Communication Technologies Research Articles

Preparation of hybrid W entangled states between superconducting qubits and microwave resonators in circuit QED

Hybrid W entangled states are essential in quantum information processing, quantum communication, and quantum technology. In this Letter, we propose a simple method to prepare hybrid W entangled states between n superconducting (SC) qubits and n microwave resonators (MRs) in circuit QED. Only two basic operations are needed for the preparation of hybrid W states. The operational time decreases as the number of qubits increases. Since no ancillary cavity is required, the hardware resources for the state preparation are minimized. Because the state preparation does not involve any measurements, the hybrid W entangled states are generated in a deterministic way. Moreover, during the entire preparation, the high-energy levels of the SC qutrits remain unexcited, which greatly reduces decoherence of the SC qutrits. As an example, our numerical simulation demonstrates that high-fidelity preparation of the hybrid W entangled state of three SC qubits and three MRs is feasible within the current circuit QED technique. This method is universal and can be applied to generate hybrid W states of n matter qubits (e.g., atomic qubits, NV center qubits, quantum dot qubits, and magnon qubits) and n photonic qubits in various physical systems.

Efficient Nanofibrous Electromagnetic Wave Absorber Inspired by Spider Silk Hunting.

With the rapid advancements in wireless communication and radar detection technologies, there has been a significant uptick in the utilization frequency of electromagnetic waves across both civilian and military sectors, consequently generating substantial electromagnetic radiation and interference. These electromagnetic pollutants present a considerable threat to public health and information security. Consequently, materials capable of absorbing and mitigating electromagnetic pollution have garnered significant attention.The nanomaterials with multiple components and various heterogeneous interfaces have been considered as preferred efficient electromagnetic wave (EMW) absorbers. In this work, carbon nanofibers doped with magnetic metal oxide particles (Co/Ni-CNFs) are prepared by electrospinning and heat treatment. In these samples, the minimum reflection loss can reach -40.13dB at 4.6mm, and the widest effective absorption bandwidth is 4.4GHz. The excellent microwave absorption is attributed to the appropriate impedance matching. The electromagnetic parameters of Co/Ni-CNFs are balanced by adjusting the concentration of magnetic metal-organic framework material (MOFs) in the precursor solution. It is believed that this work can provide a reference for developing lightweight, flexible, and robust electromagnetic wave-absorbing materials.

Bottom-Up Formation of III-Nitride Nanowires: Past, Present, and Future for Photonic Devices.

The realization of semiconductor heterostructures marks a significant advancement beyond silicon technology, driving progress in high-performance optoelectronics and photonics, including high-brightness light emitters, optical communication,and quantum technologies. In less than a decade since 1997, nanowires research has expanded into new application-driven areas,highlighting a significant shift toward more challenging and exploratory research avenues. It is therefore essential to reflecton the past motivations for nanowires development, and explorethe new opportunities it can enable. The advancement of heterogeneous integration using dissimilar substrates, materials, and nanowires-semiconductor/electrolyte operating platforms is ushering in new research frontiers, including the development of perovskite-embedded solar cells, photoelectrochemical (PEC) analog and digital photonic systems, such as PEC-basedphotodetectors and logic circuits, as well as quantum elements, such assingle-photon emitters and detectors. This review offersrejuvenating perspectives on the progress of these group-III nitride nanowires,aiming to highlight the continuity of research toward high impact, use-inspired researchdirections in photonics and optoelectronics.

Social Media as a Village Government Communication Channel in Improving Public Services to the Community in Minahasa Regency

Public service issues are still often the main topic in society, starting from the lack of clear information and slow service that occurs in government in various cases, both related to information, administration and implementation of development in various fields, to the lack of resources that are able to provide the best service to the community. The current era of information technology, new media, which includes social media, is certainly one of the right solutions in overcoming communication and information problems for the government, but the problem is whether social media has been used optimally in carrying out public service duties by the government, especially the government in the village. Along with the many complaints from the public regarding government services, even though communication and information technology is already present in the midst of society and the government. This is the basis of this study, to be studied and studied in more depth, using a qualitative research approach, related to how social media becomes a communication channel for village governments in improving public services. Village governments in Minahasa Regency, North Sulawesi Province have not optimally used social media as an information channel in an effort to improve public services. This is evidenced by the lack of official social media from the village government as a media/information channel in supporting public services. Not all village governments have the human resource capabilities that can manage and operate social media well, actively and intensively in providing information to the public regarding programs, policies, and government regulations. Most village governments in Minahasa Regency do not yet have official social media as a medium/channel of information to the public. There are still many village government officials who use their personal social media for the needs of conveying information to the public, even then only when necessary. Obstacles to the Village Government in utilizing social media to improve public services include limited human resources, technological infrastructure, and cultural constraints, these factors affect the effectiveness of communication through social media.

The Role of Satisfaction in Mediating the Relationship between Brand Trust and Brand Image towards Consumer Loyalty on E-Commerce Platforms

The rapid development of communication technology today offers increasingly diverse forms of communication, making communication unrestricted by boundaries, distance, space, or time. This is also driven by the continuous growth in internet usage, which has become a lifestyle for people to meet their needs. One of the needs that massively utilizes the internet is the activity of purchasing goods or services online, or what is known as e-commerce, which refers to the use of communication networks and computers to conduct business processes. The online business world is closely associated with various issues such as fraud, dissatisfaction, and other forms of dishonesty by marketers. Customer satisfaction has a positive impact on customer loyalty. Customer loyalty is usually identified through repeated purchasing patterns. Satisfied customers tend to make repeat purchases and demonstrate loyalty to the product. Customer satisfaction is the feeling of pleasure or disappointment experienced by a customer when comparing a product's performance with their previous expectations of the product. If the product's performance fails to meet expectations, the customer will be dissatisfied. This research aims to determine whether satisfaction can mediate the relationship between brand trust and brand image towards loyalty. The population in this study consists of residents in Denpasar City, with the sample determined using purposive sampling. Data analysis techniques use SEM PLS.

Governmental implementation of information and communication technology at the local level: Digital co‐production during a crisis

AbstractThe rapid expansion of volunteerism, especially during COVID‐19, requires efficient organisation of citizen volunteers, thus leading professionals to utilise information and communication technology (ICT) as an enabling tool for interaction and coordination. This study focuses on professionals’ perspectives at the local level regarding governmental steps towards digitalisation and its application in volunteer co‐production. The policy implementation approach was used through in‐depth interviews with 19 local coordinators in Israel during the COVID‐19 crisis. This study found that, while central government invested efforts in training, guidance, and ICT support for professionals, the implementation of digital technologies was not successful at the local level. This highlights the need for digital platforms for volunteer coordination to be be tailored to specific cultural characteristics and local contexts. Neglected but important factors in ICT implementation were identified, including intra‐organisational dynamics, the local community, and authority. By addressing these contextual factors and adopting a more inclusive and context‐sensitive approach, digital platforms can better support local volunteer coordination efforts.Points for practitioners Adopt a holistic approach to digitalisation: Senior‐level administrators in central government should adopt a holistic approach to digitalisation, one that accounts for local contexts—cultural characteristics and collaborative governance structures. This approach should involve coordinators in the development process, together with other stakeholders involved in co‐production. Focus on user‐centric platform design and implementation: To ensure usability and acceptance among coordinators, practitioners should prioritise a user‐centric approach to platform design and implementation. This entails constructing intuitive, user‐friendly platforms, meeting the needs of the coordinators involved in the digitalisation process. Address organisational characteristics and overcome barriers: Practitioners should recognise municipal organisational characteristics, thus obviating potential barriers to digital technology implementation. This includes such factors as status and professional position within the municipality, securing bureaucratic commitment, and overcoming governmental bureaucracy or a lack of leadership.

Minimal lateral damage fabrication of high-temperature superconducting nanowires via focused helium ion beam irradiation

Abstract The low temperature superconducting nanowire single-photon detectors have become a key infrared photon counting technology in communication and astronomy applications. However, the constrained physical space of devices demands for high-performance superconducting detectors capable of operation at higher temperature. To date, the fabrication of high temperature superconductor nanowires is still facing seriously uneven lateral damage during ion etching process. In this work, we report a promising fabricating method for high-temperature superconducting YBa2Cu3O7−x (YBCO) nanowires, using a focused helium ion beam to minimize the lateral damage of the cut. Based on the simulation, we designed tangent circles and adjacent isosceles triangles to replace lines in cutting nanowires for reducing the superimposed damage of He+ ions. The lateral damage of single helium ion cut has been reduced with a superimposed damage width decrease from 58.8 nm to 29.7 nm. This work provides a platform for boosting the YBCO nanowires to achieve single photon detection.

Communication and information model of the inclusion of digital participation in the evaluation of social processes

The evolution and wide use of modern technologies, tools and methods of communication are an integral part of the modern information society. In particular, current communication and information technologies provide an opportunity to create and extract a digital footprint for an individual or a certain group. In relation to the public authorities’ activities, the digital footprint can be used to analyse the reaction of society to their actions more effectively. By researching the digital footprint of social media actors in a particular region, it is possible to determine how the population treats various decisions and measures taken by the authorities. Due to digital participation, citizens have the opportunity and a tool to facilitate the management process at the stages of decision-making. The digital participation generates a digital footprint, the analysis of which provides feedback on the actions of the authorities. The purpose of the article is to propose a communicative and information model for the inclusion of the digital participation in the evaluation of social processes, consisting of mechanisms and interfaces for obtaining information alongside with mechanisms and interfaces for receiving feedback for evaluating the activities of public authorities in the region. The efficiency of the model has been practically proved by the example of a socially significant event in the Oryol region. Using the example of regional management centres, the expediency of introducing the model for evaluating the activities of public authorities in the region through receiving feedback is shown. This will increase the involvement of citizens in the regulation of social processes in the region and improve the quality of management.

‘Give us the numbers!’: sovereign capture and the undermining of shared situational awareness in the UK’s COVID-19 response

ABSTRACT Shared situational awareness is advanced as a solution to the problem of collaborative decision-making in multi-agency emergency responses. By harnessing information and communication technologies to construct and distribute a common understanding of the event, shared situational awareness promises to optimise, distribute and devolve decision-making, thus improving the overall speed and efficiency of emergency responses. However, in the context of actual emergencies shared situational awareness is found to routinely breakdown. This paper draws upon 41 interviews conducted with emergency responders on their experience of using ResilienceDirect to manage shared situational awareness in the UK COVID-19 response. We argue that while shared situational awareness attempts to technologise the problem of sovereign decision-making in emergencies, UK emergency response frameworks contain a latent potential for sovereign capture. As the COVID-19 response demonstrates, an atmosphere of distrust; desire for secrecy and control; and the ubiquity of hierarchies throughout UK Civil Contingencies permitted the reactualisation of sovereign modes of control to frustrate and displace bottom-up modes of emergency organisation meant to guide UK emergency responses. Elucidating the impediments to achieving shared situational awareness within actual response raises urgent questions regarding the robustness of shared situational awareness to political interference within major emergency events.

Comprehensive Characterization of Bi1.34Fe0.66Nb1.34O6.35 Ceramics: Structural, Morphological, Electrical, and Magnetic Properties

Recent research in solid-state physics and materials engineering focuses on the development of new dielectric materials, with bismuth-based pyrochlores being already extensively applied in communications technology for their excellent dielectric properties and relatively low sintering temperatures. Herein, the structural, morphological, electrical, and magnetic properties of Bi1.34Fe0.66Nb1.34O6.35 ceramic, prepared by the sol–gel method and sintered at 500 °C, are investigated. The Rietveld refinement of the XRD pattern showed a cubic phase belonging to the space group Fd-3m and a crystallite size of 42 nm. Transmission electron microscopy further confirmed the crystallite size and the homogeneous distribution of Bi, Fe, Nb, and O elements, as evidenced by high-angle annular dark field imaging and STEM-EDX mapping. The morphology of the sample, assessed by scanning electron microscopy, is characterized by submicron-sized spherical particles. Dielectric spectroscopic studies revealed that the dielectric properties, strongly influenced by frequency and temperature, indicate the material’s potential for energy storage due to lower dielectric loss compared to the dielectric constant. The observed relaxation phenomena, confirmed through variations in dielectric loss and loss tangent, highlight the influence of grain boundaries and temperature on electron hopping and charge carrier dynamics. Using SQUID magnetometry, we identified two distinct magnetic phases. The primary phase, corresponding to the Bi1.34Fe0.66Nb1.34O6.35 ceramic, exhibits an antiferromagnetic behavior below its Néel temperature at around 8.8 K. A secondary high-Curie temperature ferrimagnetic phase, likely vestigial maghemite and/or magnetite, was also detected, indicating an estimated fraction below 0.02 wt.%.

Investigating the Relationship Between Social Networks and the Academic Performance of University Students (Case Study: Faryab University Students)

In recent decades, with the increasing expansion of communication technology, the use of social networks has become one of the most important online activities. However, technology has not only had positive effects on human relationships and personal communication, but its negative effects on academic performance are also well-known. This research focuses on evaluating the negative effects of social networks on academic performance, with a focus on students of Faryab University. This research is applied in terms of classification based on the objective, and can be considered a descriptive-correlational research in terms of methodological classification. The total sample size includes all day students, which is 3000, and a sample of 268 individuals has been selected based on Morgan's table. The questionnaire is used as a data collection tool, and the SPSS software is used for descriptive and inferential statistics (relationship and correlation) for data analysis. The findings of the research indicate a pervasive negative relationship between the use of social networks and academic performance among Faryab University students. While positive interactions such as parental support and strategic personal and peer interactions can increase academic results, potential drawbacks such as distraction, stress, and addiction require a comprehensive approach to deal with the challenges arising from social media.

Understanding Sunda Wiwitan of Cigugur Kuningan: Between Tradition, Culture, and Adaptation of Communication Technology

Sunda Wiwitan in Cigugur Kuningan maintains respect for the traditions and customs that have become an integral part of their culture. Along with the rapid changes in communication technology, this research aims to understand the development of communication technology in the Sunda Wiwitan community and how they preserve their culture in the modern era. The research method used is a descriptive qualitative approach, which includes interviews and content analysis to collect data from key informants. The results showed that although the Sunda Wiwitan community quickly adopted modern communication technologies such as the internet and social media, they also needed time to develop appropriate usage guidelines. The research revealed that despite accepting new technologies, this community remains committed to maintaining their cultural values and traditions, including the use of traditional clothing to filter out foreign cultural influences. The implications of this research suggest that technology can be integrated into indigenous communities without erasing their cultural identity. In addition, the results highlight the importance of developing policies that support cultural preservation in the midst of technological advances, as well as the need for education for community members to optimize the use of technology while still respecting and preserving their traditions.

Telemedicine and time management in primary care.

Information and communication technologies (ICTs) can enable workers to structure work in novel ways, allow for better time management, and increase work scheduling autonomy. Time management and work scheduling are important factors in the field of clinical practice in primary care. Time limits on consultation are a key constraint on the delivery of good care since the length of patient-physician consultation impacts its quality. This research aimed to examine the experiences of primary care physicians (PCPs) when using telemedicine technologies (TTs), a type of ICT, in their communication with patients. During 2023 in-depth interviews were conducted with 20 Israeli PCPs: family physicians and pediatricians. Perception and management of time emerged as a focal subject in the interviews. The PCPs interviewed described several effects of TTs on time management in primary care. They portrayed TTs as saving time for patients and having a mixed effect on the healthcare organization: both saving and wasting their work time. TTs were described as impacting their time management in the context of work-life balance, allowing them to manage their time during and between appointments. For PCPs, TTs can be beneficial for managing time in the clinic, which can contribute to better healthcare. This article, concerning TTs as a type of ICT, contributes to the existing literature which suggests that ICTs can allow for better time management and increase work scheduling autonomy. It also presents several recommendations for better implementation of TTs in healthcare organizations.

Participatory Community Learning to Develop a Digital Market Management System for Community Enterprises and Stable Occupation Groups Nam Phrik Kaeng Krua Khanong, Song Khanong Subdistrict, Sam Phran District, Nakhon Pathom Province

Background and Aim: Digital Marketing Management is critical for successfully promoting products and services in the digital age. It allows businesses to reach a larger audience, interact with customers in real-time, and tailor strategies based on data insights to boost growth and brand awareness. This study investigates the digital marketing practices of the Song Khanong Occupation Group in Prik Kaeng Krua Khanong, Nakhon Pathom Province, aiming to enhance customer engagement, brand awareness, and sales outcomes by focusing on Generation Z and Baby Boomers. Materials and Methods: A mixed-methods approach was utilized, combining surveys of 200 community members on digital media usage, content preferences, brand perception, and customer satisfaction, along with interviews with key stakeholders about marketing strategies. Data analysis involved calculating mean scores to assess satisfaction with digital marketing elements. Results: Results showed high satisfaction among Generation Z, with Facebook as the preferred platform (mean score: 4.86). Infographics and videos received the highest scores (4.93 and 4.80, respectively), while Baby Boomers valued brand aesthetics (overall score: 4.77). Tools like Chatbots and QR Codes enhanced user experience significantly. Conclusion: The study underscores the need for effective digital marketing strategies in community enterprises to boost engagement and brand recognition. High satisfaction levels indicate that tailored content and a robust online presence are essential for customer retention. Future efforts should focus on continuous improvement and leveraging technology for better communication, enabling sustainable growth for community enterprises in Song Khanong.

Mechanically strong, transparent polyimide composite thin films with a low dielectric constant

Aromatic polyimide is widely used in microelectronics as dielectric packaging layers. There is a high demand to reduce its dielectric constant to meet the fast development of communication technology. Here we report a simple and eco-friendly approach to preparing polyimide films with a lowered dielectric constant by adding silica hollow nanospheres with an average size of 100 nm in an aqueous solution of poly(amic acid) salt, and subsequent film casting and thermal imidization. The silica hollow nanospheres present a uniform distribution in polyimide matrix after surface modification with 3-aminopropyltriethoxysilane. The dielectric constant of the resulting composite films decreases linearly with particle loading till 15 wt% and reaches the lowest value of 2.5. The surface hardness and elastic modulus of the films improve by adding hollow nanospheres, while maintaining high optical transparency, high flexibility and a low coefficient of thermal expansion.

Virtual Computer Laboratory Learning System Integrated With Social Media And Video Conference

The advancement of information and communication technology has driven innovation in various aspects of education, including computer laboratory learning. Traditional computer laboratories often face challenges in terms of time, cost, and accessibility. To address these challenges, this study developed a virtual computer laboratory learning system integrated with social media and video conferencing. This system is designed to provide flexible access, allowing students to learn and practice anytime and anywhere. The integration of social media aims to enhance interaction and collaboration between students and instructors, while video conferencing enables real-time learning sessions with direct interaction. The research methods used include system design, software development, and system testing. The results showed that the virtual computer laboratory learning system integrated with social media and video conferencing can facilitate learning and is expected to be an innovative solution in information technology education.

Reallocate to the right place: The heterogeneous effect of internet use on factor allocation of rural households in China

How to improve factor (mis)allocation is an important topic for both economists and policy-makers. In the digital economy era, existing studies have investigated the impact of information and communication technologies on factor allocation of rural households, but little is known about the heterogenous effect on farmers with differentiated productivity. This study uses panel data from the Chinese Family Panel Studies from 2010 to 2020, to examine the impact of Internet use on factor allocation of rural households from the view of heterogeneity in their productivities. The results suggest that Internet use facilitates a flow of land from low- to high-productivity farmers, and farm labor migration to off-farm activities. Such effect is achieved though easing information constraints and all farmers gain higher income after the reallocation. Our findings suggest that promoting Internet penetration and its functions can help reduce misallocation and improve welfare in rural areas.

Intrusion Detection System for 5G Device-to-Device Communication Technology in Internet of Things

Intrusion Detection System for 5G Device-to-Device Communication Technology in Internet of Things

Leadership Strategies for Managing Human and Technological Diversity in the Industrial 5.0 Era: A Systematic Review

The problem formulation that arises from this research is how the efforts made by leaders in the industrial era 5.0 overcome problems related to the process of managing HR diversity and technological changes in increasing business innovation in order to increase business productivity and business sustainability, so that they can survive the changes that exist. This research focuses on discussing the efforts of leaders to overcome the problems of the process of managing HR diversity and technological changes in the 5.0 era in order to increase business innovation to increase business productivity and business sustainability. The results of the data analysis used used descriptive qualitative analysis using literature studies through systematic literature review. The research method uses a quantitative descriptive method of data analysis using the structural equation model (SEM) method, where the results of data processing with the SEM method are carried out with the PLS application. From the results of the study, it is concluded that the 5.0 leadership efforts in overcoming the management of HR diversity in increasing business innovation, namely building an inclusive culture, recognizing and appreciating diverse contributions, empowering employees, building intercultural skills, supporting inclusive research and development, using technology that supports engagement and collaboration and diversity-oriented monitoring and evaluation. The results concluded that the 5.0 leadership efforts in overcoming technology management in increasing business innovation, namely a deep understanding of technology, creating an environment that supports technological innovation, focusing on employee engagement and skills, partnering with technology experts, using technology for collaboration and communication, encouraging a culture of experimentation and learning, continuous review of processes and practices and recognition and reward for innovative contributions. Along with managing the diversity of human resources and technology in increasing business innovation, it can create more creativity and make leaders have to follow the direction and be able to adapt to changes so that the company can improve its performance and can continue to run its business optimally and be able to meet consumer needs properly.

A Power Control and Intervention Algorithm for Co-Existing IMT Base Stations and Satellite Services

IMT-2020 (International Mobile Telecommunications-2020) is the prevailing mobile communication technology at the moment, significantly affecting societal progress. Nevertheless, the roll-out of the IMT-2020 system has introduced numerous interferences to existing services. The coexistence with fixed satellite services has become a topical issue currently under consideration. This paper discusses the compatibility and interference issues between IMT-2020 and the 14 GHz FSS (fixed-satellite service) uplink, as well as the spectrum access issue solved by artificial intelligence methods. The study shows that the interference from IMT-2020 macro-base stations to FSS space stations exceeds the ITU standard by approximately 10 dB. To control the interference, a partition-based power control algorithm is proposed, which divides ground base stations into multiple areas and virtualizes each area’s base stations into a single large base station then applies power control to maximize the total transmission power of the base stations within the area. Furthermore, three intra-partition power control algorithms are introduced: average power allocation, power allocation based on channel gain, andna power allocation method based on the maximum intra-partition sum rate. Additionally, under the assumption that dynamic satellite nodes are available in the system for ground user access, a spectrum access algorithm utilizing deep reinforcement learning is designed. Simulation results confirm the effectiveness of the proposed scheme, which can reduce the interference from the IMT-2020 system to the FSS service below the threshold, ensuring harmonious coexistence of the two services.