Journal of Digital Science最新文献_第3页

Preliminary performance evaluation and verification of digital terrestrial television signal propagation 数字地面电视信号传播性能初步评估与验证

Journal of Digital Science Pub Date : 2021-12-28 DOI: 10.33847/2686-8296.3.2_4

L. Thamae, Itumeleng Potsanyane, Mpho Mokhetsengoane

{"title":"Preliminary performance evaluation and verification of digital terrestrial television signal propagation","authors":"L. Thamae, Itumeleng Potsanyane, Mpho Mokhetsengoane","doi":"10.33847/2686-8296.3.2_4","DOIUrl":"https://doi.org/10.33847/2686-8296.3.2_4","url":null,"abstract":"This article presents the computer simulation and field test measurement results on Channel 29 for the preliminary performance evaluation and verification of the newly-installed Lesotho digital terrestrial television network based on DVB-T2 standard following the guidelines and techniques specified by the ITU-R BT.2035-2. It evaluates, at predetermined outdoor locations for fixed and mobile reception, parameters such as received signal strength, signal quality, bit-error rate (BER) and threshold-of-visibility (ToV) together with TV signal decoding (observation of screen artefacts) for quasi error-free reception. The results indicate that at over 97% of the test sites/points at the university town of Roma, the main Berea Plateau transmitter from the capital city (Maseru) broadcasts digital television service with enough signal level and quality to be properly decoded. The measured signal strength threshold ranges above -50 dBm for good reception, -64 dBm to -50 dBm for acceptable reception and -69 dBm to -64 dBm for poor reception. With the noise floor at about -73 dBm, the minimum required C/N of around 23 dB for good reception and about 4 dB for ToV have been recorded. The relative values of minimum required respective signal strength and signal quality for ToV obtained from the set-top box are 33% and 18% for stationary reception, while they give 37% and 20% for mobile reception.","PeriodicalId":235278,"journal":{"name":"Journal of Digital Science","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126952214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coronavirus Genome Sequence Similarity and Protein Sequence Classification 冠状病毒基因组序列相似性与蛋白质序列分类

Journal of Digital Science Pub Date : 2021-12-28 DOI: 10.33847/2686-8296.3.2_1

P. Mukherjee, Y. Badr, Srushti Karvekar, Shanmugapriya Viswanathan

{"title":"Coronavirus Genome Sequence Similarity and Protein Sequence Classification","authors":"P. Mukherjee, Y. Badr, Srushti Karvekar, Shanmugapriya Viswanathan","doi":"10.33847/2686-8296.3.2_1","DOIUrl":"https://doi.org/10.33847/2686-8296.3.2_1","url":null,"abstract":"The world currently is going through a serious pandemic due to the coronavirus disease (COVID-19). In this study, we investigate the gene structure similarity of coronavirus genomes isolated from COVID-19 patients, Severe Acute Respiratory Syndrome (SARS) patients and bats genes. We also explore the extent of similarity between their genome structures to find if the new coronavirus is similar to either of the other genome structures. Our experimental results show that there is 82.42% similarity between the CoV-2 genome structure and the bat genome structure. Moreover, we have used a bidirectional Gated Recurrent Unit (GRU) model as the deep learning technique and an improved variant of Recurrent Neural networks (i.e., Bidirectional Long Short Term Memory model) to classify the protein families of these genomes to isolate the prominent protein family accession. The accuracy of Gated Recurrent Unit (GRU) is 98% for labeled protein sequences against the protein families. By comparing the performance of the Gated Recurrent Unit (GRU) model with the Bidirectional Long Short Term Memory (Bi-LSTM) model results, we found that the GRU model is 1.6% more accurate than the Bi-LSTM model for our multiclass protein classification problem. Our experimental results would be further support medical research purposes in targeting the protein family similarity to better understand the coronavirus genomic structure.","PeriodicalId":235278,"journal":{"name":"Journal of Digital Science","volume":"57 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124981574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strategic Design for Leather Tannery Industries 皮革制革工业战略设计

Journal of Digital Science Pub Date : 2021-12-28 DOI: 10.33847/2686-8296.3.2_7

Mayra Paucar, Pablo Israel Amancha Proaño, J. L. Santamaría Aguirre, M. P. Poveda

{"title":"Strategic Design for Leather Tannery Industries","authors":"Mayra Paucar, Pablo Israel Amancha Proaño, J. L. Santamaría Aguirre, M. P. Poveda","doi":"10.33847/2686-8296.3.2_7","DOIUrl":"https://doi.org/10.33847/2686-8296.3.2_7","url":null,"abstract":"The province of Tungurahua in Ecuador has a participation of 76% at the national level within the leather production chain with the production of raw materials, these are used in the manufacture of 80% of footwear in the country. These production processes generate environmental problems, the greatest impact being on the water, due to the dumping of liquid waste with chemical contents in rivers, this generates bad odors, gases, smoke and polluting solid waste from this process. According to data from tanneries, approximately 88% of the raw material is transformed, while the remaining 12% is considered as waste (leather trimmings), which are used in other manufacturing processes (footwear, textile industry, leather goods and others), the chip obtained from the process is compressed and discarded. As a preventive action, a process is proposed to generate new products through the use of waste obtained from leather processing. The design methodology is the Double Diamond: discover, define, develop and deliver a new product that reuses this waste, a block of dimensions 150 x 75 x 5 mm and 300 grams of weight was obtained, which can be applied in the sector of construction and allow the transition from a linear production process to a circular process.","PeriodicalId":235278,"journal":{"name":"Journal of Digital Science","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122880900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of big data on innovation and value generation in pharmaceutical sales and marketing 大数据对医药销售和营销创新和价值产生的影响

Journal of Digital Science Pub Date : 2021-12-28 DOI: 10.33847/2686-8296.3.2_3

A. Pesqueira

{"title":"The impact of big data on innovation and value generation in pharmaceutical sales and marketing","authors":"A. Pesqueira","doi":"10.33847/2686-8296.3.2_3","DOIUrl":"https://doi.org/10.33847/2686-8296.3.2_3","url":null,"abstract":"Using Big Data in the pharmaceutical industry is a relatively new technology, and the benefits and applications are yet to be understood. There are some cases currently being piloted, but others have already been adopted by some pharmaceutical organizations, proving the unmet need in a field that is still in its infancy.\u0000This paper aims to understand how and if Big Data can contribute to commercial innovation, as well as future trends, investment opportunities.\u0000Participants from 26 pharmaceutical companies participated in different focus groups where topics were grouped by individuals and evaluation areas were discussed to discover any potential connections between Big Data and Innovation in commercial pharmaceutical environments. This study used the collected data to analyze and draw conclusions about how many life sciences leaders and professionals already know about Big Data and are identifying examples and processes where Big data is supporting and generating innovation.\u0000In addition, we were able to understand that the industry is already comfortable with Big Data, and there were some very accurate research results regarding the most pertinent application fields and key considerations moving forward.\u0000Using the network analysis findings and the relationships and connections explained by respondents, we can reveal how Big Data and innovation are interconnected.","PeriodicalId":235278,"journal":{"name":"Journal of Digital Science","volume":"244 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128503157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Use of Digitization in Small and Medium-Sized Agricultural Enterprises: Evidence from the Czech Republic 数字化在中小型农业企业中的应用:来自捷克共和国的证据

Journal of Digital Science Pub Date : 2021-12-28 DOI: 10.33847/2686-8296.3.2_6

Martina Valentová, L. Dvořáková

引用次数: 0

Integrating a New Generation of Interoperability Agents into the AIDA Platform 将新一代互操作性代理集成到AIDA平台

Journal of Digital Science Pub Date : 2021-06-29 DOI: 10.33847/2686-8296.3.1_5

Francisca Nogueira, Diana Ferreira, R. Sousa, A. Abelha, J. Machado

引用次数: 0

Mobility Assistants to Support Multi-Modal Routes in Smart Cities: A Scoping Review 支持智慧城市中多模式路线的移动助手:范围审查

Journal of Digital Science Pub Date : 2021-06-29 DOI: 10.33847/2686-8296.3.1_3

N. Rocha, G. Santinha, Mário Rodrigues, Carlos Rodrigues, Alexandra Queirós, Ana Dias

{"title":"Mobility Assistants to Support Multi-Modal Routes in Smart Cities: A Scoping Review","authors":"N. Rocha, G. Santinha, Mário Rodrigues, Carlos Rodrigues, Alexandra Queirós, Ana Dias","doi":"10.33847/2686-8296.3.1_3","DOIUrl":"https://doi.org/10.33847/2686-8296.3.1_3","url":null,"abstract":"Objectives - This study aimed to identify: (i) the current research trends related to mobility assistants to support multi-modal routes in smart cities; (ii) the types of smart cities’ data being used; (iii) the methods applied to assess the proposed solutions; and iv) the major barriers for their dissemination. Methods - An electronic search was conducted in several databases, combining relevant keywords. Then titles and abstracts were screened against inclusion and exclusion criteria. Finally, the full texts of the eligible articles were retrieved and screened for inclusion. Results - A total of 19 articles were included. These articles either propose algorithms to optimize routes planning or presenting specific applications that make use of a broad range of smart cities’ data. Conclusion - The number of included articles is very reduced when compared with the total number of articles related to smart cities, which means that the mobility assistants to support multi-modal routes are still not significant within the smart cities’ research. Moreover, most of the included articles report applications in an early stage of development, which is a major barrier for the respective dissemination.","PeriodicalId":235278,"journal":{"name":"Journal of Digital Science","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116287458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Video Advertising: Connection and differences between consumers? 视频广告:消费者之间的联系与差异?

Journal of Digital Science Pub Date : 2021-06-29 DOI: 10.33847/2686-8296.3.1_2

Sónia Ferreira, S. Santos, Pedro Espírito Santo

引用次数: 1

Risk management in the healthcare safety management system 医疗安全管理体系中的风险管理

Journal of Digital Science Pub Date : 2021-06-29 DOI: 10.33847/2686-8296.3.1_4

Y. Voskanyan, I. Shikina, Fedor Kidalov, D. Davidov, Tatiana Abrosimova

引用次数: 5

How Do We Optimize Risk in Enterprise Architecture when Deploying Emerging Technologies? 在部署新兴技术时，我们如何优化企业架构中的风险?

Journal of Digital Science Pub Date : 2021-06-29 DOI: 10.33847/2686-8296.3.1_1

C. Griffy-Brown, M. Chun, Howard Miller, Demetrios Lazarikos

{"title":"How Do We Optimize Risk in Enterprise Architecture when Deploying Emerging Technologies?","authors":"C. Griffy-Brown, M. Chun, Howard Miller, Demetrios Lazarikos","doi":"10.33847/2686-8296.3.1_1","DOIUrl":"https://doi.org/10.33847/2686-8296.3.1_1","url":null,"abstract":"Emerging Technologies which merge cyber-physical systems continue to transform businesses and digital agility in transformative ways. Importantly, most investigations around focus on either cyber risk or the risk around physical systems but it does not encompass both. However, the immediate challenge is new opportunities occurring with emerging technologies. Examples include automobiles, the Internet of Things (IoT), medical devices, and building controls. In this study we will focus identifying risk as an optimization not a minimization problem and how to develop a practical approach for executives and boards to use in the oversight of cyber physical systems. Based on interviews with executive leadership teams and boards of directors we explored the over-arching research question: How can we apply a risk-based approach to cyber-physical security and what questions should business leaders be asking? The research methodology used a survey instrument and multiple qualitative methods involving business leaders from 60 companies and 80 business leaders from September 2018 – September 2019. Based on this analysis, we developed an extended framework for executives, as well as questions and process for boards to consider as part of their oversight. The Extended Risk-Based Approach equips boards and executives as they begin to develop their thinking around enterprise cyber physical risk.","PeriodicalId":235278,"journal":{"name":"Journal of Digital Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114439082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4