bluuebunny/crossref_metadata_2025 huggingface dataset:
Spontaneous Globe Subluxation in a Neonate: A Case Report with Literature Review
Authors:   Head of Oculoplasty & Ocular Oncology, Chittagong Eye Infirmary, Chattogram, Bangladesh, Roy Soma Rani , Hoque Md. Asrarul ,   Chittagong Eye Infirmary, Chattogram, Bangladesh
Published: December 2022

Globe subluxation is a medical emergency and a frightening condition. The spontaneous subluxation is the rarest of the subluxations, with fewer than 40 cases reported to date. This condition is extremely rare in children, with the most recent reported age being 8 months. However, Crouzon syndrome in infants is also less reported. Here we report a case of neonatal Crouzon syndrome with spontaneous globe subluxation and its surgical management.
Competent Authority in Pension Proceedings in the Context of the Concept of ‘Official’ Under Administrative Law
Authors: Dimitrova Darina
Published: December 2022

The right to social security and social assistance is constitutionally established. Issues related to pension proceedings are of utmost importance, as pensions are the most important insurance payment for persons who have lost their earnings or means of support. Given this, the resolution of issues arising in the course of pension proceedings are of great importance to both practice and doctrine. The purpose of this article is to clarify who is the competent authority in pension proceedings in the context of the concept of ‘official’ under administrative law. On the basis of the analysis of the relevant norms, conclusions and generalizations are drawn concerning the applicable legal framework.
STUDY OF THE BEARING FRICTION INSIDE ON A MOBILE COUPLING JOINT
Authors:   “Transilvania” University of Brasov, Lates Mihai Tiberiu , Gavrila Cornel Catalin ,   “Transilvania” University of Brasov
Published: December 2022

The mobile couplings are used in movement and torque transmission between two main shafts usually and have a wide application in transportation and machining systems. These mobile coupling must undertake the shafts misalignments that could appear, usually in the transversal plane and in the longitudinal plane. The friction which appears in coupling’s joints between the involved parts has an important influence on their dynamic behaviour, wear and lifetime. A solution to reduce the friction inside the mobile coupling is to place bearings in joints. The paper presents some general aspects on mobile tripod couplings and following this, using the inside relative movement in joints between parts and corresponding adequate bearing, the friction coefficient is studied. There are considered two cases for the studied radial ball bearings: a sealed one and a non-sealed one. The measurements are accomplished by using a tribometer for different radial loadings and rotational speeds of the inner ring of the bearings. In the final part of the paper, the results present the exploitation conditions of the bearings which assure small frictional loses. According to the obtained results, in order to gain small frictional loses, the mobile tripod coupling with external contacts are suitable to be used in the case of high loads, with small influences on the frictional behaviour of the rotational speeds.
PSYCHO-ACOUSTIC ASSESSMENT OF VIOLINS WITH DIFFERENT ANATOMICAL FEATURES OF WOOD
Authors:   Transilvania University of Brasov, Mihalcica Mircea , Gliga Vasile Gheorghe ,   Transilvania University of Brasov, Campean Mihaela ,   Transilvania University of Brasov, Cretu Nicolae Constantin ,   Transilvania University of Brasov, Nauncef Alina Maria ,   Transilvania University of Brasov, Steigmann Rozina ,   National Institute of Research and Development for Technical Physics
Published: December 2022

In this paper, the manufacturing technologies of violins, followed by a study on the psycho-acoustic evaluation of violins with different anatomic structure of wood are presented. The evaluation was performed by music experts (performers, teachers, students) based on music auditions of excerpts recorded on the violins studied. The musical performance was performed by the same violinist, under the same conditions. Respondents rated five acoustic criteria. The statistic results showed that age, experience, gender influence the acoustic perception and also that the geometric characteristics of the violins produce different acoustic impressions.
Silesian University of Technology, Gliwice, Poland
Authors:   “Vasile Alecsandri” University of Bacau, Olaru Ionel
Published: December 2022

An efficient MQL system (Minimal Quantity Lubrification) ensures the proper cooling of the various moving parts, resulting in the cutting process on the machine tools. The introduction of MQL systems responds to the growing demand in the industry with a whole host of real benefits. The geometry of the nozzle influences the flow parameters of the coolant; these parameters can also be influenced by the nature of the fluid or liquids used. The nozzle of the cooling system has a convergent-divergent geometry, the dispersion of the fluid in the areas to be processed being better. A high temperature in the working area above a certain critical value can be harmful to the quality of the surface and can have some negative influences on the life of the cutting tool. MQL-type cooling systems combine different cooling fluids to achieve better cooling and lubrication of the cutting area. Following the simulations performed, the coolant speeds depend on the length of the analyzed nozzle, we can see that the speed has a lower value in the initial section of the nozzle which increases at the nozzle outlet. After exiting the convergence-divergence nozzle, the fluid jet velocity decreases in proportion to the fluid jet length, the simulation of these phenomena can optimize the geometry for the chosen purpose. The present paper aims to analyze the types of coolants and their correct choice, temperature control resulting from the cutting process is achieved due to the correct distribution of cooling fluids in the processing area, optimization can be achieved through computer simulation.
MONITORING AND DATA ACQUISITION FOR A CONSUMPTION SYSTEM BASED ON RENEWABLE ENERGIES
Authors:   Constanta Maritime University, Panaitescu Fanel-Viorel , Panaitescu Mariana ,   Constanta Maritime University, Juganaru Daniela-Elena ,   Constanta Maritime University
Published: December 2022

Within the HORESEC project, a combined wind-photovoltaic-motogenerator renewable energy system was developed at the Nautical Base of the Maritime University of Constanta (CMU). The system was entirely designed and built at CMU for the purpose of combined testing of on-grid and off-grid operation efficiency. In this paper the following aspects are presented: 1) the need to create a research centre on monitoring and use of solar and wind resources, through the project Holistic impact of renewable energy sources on the environment and climate-HORESEC in the context of supporting smart specialization in energy; 2) the purpose of the work is presentation of the structure of the system designed and built at CMU in order to test its efficiency, as well as the acquisition of data displayed on a portal for all parameters monitored by the system, at intervals of 5 minutes, or daily, or weekly, monthly or annually. The research consisted in: 1) the configuration of the system to be made for the off grid variant, which opted for a Li-Ion battery bank [2], with a nominal voltage of 55.5 VDC and working between 61.5 V and 45 V, with nominal storage capacity of 6.74 kWh and usable of 5.5 kWh; 2) programming of the measurement and data transmission systems on the web, as well as of the mobile measurement system with the possibility of data transmission to the PC with the sampling rate of minimum 1 month / sec and measurement time of maximum 30 days (Janitza system, SMA Energy meter, Fluke ammeter-voltmeter group + PC + adapter ). The obtained results consist in displaying on a portal all the parameters monitored by the created system, on intervals lasting 5 minutes, or daily, or weekly, monthly or annually (data reports), as well as the existing events in time. The created system has the advantage of increasing energy efficiency by using unconventional methods of storage and consumption management.
TOOLS FOR ANALYSING OPERATIONAL OPTIMIZATION IN A CONTAINER SHIP TERMINAL
Authors:   Constanta Maritime University, Panaitescu Mariana , Panaitescu Fanel-Viorel ,   Constanta Maritime University, Daineanu Robert Alexandru ,   Constanta Maritime University, Dinu Dumitru ,   Constanta Maritime University, Zus Mircea ,   Constanta Maritime University
Published: December 2022

: Placing the work in context: Containerization has made transportation cheaper, and this has changed the global economy and trade. The efficiency of a container terminal requires: a) high-performance equipment for high performance management; b) large area to facilitate the movement of handling equipment and placement of containers; c) good organization of its operation. The purpose of the work: The present paper aims to present operating tools in a container terminal, which will contribute to reducing operating times and possible human errors. Research, methodology: a) Analysis of container terminal design tool; b) Optimization, automation and integration of technological equipment in containerized shipping. Results: a) structure and calculus of the model of the container ship terminal-case study new terminal Port Agigea-Constanta; b) different scenarios of different parts of the terminal- handling operation, the characteristics of quay crane and the characteristics of different equipment types for transferring container between quay-yard and inside the yard; c) selecting the best scenario that would lead to short operating times and to the exclusion of human errors that can lead to accidents at work. Conclusions: The goal of the study is to find the tools for optimal design of the container ship terminal which includes more functionalities with reduced operational times and exclusions of human errors.
REAL TIME WAVE PARAMETERS MONITORING USING A FIXED COASTAL BUOY
Authors:   National Research and Development Institute for Marine Geology and Geoecology-GeoEcoMar - Energy Doctoral School, Polytechnic University, Radulescu Raluca , Panaitescu Fanel-Viorel ,   Constanta Maritime University, Panaitescu Mariana ,   Constanta Maritime University, Lazaroiu Gheorghe ,   Polytechnic University, Faculty of Energy
Published: December 2022

In order to identify the marine energy potential, the marine environment will be studied through EMSO-EUXINUS network part of EMSO ERIC Pan European Research Infrastructure operated starting with 2013. The most important part of the network is monitoring stations located offshore, including wave coastal buoy in the Black Sea which record also, in real time, wave parameters starting with 2013. The main goal of the wave coastal buoy is to record, in real time, the wave data including wave high and period, direction and speed of the water, water temperature and also meteorological information (wind speed and direction and air temperature). All coastal buoy sensors are managed by a customized low power datalloger, processing and communication system integrated in a stainless-steel cabinet in AISI216L suitable for long life stay in harsh environment and salty atmosphere. The same cabinet host rechargeable battery pack and charge regulat. All the data are recorded and stored on a local data-logger and transmitted to the onshore database, at each 5 minutes via 3G communications.
CYBERSECURITY STRATEGIES IN INDUSTRY 4.0
Authors:   Constanta Maritime University, Raicu Gabriel , Raicu Alexandra ,   Constanta Maritime University
Published: December 2022

Cybersecurity is now the one of the highest important part of the Industry 4.0 and to all the design and manufacturing companies. This paper presents new cybersecurity strategies in Industry 4.0, where current vulnerabilities and exploitation processes, possible attack vectors, attack, compromise, and performance indicators should be considered. Also, cyber risk in product lifecycle management is a very important aspect. This revealed authentication issues, unsecured communications, default deployment issues, susceptibility to physical attacks. For example, a successful cyberattack could bring subtle changes to the control parameters of a robot or of a manufacturing process. This can further change the robot's operating mode in an almost undetectable way, but instead alters the efficiency and integrity of the final product. By monitoring these behaviours, cataloguing indicators, and inspecting potential risks, we can determine how an attacker gains access to the network and predict the intent they had. We need well-trained staff in any enterprise to drastically reduce the risk of cyberattacks. For this reason, appropriate measures must be taken to solve these problems, and one of these is cybersecurity education. It is necessary to implement appropriate policies and risk reduction plans in the product lifecycle management to prevent possible cyber-attacks.
SHEAR STRUCTURAL RESPONSE OF A PROTOTYPE STRENGTHENING SYSTEM DESIGNED FOR STONE MASONRY PANELS
Authors:   ”Gheorghe Asachi” Technical University of Iasi, Spiridon Ionut , Isopescu Dorina Nicolina ,   ”Gheorghe Asachi” Technical University of Iasi, Ungureanu Dragos ,   ”Gheorghe Asachi” Technical University of Iasi, Taranu Nicolae ,   ”Gheorghe Asachi” Technical University of Iasi, Alupoae Sergiu ,   ”Gheorghe Asachi” Technical University of Iasi, Sbirlea Catalin ,   ”Gheorghe Asachi” Technical University of Iasi
Published: December 2022

This paper presents the set-up needed for an experimental study regarding the in-plane shear behaviour of stone masonry panels, strengthened with a prototype hemp reinforced mortar. Seven stone masonry panels will be designed and manufactured for this purpose: one unreinforced, three plastered on both sides and three plastered on a single side. The aim of this experimental study is to evaluate the effectiveness of the prototype hemp reinforced mortar in enhancing the shear strength and the displacement capacity of the stone masonry walls. In addition, the design and the manufacturing stages of the prototype hemp reinforced mortar have been carefully described, thus allowing an easy application of this TRM system on a large scale. Crucial aspects regarding the shear behaviour of stone masonry unstrengthen/strengthened walls, such as the quantification of the ultimate forces and displacements, the description of the dominant failure modes, and the characterization of the stress-strain state may be analysed by performing the envisaged experimental study based on the proposed set up.
"ACOUSTIC AND ELASTIC PROPERTIES OF WOOD FOR VIOLIN SOUND POST "
Authors:   Transilvania University of Brasov, Stanciu Mariana Domnica , Savin Adriana ,   National Institute of Research and Development for Technical Physics, Dobrescu Gabriel-Silviu ,   National Institute of Research and Development for Technical Physics
Published: December 2022

The sound post is a very important element in the acoustics of musical instruments with strings and bows. This paper presents the experimental investigations regarding the elastic and acoustic properties of the wood used to obtain the sound post. The speed of propagation of sound waves in wood and then the determination of the elastic properties in the longitudinal direction was measured on a number of 12 sound posts made from new and old resonance wood. It was found that the elastic and acoustic properties depend on the degree of aging of the wood. Thus, the longitudinal propagation speed is about 4% higher in samples of freshly processed wood compared to those of aged wood; the longitudinal modulus of elasticity is about 19% lower for aged wood samples.
CUSTOMISED INFILL PATERNS FOR STREGHTENED 3D PARTS
Authors:   ", Teodor Virgil Gabriel ,   Dunarea de Jos",   University of Galati, Craciun Razvan Sebastian ,   Dunarea de Jos University of Galati, Morosanu Georgiana-Alexandra ,   Dunarea de Jos University of Galati
Published: December 2022

The development of rapid prototyping technologies generates a strong concern for saving all types of materials while maintaining, or even increasing, the strength of 3d printed parts. One way to partially meet this requirement is to make models with a low degree of filling. However, the types of predefined filling structures, defined in the slicing programs, are relatively small in number, being based on repetitive patterns. In this paper it is proposed to make a specimen with a filling structure adapted to the expected stress that appear during operation. Model design can be done in any computer-aided design environment. The deformations of the modified specimen were compared with the deformations of some models with predefined filling structures, under the conditions of maintaining the same loads. This comparison allows to verify the strength of the specimen, under the conditions of using the same volume of material, compared to the models with predefined structure. In addition, conclusions can be drawn regarding the strength of various filling patterns and the time required to print the specimen. The favorable results create the premises of developing an algorithm that can allow the generation of some filling models optimized for different types of loads and eventually the possibility of applying the same concept of custom filling structure for other rapid prototyping technologies.
NOVEL AND RAPID DRYING CHARACTERIZATION TEST SUITABLE FOR THE BRICK AND TILE INDUSTRY
Authors:   “Institute for testing of materials”, Vasic Milos , Vasic Milica ,   “Institute for testing of materials”, Radojevic Zagorka ,   “Institute for testing of materials”
Published: December 2022

The industrial raw material compositions in brick or tile production are normally adapting from time to time with novel clays. The proper raw material change must be based on the reliable raw material characterization tests. Regardless to the fact that commonly used (Bigot, Muller-Biehl, Ratzenberger, Piltz, Hermansons, etc.) drying sensitivity criterions allow the comparison of different raw materials they are not related with the mineral composition and mechanical nature of clays. Besides these are time-demanding tests. The X-ray characterization of raw material is reliable only when orientated samples are prepared. In other cases, it is necessary to have additional characterization test such as thermo-differential (DTA) and thermo-gravimetric (TG) analysis in order to confirm the presence or absence of individual clay minerals. The quantity of the interlayer water content present in clays is in direct correlation with the mineralogical composition and the clay type. This effect can be easily qualified on the DTA/TG curves. This was a trigger for establishing the novel rapid drying sensitivity criteria. The analysis of different raw materials has confirmed that the moisture loss registered on TG curves at 2000C can be used as novel drying sensitivity criterion. This value is respectively for insensitive raw materials less than 2.0 while for highly sensitive one is larger than 2.80. The proposed method is very simple, rapid and reliable for the application in brick and tile industry. The second objective of this paper was to compare the results of the proposed method with the widely used Bigoth, Ratzenberg and Piltz tests. A good correlation was found.
"THERMOELASTIC DISPLACEMENT AND TEMPERATURE RISE IN A HALF-SPACE DUE TO A STEADY-STATE HEAT FLUX "
Authors:   Stefan cel Mare University of Suceava, Spinu Sergiu
Published: December 2022

Due to model complexity, classical contact mechanics theory assumes isothermal contact processes, involving bodies with uniform temperatures and no heat transmitted or generated through or near the contact interface. This paper addresses the problem of frictional heating in non-conforming or rough contacts by investigating the thermoelastic behaviour of asperities. The heat generated in a sliding contact by interfacial friction leads to thermoelastic distortion of the contact surface, further modifying contact parameters such as pressure, gap or temperature. The thermal expansion of the contacting bodies must therefore be accounted for when solving the contact problem. The thermoelastic displacement is computed with the aid of the half-space theory and of fundamental solutions for point sources of heat located at the free surface, derived in the literature of heat conduction in solids. The linearity of conduction equations encourages the use of superposition principle in the same way as for the elastic displacement. As the thermoelastic displacement is expressed mathematically as a convolution product, methods derived in contact mechanics for elastic displacement calculation are adapted to the heat conduction equations. The influence coefficients needed to efficiently compute the convolution products are derived, and the Discrete Convolution Fast Fourier Transform technique is applied to improve the algorithm computational efficiency. A similar method is then advanced for the temperature rise on the contact interface due to arbitrary heat input. The predictions of the newly advanced computer programs are tested against existing closed-form solutions for uniform circular or ring heat sources, and a good agreement is found.
CFD ANALYSIS OF PEG 400 BASED NANOFLUIDS
Authors:   “Gheorghe Asachi” Technical University of Iasi, Chereches Elena-Ionela , Chereches Marius ,   “Gheorghe Asachi” Technical University of Iasi, Zupcu Liviu ,   “Gheorghe Asachi” Technical University of Iasi, Minea Alina Adriana ,   “Gheorghe Asachi” Technical University of Iasi
Published: December 2022

In the last years, a lot of research is dedicated to development of new heat transfer fluids. Phase change materials (PCM) are considered a new generation of heat transfer fluids. A convenient tool to verify the efficiency of a fluid PCM for different practical applications is the simulation approach. In order for such an analysis to be possible, it is necessary to correctly and completely describe the fluids, which supposes the knowledge of the laws of variation of the thermophysical properties with temperature. In many industrial applications, heat transfer is one of the most significant process, but the development of efficient equipment is limited by the low thermal conductivity of conventional heat transfer fluids. Complex CFD (computational fluid dynamics) programs, such as ANSYS Fluent, are capable of replacing experimental results. Therefore, based on previous experimental data, a numerical study on heat transfer will be performed, involving laminar flow conditions. In this numerical study, a number of nanofluids based on PEG 400 (polyethylene glycol PEG 400) and two type of nanoparticles (Al2O3 and ZnO), have been implemented in a commercial code to analyze their behavior at heating. Their heating behavior must be understood under different conditions or factors, such as concentration, temperature, pressure, flow conditions, heating systems and flow geometry. In conclusion, PEG 400 based nanofluids is considered to have a high potential for a number of practical applications (for example for their possible use in thermal energy storage), but further studies are needed, as well as the intensification of numerical and experimental research because no applied studies have been identified in the literature.
REVIEW OF VEGETABLE NANOLUBRICANTS FOR TRIBOLOGICAL APPLICATIONS
Authors:   Universidad de Monterrey, Pena-Paras Laura , Rodriguez-Villalobos Martha ,   Universidad de Monterrey, Maldonado-Cortes Demofilo ,   Universidad de Monterrey, Gonzalez Jose Andres ,   Universidad de Monterrey, Duran Ricardo de Jesus ,   Universidad de Monterrey, Ortega Javier ,   The University of Texas Rio Grande Valley
Published: December 2022

About 40 million tons of lubricants are used every year for various industry purposes and applications, where most of them are petroleum based oils. These oils are difficult and expensive to dispose of, have low biodegradability and are contamination risks. Recent efforts have been focused on reducing the environmental impact of petroleum based lubricants through the use of vegetable oils since they are biodegradable and have good lubricity. A drawback of vegetable oils is their poor thermal stability and oxidation, which causes them to decrease their properties at higher loads. Nanoparticle (NP) additives have been explored for improving the tribological performance of vegetable. This literature review seeks to compare and analise the impact of the different NP types, concentrations and vegetable oil type on the coefficient of friction. The vegetable oils that have shown to provide the best tribological behaviour were coconut oil, sunflower oil, palm sesame oil, canola oil, among others. The NP with the best performance were SiO2 and CuO and the concentration with the highest improvement was between 0.01-3.0 wt.%. The results of this study provide an insight on the areas of opportunity for developing new lubricant formulations with vegetable oils and NP additives for industrial applications.
PREDICTION AND ANALYSIS OF THE ROUGHNESS OF MILLED SURFACES BASED ON FUZZY LOGIC
Authors:   Kasdi Merbah University of Ouargla-Algeria, Amira Mohammed Toufik , Belloufi Abderrahim ,   Kasdi Merbah University of Ouargla-Algeria, Abdelkrim Mourad ,   Kasdi Merbah University of Ouargla-Algeria
Published: December 2022

The influence of the cutting conditions of machining process on the surface roughness has been the subject of several scientific works in order to optimize the milling process to get the best-finished surface machined by milling. During the last decades, many methods of artificial intelligence have been carried out to investigate the effect of milling conditions like the cutting speed, feed per tooth and depth of cut on surface integrity of machined surfaces by milling process. However, the progress on the use of Numerical Approaches to predict the surface integrity of machined surfaces like roughness, microhardness, residual stress and cutting temperature still lagging behind the other advances in the industry. The aim of this work is to use the fuzzy logic to predict the surface roughness of the milled surfaces and to study the effect of cutting parameters (cutting speed, feed per tooth and depth of cut) on the roughness of the surfaces machined by milling. a new model was created using fuzzy logic based on an experimental database. The database includes the variation of the surface roughness of machined surfaces of the Ti-6Al-4V by milling according to the cutting parameters (cutting speed, feed per tooth and depth of cut) on which the model was develop on MATLAB using fuzzy tool. The inputs of the fuzzy inference model were the three cutting parameters of milling: the cutting speed, feed per tooth and depth of cut, and the output of the fuzzy system was the roughness of the machined surfaces by milling of the Ti-6Al-4V. The predicted values of roughness obtained by the fuzzy model were compared to the experimental values and the result was very good, the average error rate was verry low that’s mean that the prediction model based on fuzzy logic works correctly and with high accuracy and can be used as a solution to predict the surface roughness before starting milling provided to respect a very specific range of parameters (defined by the universe of discourse) when using this model. The approach based on fuzzy logic can be used also to predict other phenomena of milling process like cutting temperature and microhardness.
EMPIRICAL ANALYSIS OF MANUFACTURING USING 5G ARCHITECTURE
Authors:   University ”1 Decembrie 1918” of Alba Iulia, Ciortea Elisabeta Mihaela
Published: December 2022

This paper is based on the benefits of 5G digitization and the impact it can have on the entire production system. With regard to the complete production system, reference is made to IoT platforms used at the level of industrial enterprises. Companies can focus on deploying IoT devices that transmit real-time information to other devices. We are in the midst of an industrial revolution, and as companies continue to turn their attention to data, the speed and magnitude of this data combined with real-time information is the difference between success and failure. In order to highlight the proposed problems, an empirical approach will be tried using Petri nets, which are relatively easy to use for real-time systems with concrete results, which can be analysed and interpreted for short-term decision making.
A TRUSTWORTHY COMPUTATION OF THE TRANSITORY AND STATIONARY RESPONSES FOR THE SHIP ROLLING BY A MODIFIED MULTIPLE TIME SCALE METHOD
Authors:   Constanta Maritime University, Deleanu Dumitru , Turof Mihaela ,   Constanta Maritime University, Dumitrache Constantin Luois ,   Constanta Maritime University
Published: December 2022

An important step in any analysis concerning the ship behaviour in waves is a reasonable accurate assessment of high roll amplitudes. The most commonly used way to estimate the roll oscillations is to solve a nonlinear differential equation with the roll angle as unknown. The nonlinearities refer to different ways of approximating the damping and restoring moments. The lack of exact analytical solutions and the inability of a numerical solution to highlight the influence of various parameters on the ship motion, leads to the need to use approximate analytical methods. Operating the benefits of a modified multiple time scale method recently proposed in the literature, we obtained the governing equations for the transition towards the stationary solutions, the first – order approximations for these solutions and the frequency – amplitude relationship. The accuracy of the analytical results derived in the paper was demonstrated by comparing them with the numerical results (considered to be exact). The agreement between the two was excellent for relatively small forcing amplitude and satisfactory for high level of them on almost the entire range of used values for excitation frequency, including the primary resonance domain.
ANALYSIS OF THE STATISTICAL DATA GENERATED BY AN ADAPTIVE STRETCH FORMING PROCESS
Authors:   “Vasile Alecsandri” University of Bacau, Grigoras Cosmin Constantin , Zichil Valentin ,   “Vasile Alecsandri” University of Bacau, Drob Catalin ,   “Vasile Alecsandri” University of Bacau, Ciubotariu Vlad Andrei ,   “Vasile Alecsandri” University of Bacau
Published: December 2022

: Constant industrial processes improvements represent a fundamental step in the evolution of efficient processing. Due to physical or financial limits, there is a limit to how the mechanical or electronic side can be optimised. A solution for improving industrial processes can come in the form of complex machine algorithms that analyse the process in real-time and decide, with each step, what is optimal. To put this statement into practise, we have designed and implemented a fully operational self-adaptive stretch forming process controlled with the help of a dedicated statistical analysis algorithm. The foundation of the algorithm lies in the deformation theory of metals. In its simplest form, it can be summarised that if a sheet of metal is stretched, its length will increase as the force acting upon it increases until the ultimate tensile strength limit is reached; after this limit, failure occurs. Therefore, the algorithm analyses the material strain controlling the bi-axial nature of the stretch forming process by constantly adjusting for axial force and die speed. It does this through complex computer-vision image analysis techniques for strain measurement and stretching pressure readings as input data. The readings are analysed using the ANOVA method, providing R-squared and p-values for stretching pressure and die speed. The decisions that the algorithm takes are based on the statistical analysis of its previous decision, aiming to improve the overall process R-squared. The overall results are validated by measuring the obtained stretched parts’ deviation to the die shape. Therefore, the measurements were taken using a GOM 3D measuring system. This paper aims to explain the methodology of the algorithm using how the measurements are taken, how the statical analysis generated decisions for controlling the industrial equipment, and to analyse the statistical data generated by the self-adaptive stretch forming algorithm for the experimental study by comparing the decision it takes for each for the 20 processed 1050 aluminium alloys blanks. The results indicate the ideal succession of decisions and which path should be taken to improve the decision-making for both elastic and plastic domains.
A MODEL FOR MONITORING OF THE 8D AND FMEA TOOLS INTERDEPENDENCE IN THE ERA OF INDUSTRY 4.0
Authors:   University of Pitesti, Ionescu Nadia , Ionescu Laurentiu Mihai ,   University of Pitesti, Rachieru Nicoleta ,   University of Pitesti, Mazare Alin Gheorghita ,   University of Pitesti
Published: December 2022

The application of Industry 4.0 technologies is a goal that, sooner or later, all manufacturers will achieve. The implementation process of these technologies involves establishing strategies at the level of each department. In this paper we propose a model and its implementation that improves communication between the quality management department and the manufacturing and logistics departments by using specific Industry 4.0 technologies: business flow automation and communication between equipment. This is an improvement of the 8D methodology flow. Upon receipt of a customer claim, the Failure Modes and Effects Analysis (FMEA risk analysis) must be updated with the new failure mode that occurred - resulting from the claim - so there is a centralized database with the claims that occur and from which the failure modes are automatically populated. On the other hand, the claim triggers a signal flow at the level of all departments and workstations in a factory: the sending of emails to decision makers, alerts and impressions for operators in the workstations (at the level of billboards or on tablets). The proposal uses the following technologies: business flow automation using specialized software tools (middleware business process management solutions), central server communications - mobile terminal clients, server communications - equipment, IoT systems. The paper presents the implementation of the model with a case study in which its impact on the departments involved in an automotive enterprise is studied.
HEAT TRANSFER OPTIMIZATION OF AN ELECTRONIC CONTROL UNIT IMMERSED IN NATURAL CONVECTION COOLANT
Authors:   “Gheorghe Asachi Technical University of Iasi, Lates Cristina Georgiana , Dragan Cristina Mihaela ,   University Politehnica Timisoara, Dumitras Catalin Gabriel ,   “Gheorghe Asachi Technical University of Iasi
Published: December 2022

The current paper aims to present a thermal dissipation optimization for an Electronic Control Unit (ECU) cooled with thermal paste. The improvement consists of replacing the inside air of the module with four single-phase dielectric coolants in natural convection and one silicone elastomer compound, each of which has a higher thermal conductivity than air. Two distinct experiments were performed: electronics immersed in coolant with and without thermal paste, exposed to an ambient temperature of between -40°C and 105°C. Temperature measurements on the hot spots of these solutions were compared to electronic modules that are cooled only with thermal paste.
Intraday hedging and the safe haven role of Bitcoin
Authors: ARBI MADANI MOHAMED , FTITI ZIED , LOUHICHI WAEL , BEN AMEUR HACHMI
Published: December 2022

We investigate intraday hedging and the safe haven role of Bitcoin for stocks, currencies, and oil. The hedge concept depends on non-correlation or negative interaction, on average, while the safe haven concept depends on non-correlation or negative correlation in times of market turmoil. We look at Bitcoin’s ability to be a hedge or safe haven asset with standard financial assets by considering a short investment horizon using high frequency data. Accordingly, we propose a new measure, the q-detrending moving average cross-correlation coefficient, to characterise intraday market interdependence between Bitcoin and these assets during medium and extreme movements. During medium fluctuations, Bitcoin is a weak hedge against currencies, oil, and stocks. During high fluctuations, we find a negative relationship between Bitcoin and oil, meaning Bitcoin can serve as a safe haven against extreme down movements in this market. However, Bitcoin is a weak safe haven asset for the other two markets.
A note on portfolio choice and behavioral finance: Some food for thought
Authors: PFIFFELMANN Marie , ROGER PATRICK
Published: December 2022

In this note, we invite the reader to think about behavioral portfolio choice as a deviation from the standard Markowitz problem. The deviation has three origins; 1) the objective function to be maximized, 2) the probability measure under which prices and returns are characterized, and finally 3) the domain over which the optimization problem is solved. We then provide an illustration, from the Behavioral Portfolio Theory (BPT) of Shefrin and Statman (2000) to a set of relevant portfolio performance measures in a behavioral framework.
How to re-conceptualise and re-integrate climate-related finance into society through ecological accounting?
Authors: Rambaud Alexandre , Chenet Hugues
Published: December 2022

In this paper, we argue that current finance, and the prevailing fair value accounting system, is disconnected from companies and from strong sustainability requirements, making it difficult to develop a climate finance system that is operational and aligned with the challenges of climate preservation. Based on this observation, we propose an exploratory and theoretical study which introduces how and why a particular and innovative ecological accounting approach, the CARE model, currently called upon by a growing number of practitioners and researchers, is a relevant framework to re-conceptualise the issue of climate finance. From a theoretical point of view, CARE offers a suitable language for structuring the issues of ecological costs, debts and conservation and associated financing. From a practical point of view, it offers a methodological support that can be used to address these issues, from an accounting and management point of view as well as from an investor's point of view, ensuring compliance with the Paris Agreements 2°C goal in particular.
CSR Disclosure and Information Asymmetry: The Role of Financial Reporting Quality
Authors: Viviani Jean-Laurent , Touchais Lionel , Nguyen Lan-Phuong
Published: December 2022

Based on firm-level data from 39 countries, over a nine-year period, this study analyzes whether financial reporting quality and CSR disclosure are related to each other in improving the quality of corporate information. The findings show that firms disclosing a greater amount of CSR information have a lower degree of information asymmetry (bid-ask spread). This relationship is less pronounced in firms with high financial reporting quality. It suggests a substitution association between financial reporting and CSR disclosure in reducing information asymmetry. Financial transparency is therefore an important factor to explain the informativeness of CSRD. With a high financial transparency, CSRD provides less incremental information content to the investors. However, the robustness tests show that CSRD decreases the quality of financial analysts’ forecasts. This seemingly contradictory result might be explained by firms engaging in differentiated information disclosure to cope with contradictory social and institutional pressures (investors versus financial analysts).
Prof Banking development and corporate innovation
Authors: Ftiti Zied
Published: December 2022

This paper investigates the impact of banking development on corporate innovation.Using data from the listed French companies on the SBF 120, we presentevidence that bank geographical proximity is no longer determinant in access toR&D financing. However, an efficient and performing banking sector that financethe economy through credits to firms seems to encourage firms to invest in R&D.We find that the probability that R&D investments result in new patents seems tobe more affected by corporate governance rather than by banking development.Results show no empirical evidence on a greater impact of banking developmenton corporate innovation for firms that are more dependent upon external finance.In this case, the equity market development becomes the driving factor of R&Dfinancing and the corporate governance remains the fundamental determinant oftransforming R&D investments on new patents.
DE LA VICTIME EN FRANCE
Authors: Par Paul Par Paul , ROUET Olivier
Published: December 2022

La notion de victime est aujourd’hui convoquée à hue et à dia par tout un chacun dans des contextes variés, voire parfois même tout à fait opposés. En quoi consiste cette notion ? Que signifie-t-elle ? Comment la penser dans une perspective médico-légale ? Une victime comprend dans son statut une part matérielle – celle de l’homme, de la femme, de la personne qui vit cet état, et de tout ce que ce dernier touche – et une part immatérielle – celle de son esprit, de la réception de ce statut individuel par le collectif. Ces deux parts ne s’opposent pas, elles forment une unité qui est la victime. C’est cet ensemble que le droit, par ses principes matriciels, propose d’organiser ; mais il s’inscrit dans une démarche collective, un rapport de la somme des individualités qui forme la cité à la victime, plus profond, et par principe, moral. C’est ce principe moral qui fonde toute la place de la victime dans le collectif et lui permet réparation, sans pour autant faire table rase d’un état dont il est le devoir de chacun de prendre conscience afin d’offrir à celui qui est victime la reconnaissance qu’il nécessite pour retrouver sa place dans le collectif.
A glimpse of the lost Upper Triassic to Middle Jurassic architecture of the Dinaric Carbonate Platform margin and slope
Authors: Rožič Boštjan , Gale Luka , Oprčkal Primož , Švara Astrid , Popit Tomislav , Kunst Lara , Turnšek Dragica , Kolar-Jurkovšek Tea , Šmuc Andrej , Ivekovič Aljaž , Udovč Jan , Gerčar David
Published: December 2022

In the southernmost outcrops of the Slovenian Basin the Middle Jurassic coarse-grained limestone breccia (mega)beds are interstratified within a succession that is otherwise dominated by hemipelagites and distal turbidites. In this paper, these beds are described as the Ponikve Breccia Member of the Tolmin Formation. We provide descriptions of the studied sections with detailed geological maps and analysis of the breccia lithoclasts. From the latter, a non-outcropping margin of the Dinaric Carbonate Platform is reconstructed. In the Late Triassic the platform margin was characterized by a Dachstein-type marginal reef. After the end-Triassic extinction event, the platform architecture remained, but the reefs were replaced by sand shoals characterized by ooids. In the late Early Jurassic and/or early Middle Jurassic a slope area might have been dissected by normal faults and a step-like paleotopography was formed. In the Bajocian, during a period of major regional geodynamic perturbations, extensional or transtensional tectonic activity intensified and triggered the large-scale collapses of the Dinaric Carbonate Platform margin producing the limestone breccias described herein. This may in turn have caused a backstepping of the platform margin, as is evident from the occurrence of Late Jurassic marginal reefs that are installed directly above the Upper Triassic and Lower Jurassic inner platform successions.
Analisis Proses Perubahan APBDesa Dalam Rangka Prioritas Penggunaan Dana Desa Di Masa Pandemi Covid-19
Authors: Dharmakarja I Gede Made Artha , Kusuma I Gede Komang Chahya Bayu Anta , Azizah Salsabila Nur , Kesuma Willy Rifokto
Published: December 2022

The Government of Indonesia is utilizing the distribution of village funds which are transferred annually to all villages to overcome the covid-19 pandemic in 2020. This study aims to determine the ability of village governments to adapt to managing village finances by analyzing the village budget amandment. This study uses a descriptive qualitative method by analyzing primary data in the form of transcripts from interviews with financial managers in Kalirong and Kedungturi Village as well as secondary data in the form of APBDesa before and after the amandment. The analysis uses the theory of participation, effectiveness and AGIL to explain the dynamics of the APBDesa amandment process. The results of the study show that even though the mechanism for drafting the amandment to the APBDesa does not fully follow the applicable regulatory procedures amid social restrictions, its management is able to achieve the goal of overcoming the impact of the covid-19 pandemic in an accountable manner. This research is expected to be able to show the conditions of village resilience in order to strengthen government policies in the context of empowerment and development through village fund transfers.
Pemerintah Indonesia memanfaatkan penyaluran dana desa yang setiap tahun ditransfer ke seluruh desa untuk mengatasi pandemi covid-19 di tahun 2020. Penelitian ini bertujuan untuk mengetahui kemampuan pemerintah desa dalam beradaptasi mengelola keuangan desa dengan menganalisis perubahan APBDesa. Penelitian ini menggunakan metode kualitatif deskriptif dengan menganalisis data primer berupa transkrip hasil wawancara pengelola keuangan di Desa Kalirong dan Desa Kedungturi serta data sekunder berupa APBDesa sebelum dan sesudah perubahan. Analisis menggunakan pendekatan teori partisipasi, efektivitas dan AGIL untuk menjelaskan dinamika proses perubahan APBDesa. Hasil penelitian menunjukkan bahwa meskipun mekanisme penyusunan perubahan APBDesa tidak sepenuhnya mengikuti prosedur ketentuan yang berlaku di tengah pembatasan sosial namun pengelolaannya mampu mewujudkan tujuan untuk mengatasi dampak pandemi covid-19 secara akuntabel. Penelitian ini diharapkan mampu menunjukkan kondisi ketahanan desa guna memperkuat kebijakan pemerintah dalam rangka pemberdayaan dan pembangunan melalui transfer dana desa.
Türkiye'de Tarımsal Yükseköğretimde Tarımsal Yayım ve İletişim Dersinin Mevcut Durumu
Authors: ÖCAL KARA Fatma , AKIN Songül , ÖDEMİŞ Gülsüm
Published: December 2022

Tarımsal Yayım ve İletişim dersi; danışmanlık hizmetlerinde kullanılacak yöntem ve uygulamalar gibi teknik konuların yanı sıra kırsal toplum yapısı gibi sosyal konuları içermesi nedeniyle ziraat mühendisliği mesleğine, nitelikli bir danışman-üretici ilişkisine katkı sunabilecek bir derstir. Buna rağmen, ziraat fakültelerinin tarım ekonomisi bölümü dışındaki bölümlerinde bu ders tercih edilmemektedir. Bu çalışmada, Türkiye'de lisans düzeyinde verilen Tarımsal Yayım ve İletişim dersinin mevcut durumunun ortaya çıkarılması amaçlanmıştır. Bu maksatla 2022 yılı itibariyle 41 üniversitenin ziraat fakülteleri tam sayım örnekleme yöntemi ile çalışma kapsamına alınmıştır. Tarım Ekonomisi Bölümü dışındaki diğer bölümlerde dersin zorunlu işlenme oranı tarla bitkileri bölümünde %45, bahçe bitkileri bölümünde %28 ve hayvan bilimleri bölümünde %14 olarak belirlenmiştir. Bu sonuç, "Ziraat mühendisi" unvanına sahip birçok mezunun mezun oldukları bölümlerin müfredatlarında bu dersin bulunmamasından dolayı insan kaynaklarının önemini ve özelliklerini iyi anlamadan kariyerlerine başladıkları şeklinde yorumlanabilir. Bu eksikliğin telafi edilebilmesi için Tarımsal Yayım ve İletişim dersinin diğer birçok servis dersi gibi tüm bölümlerde zorunlu olarak okutulması gerektiği değerlendirilmektedir.