bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Induced Magnetic Field on MHD Flow Between Two Parallel Porous Plates at Constant Temperature Gradient in Presence of Inclined Magnetic Field
Authors: Rabha Kankana , Al Khayer Saleem Jabed , Chakraborty Shyamanta
Published: April 2024

The paper studies effect of induced magnetic field on laminar convection flow of a viscous electrically conducting incompressible fluid between two parallel porous plates at constant temperature gradient in presence of a uniform inclined magnetic field. An angle (θ) is formed with the vertical line by applying a magnetic field in that direction and field is strong enough to induce another field along the line of flow. Using the proper similarity transformations, the flow equations are converted into ordinary differential equations, which are then numerically solved by using MATLAB's bvp4c solver. Plotting of the graphs allows one to examine the effects of several critical parameters such as Hartmann number, Darcy number, Magnetic Reynolds number, Prandtl number, and Field inclination on velocity field, induced magnetic field, temperature field at the plates. The acquired results demonstrate that the flow system is effectively influenced by the field inclination, the magnetic parameter, and the plate porosity. The rise in field inclination leads to an increase in magnetic drag force.
DFT Studies on Electronic, Elastic, Thermoelectric and Optical Properties of New Half-Heusler XRhZ (X = V, Nb and Z = Si, Ge) Semiconductors
Authors: Ahmed Bendehiba Sid , Anissa Besbes , Radouan Djelti , Al Bouzieh Najwa , Durukan I. Kars , Amrane Noureddine
Published: April 2024

Density functional theory is used to explore the physical properties of the new half-Heusler alloys XRhZ (X =V, Nb and Z = Si, Ge). The exchange-correlation effects were treated by the TB-mBJ potential. The four studied compounds are nonmagnetic semiconductor with an indirect band gap. The formation enthalpy, cohesive energy and phonon band structures demonstrated that these semiconductors are structurally and dynamically stable. It was predicted by the elastic study that the XRhZ compounds (X = V, Nb and Z = Si, Ge) have stable mechanical properties, they possess an anisotropic character and reveal the ductile nature with a B/G ratio >1.75. The optical results show an interesting photocatalytic potential for the NbRhSi and NbRhGe semiconductors; they exhibit a high absorption coefficient in the visible domain, which is around 112.104 cm-1. For energies greater than 10 eV (UV domain), the refractive index is less than one. The thermoelectric results confirmed that the XRhZ (X=V, Nb and Z=Si, Ge) compounds are very attractive for thermoelectric devices working in large temperature range including ambient temperature.
Preparation of N-Si-P-GaSe Heterojunctions Based on an Amorphous GaSe Layer Without Impurities and Study of Their Electrical Properties
Authors: Madatov Rahim Salim , Alekperov A.S. , Nurmammadova F.N. , Ismayilova Narmin A. , Jabarov Sakin H.
Published: April 2024

The electrical and photoelectric properties of anisotype n-Si−p-GaSe heterojunctions obtained as a result of the deposition of a GaSe thin layer on a cold n-Si single crystal substrate by the thermal evaporation method were studied. It was determined that the height of the potential barrier in thermal annealing structures at T = 200 °C during t = 3 hours occurs due to the decrease in the density of states of local levels located near the Fermi level in the amorphous layer. The mechanism of photosensitivity in an isotype heterostructures was analyzed and it was found that the photosensitivity of the heterojunction increases as a result of a decrease in the surface density of state at the contact boundary of the components, by thermal means. The spectral distribution of the quantum efficiency in the n‑Si – p‑GaSe heterojunction was studied and their perspective was determined.
Structural Properties of Silicon Doped Rare Earth Elements Ytterbium
Authors: Daliev Khodjakbar S. , Utamuradova Sharifa B. , Khamdamov Jonibek J. , Bekmuratov Mansur B.
Published: April 2024

This paper presents the results of a study of the state of ytterbium atoms in silicon, carried out using the methods of Fourier transform infrared spectroscopy (IR) and Raman spectroscopy (RS). Silicon samples doped with ytterbium impurities were analyzed using FSM-2201 and SENTERRA II Bruker spectrometers. Registration and identification of both crystalline and amorphous phase components in the samples was carried out. The results of the study confirm that doping silicon with ytterbium impurities leads to a decrease in the concentration of optically active oxygen  by 30-40%, depending on the concentration of the introduced impurities. It was also found that an increase in the number of defects leads to a broadening of the amorphous zone. It is assumed that similar dependencies exist for the Si-Yb system; however, to the best of our knowledge, similar results have not been reported previously. It is noted that the relative intensity of the three Raman bands in Si-Yb systems in the LTIOS (The light and temperature induced ordered state) state changes, and the relative intensity of Si-Si decreases. This indicates that pendant bonds are mainly formed by the breaking of Si-Si bonds. It was also observed that the light intensity causing this condition is far from that required for laser or solid phase crystallization. Using the Raman spectroscopy method, a structural transformation was discovered, expressed in a densely packed array of nanocrystals with a size of less than 11 lattice parameters. Small clusters were under strong internal stress (up to 3 GPa), which probably prevents the cluster size from increasing beyond the critical value for irreversible crystallization.
Study of the Charge Carrier Collection Coefficient of Silicon p-i-n Photodiodes
Authors: Kukurudziak Mykola S. , Maistruk Eduard V.
Published: April 2024

The paper investigates the collection coefficient of minority charge carriers in silicon p-i-n photodiodes and the influence of certain technological factors on it. It has been found that the diffusion length of minority charge carriers and the resistivity of the material have a significant effect on the value of the collection coefficient, since the collection area of photogenerated charge carriers increases with increasing these parameters. It was also found that an effective method to increase the collection coefficient of photodiodes is to ensure that the thickness of the high-resistance region of the photodiode is equal to the sum of the diffusion length of minority charge carriers and the width of the space charge region. The effect of the concentration of dopants on the responsivity and collection coefficient is investigated. It was found that, in contrast to the calculated data, in which the collection coefficient increases with decreasing concentrations of phosphorus and boron, in the experimental data, with decreasing concentrations of impurities, the responsivity and, accordingly, the collection coefficient decrease due to a decrease in the degree of heterogenization and, as a result, a decrease in the width of the space charge region and the diffusion length of minority charge carriers.
Investigation of Temperature and Channel Dimension Effects on CMOS Circuit Performance
Authors: Messai Zitouni , Brahimi Abdelhalim , Saidani Okba , Bourouba Nacerdine , Yousfi Abderrahim
Published: April 2024

This paper presents the impact of temperature variations and alterations in transistor channel dimensions on CMOS (Complementary Metal-Oxide-Semiconductor) circuit technology. To facilitate this investigation, we first identified critical parameters characterizing the device's performance, which could exhibit susceptibility to these influences. The analysis encompassed critical metrics such as the transfer characteristic, drain current, logic levels, inflection points, and truncation points. These parameters enabled us to validate the results obtained from the PSPICE simulator, which demonstrated unequivocal effectiveness. Notably, our simulation results unveiled significant effects resulting from a wide temperature range spanning from -100°C to 270°C, offering valuable in-sights into thermal-induced failures. Additionally, the influence of channel dimension changes on factors like drain current and transfer characteristics, as well as temporal parameters including signal propagation delay and rise and fall times, were meticulously examined and appreciated.
Comparative EPR Analysis of Modern and Fossil Tooth Enamel: Unveiling Aging-Induced Components
Authors: Mammadov Sahib
Published: April 2024

This study involves comparing EPR signals from three-year-old modern cow tooth enamel with the spectra of fossil tooth enamel exposed to natural background radiation over an extended period. The EPR spectrum of the significantly aged fossil tooth enamel displays additional components absent in the EPR spectra of the modern tooth enamel. Specifically, the septet signal associated with isopropyl (or alanine) radicals is not observed in the EPR signals of modern tooth enamel when irradiated up to 1.3 kGy. It is hypothesized that the isopropyl radicals present in fossil tooth enamel are not a result of radiation but rather stem from the natural breakdown of organic components due to the aging process. This characteristic is proposed as a dependable tool for authenticating tooth samples.
Modeling the Temperature Dependence of Shubnikov-De Haas Oscillations in Light-Induced Nanostructured Semiconductors
Authors: Erkaboev Ulugbek I. , Rakhimov Rustamjon G. , Mirzaev Jasurbek I. , Sayidov Nozimjon A. , Negmatov Ulugbek M.
Published: April 2024

In this work, the influence of light on the temperature dependence of transverse magnetoresistance oscillations is studied. A generalized mathematical expression that calculates the temperature and light dependence of the quasi-Fermi levels of small-scale p-type semiconductor structures in a quantizing magnetic field is derived. New analytical expressions have been found to represent the temperature dependence of transverse differential magnetoresistance oscillations in dark and light situations, taking into account the effect of light on the oscillations of the Fermi energy of small-scale semiconductor structures. A mathematical model has been developed that determines the light dependence of the second-order derivative of the transverse magnetoresistance oscillations of p‑type semiconductors with quantum wells by magnetic field induction. A new theory is proposed, which explains the reasons for the significant shift of the differential magnetoresistance oscillations along the vertical axis measured in the experiment for dark and light conditions.
An experimental investigation to determine the failure load of optimal hammer head pier cap and interpolate using univariate splines machine learning algorithm
Authors: Chandrasekhar K. N. V. , C. Sai Ankitha Varma , D. Indu Reddy , Eshwari D. , Venkatsai G. , Dhanush N. , V. Niranjana Chary , Samyuktha C. , Bharathi M. , P. Arun Kumar
Published: April 2024

The application of structural optimisation is fast changing the thinking of Design Engineers. With the rapid development in high strength concrete and other materials which can resist higher loads, the task of reducing the weight of the structure can be addressed with ease. The present study is an application of topology optimisation of continuum structures. The design domain is modelled using first order basis splines and optimisation is performed using optimality criteria minimising strain energy as the objective function. A model pier cap is chosen with the standard dimensions of 3 feet x 9 in x 4 in. The size and location of openings are determined using topology optimisation and drawn in AutoCAD® software. The casting is done using concrete with different percentages of replacement of cement and fine aggregate. Cement is partially replaced using Alcofine and fine aggregate is partially replaced using waste foundry sand. The foundry sand is an industrial waste obtained from the foundry industry located at Balanagar, Hyderabad. Four specimen beams are cast and tested in the laboratory. Steel fibres are used to care for the tensile stresses produced within the beam. The analysis done here can be applied to any material other than concrete as well. The failure load is determined in the laboratory for each sample. The interpolation of failure load is done using python code and run on Anaconda Jupyter ® platform to determine the value of failure load for any percentage of replacement between 0 to 10%.
Experimental investigation on the influence of recycled aggregate on the durability and mechanical properties of concrete
Authors: Akshay Kumar Jain
Published: April 2024

Recycled aggregate refers to crushed concrete, mortar, bricks, or asphalt derived from construction debris and repurposed in other building projects. It is obtained by crushing demolished waste to reclaim the aggregate. Over the past few decades, the abundance of Construction and Demolition Waste (C&DW) has increased significantly, leading the concrete industry to incorporate it, thereby reducing the cost of aggregates. The use of C&D waste in construction not only decreases carbon emissions but also facilitates the expansion of the concrete industry without causing harm to the environment. The objective of this study is to analyze the mechanical properties such as compressive strength, splitting tensile strength, flexural strength, and durability properties such as resistance to chloride, carbonation, freeze, and thaw of concrete utilizing recycled aggregate. It is observed that the mechanical and durability behavior of Recycled Aggregate Concrete (RAC) is inferior to that of standard concrete. However, by employing different admixtures and mixing approaches, the desired properties can be achieved. Furthermore, the study indicates that the improvement of mineral admixtures contributes more to enhancing the performance of recycled aggregate than it does to the characteristics of natural aggregate.
Planning the introduction of IPv6 in NATO
Authors: Goode Robert
Published: April 2024

The NATO wide area network provides secure IP services to NATO commands and agencies, and offers information exchange gateways to nations and coalition operations. The IP services support the NATO-wide deployment of core automated information systems (AIS), and the placement of specific functional area services (e.g., intelligence, logistics, C2IS for the services, etc.) at commands. To maintain and improve interoperability within NATO and with partners, NATO will transition from version four of the Internet Protocol (IPv4) to version six (IPv6). The transition to IPv6 will involve the IP network, the information exchange gateways, the core AIS, the functional area services, and the supporting CIS infrastructure. The IPv6 naming and addressing plan being developed supports the NATO command structure and interoperability with NATO partners. The critical issue in the planning process is to support the incremental introduction of IPv6 whilst maintaining network security and reliable interworking with existing IPv4 systems and limiting increases in operations and maintenance costs. To minimise costs and maximise effectiveness NATO is planning the transition in a timescale that is commensurate with commercial adoption in NATO countries, the technology refreshment points for major systems, and the availability of IPv6 security components. New NATO projects will prepare for the transition by detailing their IPv6 upgrade path and procuring dual stack (IPv4 and IPv6) equipment. NATO will develop and adopt standardised approaches for IPv6 protocols and network design.
Preface
Authors: Pacut Andrzej
Published: April 2024

Preface
Design and Implementation of an Embedded System for Ambulatory Cardiac Monitoring
Authors: Hassan El Mimouni El , Karim Mohammed
Published: April 2024

Cardiac monitoring in the environment of the subject is one of the major fields of telemedicine. In this paper we present a prototype of embedded system for acquisition, storage, display on LCD or PC and transfer via GSM alarm warning in case of arrhythmias, which allows a great opportunity for rapid intervention of the physician. In terms of hardware, we have designed and implemented our system with a modular approach to facilitate development and debugging. Thus the system comprises three modules: analog module, digital module microcontroller-based for certain pretreatment, and a GSM communication module. Of course, there is appropriate software behind the material described. The system has the following features: low cost, ease to implement and versatility.
Video Transmission Using Network Coding
Authors: LópezFuentes Francisco de As´ıs , Medina-Cabrera Cesar
Published: April 2024

Network coding is a new technique in the field of information theory and coding theory. This emerging technique offers great benefits in the communication networks such as increased throughput and energy savings. In this paper, we evaluate network coding for video transmission scenarios. In these scenarios, the source nodes encode the video packets, while the intermediate nodes implement network coding before forwarding the encoded packets to the end nodes. Finally, the end nodes decode the received packets in order to recovery the original video. H.264/MPEG-4 AVC is used as the video compression standard in this work. We have used the network simulator (NS-2) for our simulations. Our results show that network coding improves the system throughput, reduces the packet loss and improves the video quality in the end nodes.
The Application of Neural Networks to the Process of Gaining and Consolidating the Knowledge
Authors: Plichta Anna
Published: April 2024

The e-learning course is one of the most efficient and promising didactic policies. It must be grounded on the revision because it was proved that it enhances the longterm memory. However, human mind is not a uniform phenomenon. Each man memorizes and learns in a different manner. The purpose of the intelligent e-learning system presented in this paper is to teach orthography and this system is based on the multilayer neural network. Such structure enables a learner to adjust the crucial period between revisions to personal learning habits and policy.
Auction Models Supporting End-to-End Connection Trading
Authors: Kołtyś Kamil , Pieńkosz Krzysztof , Toczyłowski Eugeniusz
Published: April 2024

The paper concerns bandwidth allocation problem on the telecommunication market where there are many sellers and buyers. Sellers offer the bandwidth of telecommunication links. Buyers are interested in the purchase of the bandwidth of several links that makes up an end-to-end connection between two nodes of telecommunication network. We analyze three auction models supporting such a bandwidth exchange: NSP (network second price), BCBT (model for balancing communication bandwidth trading) and BCBT-CG which is a modification of BCBT that applies column generation technique. All of these models concern divisible network resources, treat bandwidth of telecommunication links as an elementary commodity offered for sale, and allow for purchasing bandwidth along multiple paths joining two telecommunication nodes. All of them also aim at maximizing the social welfare. Considered auction models have been compared in the respect of economic and computational efficiency. Experimental studies have been performed on several test instances based on the SNDlib library data sets.
Analysis and Modeling of Domain Registration Process
Authors: Arabas Piotr , Jaskóła Przemysław , Kamola Mariusz , Karpowicz Michał
Published: April 2024

The paper presents analysis of the domain name reservation process for the polish .pl domain. Two models of various time scale are constructed and finally combined to build long range high resolution model. The results of prediction are verified using real data.
Diffusion in Networks
Authors: Kasprzyk Rafał
Published: April 2024

In this paper a concept of method and its application examining a dynamic of diffusion processes in networks is considered. Presented method was used as a core framework for system CARE (Creative Application to Remedy Epidemics).
Compact Broadband Rat-Race Coupler in Multilayer Technology Designed with the Use of Artificial Right- and Left-Handed Transmission Lines
Authors: Kołodziej Jacek , Wincza Krzysztof , Staszek Kamil , Gruszczyński Sławomir
Published: April 2024

The paper presents a compact broadband rat-race coupler for the first time designed and realized in a mul- tilayer microstrip technology. To achieve both broad operational bandwidth and a compact size the 270◦ transmission line of a conventional rat-race, coupler has been replaced by a –90◦ left-handed transmission line realized with the use of a quasi-lumped element technique. Moreover, to achieve better compactness of the resulting coupler, all 90◦ right-handed transmission lines have been realized with the use of the same technique. It has been also proved that simple LC approximation of a left-handed transmission line can be successfully used for the design. Moreover, it has been shown that when appropriately chosen, the multilayer dielectric structure allows for realization of structures designed with the use of this simple approximation, for both right-handed and left-handed transmission lines, without loosing too much of a performance.
Model of User Access Control to Virtual Machines Based on RT-Family Trust Management Language with Temporal Validity Constraints – Practical Application
Authors: Lasota Krzysztof , Kozakiewicz Adam
Published: April 2024

The paper presents an application of an RT-family trust management language as a basis for an access control model. The discussion concerns a secure workstation running multiple virtual machines used to process sensitive information from multiple security domains, providing strict separation of the domains. The users may act in several different roles, with different access rights. The inference mechanisms of the language are used to translate credentials allowing users to access different functional domains, and assigning virtual machines to these domains into clear rules, regulating the rights of a particular user to a particular machine, taking into account different periods of validity of different credentials. The paper also describes a prototype implementation of the model.
Cryptographic Protection of Removable Media with a USB Interface for Secure Workstation for Special Applications
Authors: Chudzikiewicz Jan , Furtak Janusz
Published: April 2024

This paper describes one of the essential elements of Secure Workstation for Special Applications (SWSA) to cryptographic protection of removable storage devices with USB interface. SWSA is a system designed to process data classified to different security domains in which the multilevel security is used. The described method for protecting data on removable Flash RAM protects data against unauthorized access in systems processing the data, belonging to different security domains (with different classification levels) in which channel the flow of data must be strictly controlled. Only user authenticated by the SWSA can use the removable medium in the system, and the data stored on such media can be read only by an authorized user by the SWSA. Thissolution uses both symmetric and asymmetric encryption algorithms. The following procedures are presented: creating protected a file (encryption), generating signatures for the file and reading (decryption) the file. Selected elements of the protection systems implementation of removable Flash RAM and the mechanisms used in implementation the Windows have been described.
Drive Encryption and Secure Login to a Secure Workstation for Special Applications
Authors: Małowidzki Marek , Dalecki Tomasz , Mazur Michał
Published: April 2024

We discuss the problem of a secure login to a virtualized workstation. For increased security, the workstation’s hard drive is encrypted. During the startup, a decryption password to the drive must be entered by a user. We propose a solution that involves mutual authentication between the workstation and the user and ensures the password may be entered securely.
Who is Asking and for What: WHOIS Traffic Analysis
Authors: Kamola Mariusz
Published: April 2024

The paper presents analysis of WHOIS requests for 13-month period. Both requestor address and the domain name being requested are analyzed, showing that WHOIS traffic can be roughly classified into systematic scanning of domain names and individual low-volume activity, mostly targeting very popular names. The comparison of requested names with standard dictionary entries reveals typical mutations for registered names, and mutations performed by scanning automata. As most popular names in WHOIS coincide with standard top website ranks, the ways of utilizing WHOIS data for the benefit of Internet community as a whole, are proposed.
Hidden Context Influence on Pattern Recognition
Authors: Kulikowski Juliusz L.
Published: April 2024

The influence of hidden additional information concerning the circumstances of input data acquisition on the quality of decisions based on the data is considered. An analogue to the intuition influencing natural decision making is indicated. The problem of contextual information in decision making based on Bayes rule, on reference data sets in various applications as well as of scene analysis by numerous examples is illustrated.
Diversity of Temporal and Territorial Social Penetration Rates of Information Technology in Europe
Authors: Ziewiec Beata
Published: April 2024

This paper presents the diversity of social penetration rates of information and communication technologies (ICT) among selected European countries according to European statistics on diverse ICT indicators. The data considered cover the 2006–2010 time range and was obtained from the Eurostat portal. The scope of the study selected EU countries – Belgium, Germany, France, Finland, Sweden, Bulgaria, Czech Republic, Poland, Slovenia, Spain. The following ICT indicators were analyzed: percentage of households or corporations with broadband access to the Internet (HHBAI), percentage of individuals who are regularly using the Internet (IRUI), percentage of individuals who ordered goods or services over the Internet (IOGSI). These indicators of ICT penetration rate in the countries examined were analyzed in terms of the following aspects: forecasting (estimates until the year 2035) , maximum speed of change of these indicators (the pace of social penetration of information technology), delays or advances (in years) as compared to the averages in EU. The results are presented in tables and graphs. General conclusions and directions of future research are indicated at the end of the paper.
Preface
Authors: Borzycki Krzysztof
Published: April 2024

Preface
Evaluation of Potential Dangers of Mobile Telecommunication Frequencies and Modulations
Authors: Bamisaye Ayodeji James
Published: April 2024

Mobile Telecommunication is one of the fastest growing technologies in the world. The effects of its high frequencies and complex modulations to the exposed population are considered in this paper. Experimental studies examining a variety of effects on all levels of the organism, ranging from effects on single cells to effects which manifest themselves as reactions of the entire body, there have been a number of epidemiological studies in order to establish the possible causal correlations between higher exposures to HF EMFs. Recommendations on the reduction of the effects of EMFs of Mobile Telecommunication on humans was presented.
Preface
Authors: Czachórski Tadeusz , Nowak Mateusz
Published: April 2024

Preface
Analysis of the System with Vacations under Poissonian Input Stream and Constant Service Times
Authors: Sosnowski Maciej , Burakowski Wojciech
Published: April 2024

In the paper approximate formulas for the mean waiting times and the buffer dimensioning in the system with vacations fed by the stream of Poissonian type with constant service times is shown. Furthermore, in the considered system the time intervals of the availability/notavailability of the service are constant and are run alternately according to the assumed cycle. More precisely, presented approach begin with derivation of the mean waiting times and, on the basis of this, the required buffer size for guaranteeing the losses less than predefined value is estimated. The accuracy of the presented analytical formulas is on a satisfactory level. The formulas were used for the System IIP dimensioning.
Single Hysteresis Model for Limited-availability Group with BPP Traffic
Authors: Sobieraj Maciej , Stasiak Maciej , Weissenberg Joanna , Zwierzykowski Piotr
Published: April 2024

This paper presents a single hysteresis model for limited-availability group that are offered Erlang, Engset and Pascal traffic streams. The occupancy distribution in the system is approximated by a weighted sum of occupancy distributions in multi-threshold systems. Distribution weights are obtained on the basis of a specially constructed Markovian switching process. The results of the calculations of radio interfaces in which the single hysteresis mechanism has been implemented are compared with the results of the simulation experiments. The study demonstrates high accuracy of the proposed model.
Assessing Coastal Sustainability: A Bayesian Approach for Modeling and Estimating a Global Index for Measuring Risk
Authors: Vitabile Salvatore , Farruggia Alfonso , Pernice Giuseppe , Gaglio Salvatore
Published: April 2024

Integrated Coastal Zone Management is an emerging research area. The aim is to provide a global view of different and heterogeneous aspects interacting in a geographical area. Decision Support Systems, integrating Computational Intelligence methods, can be successfully used to estimate useful anthropic and environmental indexes. Bayesian Networks have been widely used in the environmental science domain. In this paper a Bayesian model for estimating the Sustainable Coastal Index is presented. The designed Bayesian Network consists of 17 nodes, hierarchically organized in 4 layers. The first layer is initialized with the season and the physiographic region information. In the second layer, the first-order indexes, depending on raw data, of physiographic regions are computed. The third layer estimates the second-order indexes of the analyzed physiographic regions. In the fourth layer, the global Sustainable Coastal Index is inferred. Processed data refers to 13 physiographic regions in the Province of Trapani, western Sicily, Italy. Gathered data describes the environmental information, the agricultural, fisheries, and economical behaviors of the local population and land. The Bayesian Network was trained and tested using a real dataset acquired between 2000 and 2006. The developed system presents interesting results.
Adaptive Distributed Data Storage for Context-Aware Applications
Authors: Burceanu Elena , Dobre Ciprian , Cristea Valentin
Published: April 2024

Context-aware computing is a paradigm that relies on the active use of information coming from a variety of sources, ranging from smartphones to sensors. The paradigm usually leads to storing large volumes of data that need to be processed to derive higher-level context information. The paper presents a cloud-based storage layer for managing sensitive context data. To handle the storage and aggregation of context data for context-aware applications, Clouds are perfect candidates. But a Cloud platform for context-aware computing needs to cope with several requirements: high concurrent access (all data needs to be available to potentially a large number of users), mobility support (such platform should actively use the caches on mobile devices whenever possible, but also cope with storage size limitations), real-time access guarantees – local caches should be located closer to the end-user whenever possible, and persistency (for traceability, a history of the context data should remain available). BlobSeer, a framework for Cloud data storage, is a perfect candidate for storing context data for large-scale applications. It offers capabilities such as persistency, concurrency and support for flexible storage schema requirement. On top of BlobSeer, Context Aware Framework is designed as an extension that offers context-aware data management to higherlevel applications, and enables scalable high-throughput under high-concurrency. On a logical level, the most important capabilities offered by Context Aware Framework are transparency, support for mobility, real-time guarantees and support for access based on meta-information. On the physical layer, the most important capability is persistent Cloud storage.
Preface
Authors: Kula Sławomir
Published: April 2024

Preface
JOB ENGAGEMENT AND WORK LIFE BALANCE AS INTERVENING VARIABELS BETWEEN JOB STRESS AND SUPERVISOR SUPPORTIVE ON TURNOVER INTENTION AMONG COMMERCIAL LOCAL TELEVISION EMPLOYEES IN SEMARANG CITY
Authors: Julianto Agung , Amron Amron , Febriana Artha
Published: April 2024

Purpose: The aim of this study was to find out the impact of work stress and supervisor support on the turnover intention mediated by job engagement and work life balance. The research was conducted on a commercial local television station in Semarang City.
 
Theoretical Framework: The Conservation of Resources (COR) theory posits that when individuals encounter losses or threats to their resources, they undergo discomfort or stress and make efforts to minimize losses when they arise (Ahn & Chaoyu, 2019).
 
Design/Methodology/Approach: The research utilized quantitative methods for its execution. The study's population and sample consisted of the families of 104 permanent employees who participated as respondents. Data collection was carried out through the distribution of printed questionnaires. Analysis of the study's data was conducted using SmartPLS 3.0 software, with 101 out of the 104 surveys distributed being returned.
 
Findings: The findings indicate that intentions to leave a job are significantly positively impacted by job stress. It has also been discovered that supervisor assistance significantly reduces the intention to leave. The association between work stress and supervisor support for intention to leave is mediated by work-life balance. It has been discovered that the supervisor's support connection with regard to turnover intention is not mediated by job engagement.
 
Research, Practical & Social Implications: The study has limited research objects limited area of Semarang City.
 
Originality/Value: The value of the study is The impact of supervisor support and work stress on turnover intention in the television industry has not been extensively studied. As a result, by offering a fresh viewpoint on the relationship between job stress and supervisor support and turnover intention, this research adds to the body of existing literature.
Research on Psychological Duality: Retrospect and Prospect
Authors: Sun Haiqiang
Published: April 2024

The theory of dualism (not to be confused with Plato’s dualism) is a relatively new theory in the field ofpsychology, which provides new ideas and methods for understanding and solving problems related to human psychology. This theory finds application in many fields and has far-reaching influence. This essay provides an overview of the theory of dualism followed by an analysis of its connotations, characteristics, and significance. Subsequently, its development at home and abroad is described. Finally, its main applications and prospects are outlined, hoping to provide references and insights for the further development of this field.
Study on the Innovative Application of Zhuang Brocade Dress Patterns in Women’s Products
Authors: Su Yuanxin , Yang Zehui
Published: April 2024

As one of the highly representative national handicrafts in the Guangxi Zhuang region, Zhuang brocade is one of the famous brocade styles in China. This study integrates the Zhuang brocade pattern elements into the packaging design of modern women’s products and uses a large number of Zhuang brocade pattern elements. Starting from the pattern, color, theme, and other aspects, the Zhuang brocade pattern elements are incorporated into the graphic composition for the deconstruction of the design. To establish a new approach to the development of national costume culture, this paper suggested exploring its derivatives and redesigning graphic reconstruction methods. By integrating the Zhuang brocade pattern elements with modern women’s product packaging design styles, the connotation value of women’s product design can be enhanced. This also facilitates the preservation of the Zhuang brocade national costume culture and provides new ideas for modern innovative design.
Analysis of CJ Brand Promotion Strategy Based on Porter’s Five Forces Framework
Authors: Liu Bohan , Li Yuying , Yu Ping , Zhou Jiayue , Fang Kang
Published: April 2024

CJ Health Technology Co., Ltd. is a group enterprise with manufacturing, marketing, and exporting of fitnessequipment as its main business, with industry-leading manufacturing technology and a long-term and stable overseas customer supply chain. However, the market channel in the process of developing the domestic market is stagnant due to low brand awareness. This paper uses the Porter five-force framework to explore the marketing strategy suitable for CJ brand promotion. Based on the analysis of the bargaining power of existing and potential competitors, buyers and suppliers, and alternative commodities in the fitness equipment industry, a specific implementation plan is proposed, which can improve brand awareness through the construction and maintenance of online platforms, opening offline stores in domestic market and sponsoring sports events.
Kauzalita a kontingentní sebedeterminace?
Authors: Sousedik Stanislav
Published: April 2024

Petr Dvořák hájí ve své knize Kauzalita činitele libertariánské pojetí svobody lidské vůle. Vůli považuje za duševní schopnost člověka a její svobodu spatřuje v možnosti její sebedeterminace. Tuto tezi autor tohoto příspěvku kritizuje. Dokazuje, že sebedeterminující schopnost je contradictio in terminis. Libertariánsky pojatá svobodná vůle je možná jen, pokud není schopností. Takovou vůlí je pouze vůle Boží (za předpokladu, že Bůh existuje). Autor připojuje historické upozornění, že autorem omylu zaměňujícího lidskou vůli s Boží je renezanční teolog Ludvík Molina, že k jeho stoupencům náležel i René Descartes.
Superinteligence a problém kontroly: Skutečný problém nebo pseudo-problém?
Authors: Malík Jaroslav
Published: April 2024

V tomto článku se zabývám konceptem SI (superinteligence) a s ní spojeným problémem kontroly. Podle určité skupiny teoretiků umělé inteligence stojíme na prahu události, která může radikálně změnit povahu technologického pokroku a lidské společnosti obecně. Touto událostí má být takzvaná technologická singularita, která je často spojována se vznikem první větší než lidské inteligence. Lidé jako Nick Bostrom varují před nebezpečím, které pro nás vznik SI znamená a upozorňují, že musíme co nejdříve najít metody kontroly této inteligence. Podle Bostroma a dalších nebezpečí SI vyplývá z její povahy. Já na jedné straně posuzuji, jak SI může vzniknout, a na druhé straně soudím smysluplnost problému kontroly. Vznik SI vyplývá ze vzniku umělé inteligence. Proto soustřeďuji podstatnou část textu argumentům pro její vznik. Ukazují jak se Bostrom a další nechávají unést jedním problematickým argumentem. Dále podrobuji jejich pozici klasické kritice umělé inteligence. Prezentuji, jak stále lpí na problematických domněnkách svých předchůdců. Zejména soustřeďuji svoji kritiku na tvrzení, že SI bude mít jeden konečný cíl, který bude interpretovat. Toto tvrzení označuji jako antitetické, a to představě, že SI bude obecnou inteligencí. V závěru z mojí argumentace vyvozuji, že problém kontroly zaměňuje dva jiné různé problémy „kontroly.“
Vybrané problémy argumentačných schém v pragma-dialektickom prístupe k argumentácii
Authors: Kollárik Tomáš
Published: April 2024

V práci sa zaoberám kritickou expozíciou argumentačných schém v kontexte pragma-dialektického prístupu k argumentácii. Nadväzujem pritom na prácu Hitchcocka a Wagemansa (2011), ktorí sa sústredili najmä na problémy súvisiace s typológiou argumentačných schém v pragma-dialektike. Pozorovania Hitchcocka a Wagemansa sú v priebehu výkladu kriticky hodnotené, prípadne upravené. Časť kritiky, ktorú v práci uvádzam, súvisí s tým, že niektoré dôležité aspekty argumentačných schém sú v rôznych pragma-dialektických publikáciách prezentované odlišne bez toho, aby sa odlišnosť akokoľvek komentovala, alebo zdôvodnila. Existencia takýchto zdôvodnení nie je pritom iba znakom, ale aj nevyhnutnou podmienkou toho, aby sme akúkoľvek zmenu mohli nazývať pokrokom v teórii. Posledná časť práce je zameraná na problémy týkajúce sa hodnotenia argumentácie v pragma-dialektickom prístupe. Hoci článok prináša vlastné pozitívne návrhy, dôraz a celkový zámer spočíva predovšetkým na expozícii nedostatkov súčasného stavu pragma-dialektickej koncepcie argumentačných schém.
Kľúčové slová: argumentačné schémy, kritické otázky, pragma-dialektický prístup k argumentácii, hodnotenie argumentov
Dummettʼs Anti-Realism about Mathematical Statements
Authors: Štěpánek Jan
Published: April 2024

Just as the accuracy of scientific theories is best tested in extreme physical conditions, it is advisable to verify the accuracy of a recognized conception of language on its extreme parts. Mathematical statements meet this role, thanks to the notion of truth and proof. Michael Dummett’s anti-realism is an enterprise that has attempted on this basis to question the notion of the functioning of language-based primarily on the principle of bivalence, the truth-condition theory of meaning, and the notion that the speaker must be able to demonstrate his knowledge of meaning publicly. In common language practice, one can observe assertions that we can neither verify nor refute in principle. On these so-called undecidable statements, Dummett tried to show that if we apply the traditional description to them, we inevitably reach paradoxical conclusions. Mathematical statements referring to an infinite number may be examples of these assertions. In the submitted paper, I will present Dummett’s position resulting primarily in a manifestation and acquisition argument, according to which it should not be possible to understand undecidable statements at all. In conclusion, however, I will show that his intention – despite many valuable comments – fails, i.e. that there is a way to avoid both arguments while preserving the realistic description of the language in general.
Key words: anti-realism, mathematical statements, meaning, Michael Dummett, truth, truth-condition theory of meaning
Iracionální interpretace
Authors: Dvořáková Helena
Published: April 2024

Studie je zaměřena na proces interpretace textu, přičemž sleduje jev nazvaný „iracionální interpretace“. Protiklad racionální – iracionální chápe na základě konceptu Donalda Davidsona, a vychází tedy více z filosofie jazyka a mysli nežli z psychologie. Iracionalita interpretace spočívá v nesoudržnosti přesvědčení interpreta, tedy v narušení logických vazeb mezi jeho jednotlivými přesvědčeními. Na konkrétních příkladech je ukázáno, jak k takovému stavu mysli interpretujícího subjektu může dojít a jaký vliv má na porozumění celému textu. Pojem iracionální interpretace je uvažován na pozadí celé sítě vztahů – interpreta k textu, k autorovi, ke kontextu a k tradici. Tyto vztahy jsou zachyceny pomocí několika schémat zakládajících se na Davidsonových modelech triangulace. Tyto modely ovšem podstatným způsobem modifikuje.
Klíčová slova: interpretace – iracionalita – přesvědčení – vnitřní nesoudržnost – triangulace
Opravdová a falešná sláva v rozpravách Fridricha Velikého o hanopisech a posměváčcích
Authors: Koumar Jan
Published: April 2024

Tento text se zabývá rozborem pojmu sláva, jak je k nalezení ve filosofických pracích pruského krále Fridricha Velikého (1712-1786), jmenovitě pak v Rozpravě o posměváčcích (Discours sur les satiriques) a Rozpravě o hanopisech (Discours sur les libelles) z roku 1759. Fridrich v obou pracích odlišuje falešnou a opravdovou slávu, přičemž falešná sláva je pouhou pozorností davů bez hlubší podstaty, jde o slávu celebrit. Fridrich ji popisuje jako slávu Herostratovu, výjimečně pro ni používá slovo célébrité. Pravá sláva je pak popisována slovem gloire a jde o etickou kategorii, o slávu, která je motorem činnosti velkých lidí a jejímž soudcem bude historie. Obě slávy jsou sice v obou rozpravách cílem pisatelů satiry a hanopisů, avšak ti místo pravé slávy dosahují pouhé známosti svého jména, pouhé pozornosti davů. Satira a hanopisy jsou v rozpravách odsouzeny proto, že nedosahují pravé slávy, o kterou by měly usilovat, ale pouze slávy falešné, jež je však eticky bezcenná. 
Klíčová slova: sláva, Fridrich Veliký, hanopisy, filosofie osvícenství, satira
Penyediaan Alat Penghancur Sampah Organik agar Maggot Lebih Maksimal Mengolah Sampah Menjadi Pupuk Kompos
Authors: Chamidy Harita Nurwahyu , Astor Yackob , Keryanti Keryanti , Min Joe Lian , Djatnika Tjetjep , Pudin Apip , Amalia Dewi
Published: April 2024

Longsornya Tempat Pembuangan Akhir (TPA) Sarimukti membuat tumpukan sampah di Tempat Pembuangan Sampah (TPS) semakin menggunung dan munculnya TPS liar yang dapat mencemari lingkungan. Alternatif pengolahan sampah organik yaitu dengan memanfaatkan maggot. Jika tersedia sarana pengolahan sampah yang lengkap dan budidaya Maggot dilakukan secara benar, maka berpotensi dapat mengatasi permasalahan sampah dan menghasilkan keuntungan. Mitra telah mencoba melakukan pengolahan sampah organik menggunakan Maggot. Namun, masih ada permasalahan yang terjadi pada Mitra Pengabdian kepada Masyarakat (PkM) yaitu tidak adanya alat penghancur sampah sehingga tidak dapat diolah maksimal oleh Maggot. Kegiatan PkM ini yaitu melakukan sosialisasi mengajak warga untuk memilah sampah organik dan anorganik di rumah masing-masing, kemudian mendistribusikan sampah ke lokasi pengolahan, dan pembuatan alat penghancur sampah organik. Manfaat kegiatan PkM bagi Mitra adalah memberikan kontribusi berupa teknologi peralatan penghancur sampah dan bertambah banyak masyarakat yang berkontribusi dalam pengelolaan ini sebagai solusi pengolahan sampah yang efektif, efisien, murah, dan dapat memberikan keuntungan bersama.
Upaya Membangun Budaya Kerja yang Kuat guna Meningkatkan Produktivitas Pegawai DKLH Provinsi Bali
Authors: Cahyani Kadek Nilam , Dewi Putu Purnama
Published: April 2024

Dalam suatu instansi baik itu pemerintahan maupun perusahaan swasta budaya kerja menjadi satu hal penting yang menjadi perhatian khusus. Di mana budaya kerja inilah yang akan menjadi penentu seperti apa tingkat produktivitas pegawai dalam melakukan pekerjaannya. Pada Kantor Dinas Kehutanan dan Lingkungan Hidup Provinsi Bali Budaya kerja yang kurang ketat menyebabkan pegawai pada bidang Umum dan Kepegawaian menjadi terlalu santai ketika bekerja bahkan tidak jarang ketika bekerja kebanyakan pegawai kurang disiplin seperti terlalu banyak mengobrol, datang tidak tepat waktu dan beristirahat di luar jam istirahat. Kurang ketatnya budaya kerja ini mempengaruhi prestasi dan keefektifan kerja karyawan, yang mana apabila budaya kerja lemah cenderung akan membuat pegawai kurang produktif sehingga pekerjaan yang dikerjakan tidak dapat diselesaikan dengan baik. Untuk memperbaiki permasalahan ini diharapkan para pemimpin bidang bisa memperbaiki budaya kerja dengan cara menetapkan beberapa aturan yang tidak bisa dilanggar apabila dilanggar sanksi tertentu dapat dikenakan, hal ini dapat dilakukan sebagai langkah awal membentuk budaya kerja yang lebih kuat.