digital) X 2 (service attribute: health and safety benefits vs. fear) message frames (represented as Group one to Group four), the findings identified fear appraisal as the most viable communication strategy in combating vaccine hesitancy. Moreover, public skepticism negatively moderated the effects of media types and public service message attributes on willingness to get vaccinated in relatively high (i.e., Group two), moderate (i.e., Group one and four), and low intensities (i.e., Group three). The pioneering findings of this research offer new strategic insights for the global health authorities and vaccine promoters to proactively address the downward spiral of people’s willingness to take the COVID-19 vaccine.

scholarly journals A Systematic Review of Landsat Data for Change Detection Applications: 50 Years of Monitoring the Earth

2021 ◽  
Vol 13 (15) ◽  
pp. 2869
Author(s):  
MohammadAli Hemati ◽  
Mahdi Hasanlou ◽  
Masoud Mahdianpari ◽  
Fariba Mohammadimanesh
Keyword(s):  
Time Series ◽  
Change Detection ◽  
Policy Development ◽  
Atmospheric Correction ◽  
Open Data ◽  
Detection Methods ◽  
Landsat 8 ◽  
Landsat Images ◽  
Detection Analysis ◽  
The Impact

With uninterrupted space-based data collection since 1972, Landsat plays a key role in systematic monitoring of the Earth’s surface, enabled by an extensive and free, radiometrically consistent, global archive of imagery. Governments and international organizations rely on Landsat time series for monitoring and deriving a systematic understanding of the dynamics of the Earth’s surface at a spatial scale relevant to management, scientific inquiry, and policy development. In this study, we identify trends in Landsat-informed change detection studies by surveying 50 years of published applications, processing, and change detection methods. Specifically, a representative database was created resulting in 490 relevant journal articles derived from the Web of Science and Scopus. From these articles, we provide a review of recent developments, opportunities, and trends in Landsat change detection studies. The impact of the Landsat free and open data policy in 2008 is evident in the literature as a turning point in the number and nature of change detection studies. Based upon the search terms used and articles included, average number of Landsat images used in studies increased from 10 images before 2008 to 100,000 images in 2020. The 2008 opening of the Landsat archive resulted in a marked increase in the number of images used per study, typically providing the basis for the other trends in evidence. These key trends include an increase in automated processing, use of analysis-ready data (especially those with atmospheric correction), and use of cloud computing platforms, all over increasing large areas. The nature of change methods has evolved from representative bi-temporal pairs to time series of images capturing dynamics and trends, capable of revealing both gradual and abrupt changes. The result also revealed a greater use of nonparametric classifiers for Landsat change detection analysis. Landsat-9, to be launched in September 2021, in combination with the continued operation of Landsat-8 and integration with Sentinel-2, enhances opportunities for improved monitoring of change over increasingly larger areas with greater intra- and interannual frequency.

scholarly journals Screening for Melanoma and Other Skin Cancer Shows a Higher Early Melanoma Incidence: Social Educational Program “Life Fear-Free”

2021 ◽  
Vol 8 (1) ◽  
pp. 54-68
Author(s):  
Lev Demidov ◽  
Igor Samoylenko ◽  
Nina Vand ◽  
Igor Utyashev ◽  
Irina Shubina ◽  
...  
Keyword(s):  
Skin Cancer ◽  
Screening Program ◽  
Excisional Biopsy ◽  
Skin Lesions ◽  
Detection Methods ◽  
Non Melanoma Skin Cancer ◽  
The Social ◽  
Educational Campaign ◽  
Skin Cancer Detection ◽  
The Impact

Background: The screening program Life Fear-Free (LFF) aimed at early diagnosis of cutaneous melanoma (CM) was introduced in Samara, Chelyabinsk, Yekaterinburg, and Krasnodar (Russia) in 2019. Objectives: To analyze the impact of the program on early CM and non-melanoma skin cancer (NMSC) detection. Methods: According to the social educational campaign, people were informed about CM risk factors and symptoms and were invited for skin examination. The program planned to involve 3200 participants in total. Participants with suspicious lesions were invited for excisional biopsy. Results: 3143 participants, including 75.4% women, were examined for skin lesions. The average age of the participants was 43.7 years. Mostly skin phototypes II and III were registered (48.2% and 41.0%, respectively); 3 patients had CM, 15 had basal cell carcinoma, and 1 had Bowen’s disease, which were confirmed histologically. All detected melanomas had Breslow’s thickness of 1 mm. Conclusion: The participants showed high interest in early skin cancer detection programs. The incidence rate of CM and NMSCs among the program participants was higher than in general public. The early disease grade was proven for the detected CMs and NMSCs. The study has shown that it is important to continue such programs.

A noise reduction method for semi-supervised community detection based on harmonic function

2018 ◽  
Vol 32 (14) ◽  
pp. 1850166 ◽  
Author(s):  
Lilin Fan ◽  
Kaiyuan Song ◽  
Dong Liu
Keyword(s):  
Harmonic Function ◽  
Prior Knowledge ◽  
Community Detection ◽  
Detection Methods ◽  
Detection Process ◽  
Knowledge Based ◽  
Detection Approach ◽  
Series Of Experiments ◽  
Novel Strategy ◽  
The Impact

Semi-supervised community detection is an important research topic in the field of complex network, which incorporates prior knowledge and topology to guide the community detection process. However, most of the previous work ignores the impact of the noise from prior knowledge during the community detection process. This paper proposes a novel strategy to identify and remove the noise from prior knowledge based on harmonic function, so as to make use of prior knowledge more efficiently. Finally, this strategy is applied to three state-of-the-art semi-supervised community detection methods. A series of experiments on both real and artificial networks demonstrate that the accuracy of semi-supervised community detection approach can be further improved.

Structural Media Types in the Development of Data-Intensive Web Information Systems

2004 ◽  
pp. 34-70 ◽  
Author(s):  
Klaus-Dieter Schewe ◽  
Bernhard Thalheim
Keyword(s):  
Information Systems ◽  
Conceptual Modeling ◽  
User Preferences ◽  
Data Intensive ◽  
Media Type ◽  
Web Information ◽  
Media Objects ◽  
Data Content ◽  
Media Types ◽  
Web Information Systems

In this chapter, a conceptual modeling approach to the design of web information systems (WIS) will be outlined. The notion of media type is central to this approach. Basically, a media type is defined by a view on an underlying database schema, which allows us to transform the data content of a database into a collection of media objects that represent the data content presented at the web interface. The view is extended by operations and an adaptivity mechanism, which permits the splitting of media objects into several smaller units in order to adapt the WIS to different user preferences, technical environments and communication channels. The information entering the design of media types is extracted from a previous story boarding phase. In consecutive phases, media types have to be extended by style patterns as the next step toward implementation.

The Use of New Media Applications in Corporate Social Responsibility

2021 ◽  
pp. 274-291
Author(s):  
Eda Turanci ◽  
Nefise Sirzad
Keyword(s):  
Corporate Social Responsibility ◽  
New Media ◽  
Social Responsibility ◽  
Research Results ◽  
Different Types ◽  
Media Types ◽  
Corporate Social ◽  
Media Applications ◽  
The Impact

Corporate social responsibility is the responsibility of the corporations towards the stakeholders, the environment, and society. It covers the voluntary practices for the solution of social problems. Similar to other areas, new media applications offer new opportunities in terms of corporate social responsibility practices. In addition, it is now possible for companies to benefit from four different types of media: “paid, earned, shared, and owned media”. The purpose of this study is to reveal how corporations take advantage of paid, owned, earned, and shared media using new media applications in their social responsibility practices. For this purpose, the Vodafone Turkey Foundation's #BuMamaBenden project is selected as a case study and examined. The research results show that new media applications can be used as an effective tool to reach people. Moreover, the coordinated use of these four media types can increase the impact of corporate social responsibility projects and keeps them alive.

The Use of New Media Applications in Corporate Social Responsibility

2021 ◽  
pp. 874-891
Author(s):  
Eda Turanci ◽  
Nefise Sirzad
Keyword(s):  
Corporate Social Responsibility ◽  
New Media ◽  
Social Responsibility ◽  
Research Results ◽  
Different Types ◽  
Media Types ◽  
Corporate Social ◽  
Media Applications ◽  
The Impact

Corporate social responsibility is the responsibility of the corporations towards the stakeholders, the environment, and society. It covers the voluntary practices for the solution of social problems. Similar to other areas, new media applications offer new opportunities in terms of corporate social responsibility practices. In addition, it is now possible for companies to benefit from four different types of media: “paid, earned, shared, and owned media”. The purpose of this study is to reveal how corporations take advantage of paid, owned, earned, and shared media using new media applications in their social responsibility practices. For this purpose, the Vodafone Turkey Foundation's #BuMamaBenden project is selected as a case study and examined. The research results show that new media applications can be used as an effective tool to reach people. Moreover, the coordinated use of these four media types can increase the impact of corporate social responsibility projects and keeps them alive.

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