scholarly journals Methods for Measuring the Optimal Time for the Water Residence in the Denitrification Filter

2021 ◽  
Vol 24 (4) ◽  
pp. 25-32
Author(s):  
Lyubomyr Haidamaka
Keyword(s):  
Water Purification ◽  
Research Work ◽  
Point Of View ◽  
Optimal Time ◽  
Practical Application ◽  
High Quality ◽  
Water Filter ◽  
Water Conditioning ◽  
Time Parameters ◽  
Industrial Needs

Nitrate filters are widely used in various sectors of the national economy for the purpose of stable degradation of nitrates without complex technological changes and control, as well as for obtaining, for practical use, water free from impurities of various polluting substances. The relevance of the stated research topic is determined by the wide use of filters in various areas of water conditioning in order to improve the quality of consumed water, as well as the need to develop methods for qualitative measurements of the optimal time parameters for the water residence in the denitrification filter when using it. The purpose of this research work is the practical development of methods for measuring the optimal time for the water residence in a denitrification filter, in order to find optimal opportunities for eliminating harmful and polluting substances from water used for domestic and industrial needs. The methodology of this research involves the use of a combination of methods for the systematic study of practical application issues of denitrification filters in water purification systems, using the method of qualitative analysis of water conditioning problems that are important with reference to the need to obtain high-quality water in volumes sufficient to meet the current domestic and industrial needs. The results of this research work are of great importance from the point of view of studying the problematic issues of determining the optimal time parameters for the water residence in modern filters, in order to achieve optimal indicators of the cleaning quality. The results and conclusions of this research are of considerable practical value for water filter designers, solving practical problems of creating high-quality denitrification filters, as well as for ordinary users, for whom the issues of water purification for its further practical application are of great importance

scholarly journals The contribution of the Italian residents in neurology to the COVID-19 crisis: admirable generosity but neurological training remains their priority

2021 ◽  
Author(s):  
Cristina Tassorelli ◽  
Vincenzo Silani ◽  
Alessandro Padovani ◽  
Paolo Barone ◽  
Paolo Calabresi ◽  
...  
Keyword(s):  
Clinical Training ◽  
Real Life ◽  
Healthcare Management ◽  
Point Of View ◽  
Research Activity ◽  
High Quality ◽  
Research Activities ◽  
Italian Regions ◽  
Training And Research

Abstract Background The coronavirus disease 2019 (COVID-19) pandemic has severely impacted the Italian healthcare system, underscoring a dramatic shortage of specialized doctors in many disciplines. The situation affected the activity of the residents in neurology, who were also offered the possibility of being formally hired before their training completion. Aims (1) To showcase examples of clinical and research activity of residents in neurology during the COVID-19 pandemic in Italy and (2) to illustrate the point of view of Italian residents in neurology about the possibility of being hired before the completion of their residency program. Results Real-life reports from several areas in Lombardia—one of the Italian regions more affected by COVID-19—show that residents in neurology gave an outstanding demonstration of generosity, collaboration, reliability, and adaptation to the changing environment, while continuing their clinical training and research activities. A very small minority of the residents participated in the dedicated selections for being hired before completion of their training program. The large majority of them prioritized their training over the option of earlier employment. Conclusions Italian residents in neurology generously contributed to the healthcare management of the COVID-19 pandemic in many ways, while remaining determined to pursue their training. Neurology is a rapidly evolving clinical field due to continuous diagnostic and therapeutic progress. Stakeholders need to listen to the strong message conveyed by our residents in neurology and endeavor to provide them with the most adequate training, to ensure high quality of care and excellence in research in the future.

scholarly journals Development and Comparative Analysis of Electrochemically Etched Tungsten Tips for Quartz Tuning Fork Sensor

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 286
Author(s):  
Ashfaq Ali ◽  
Naveed Ullah ◽  
Asim Ahmad Riaz ◽  
Muhammad Zeeshan Zahir ◽  
Zuhaib Ali Khan ◽  
...  
Keyword(s):  
Tuning Fork ◽  
Mechanical Stability ◽  
Electrochemical Etching ◽  
Research Work ◽  
Cone Angle ◽  
Quartz Tuning Fork ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
High Quality ◽  
Scanning Electron

Quartz Tuning Fork (QTF) based sensors are used for Scanning Probe Microscopes (SPM), in particular for near-field scanning optical microscopy. Highly sharp Tungsten (W) tips with larger cone angles and less tip diameter are critical for SPM instead of platinum and iridium (Pt/Ir) tips due to their high-quality factor, conductivity, mechanical stability, durability and production at low cost. Tungsten is chosen for its ease of electrochemical etching, yielding high-aspect ratio, sharp tips with tens of nanometer end diameters, while using simple etching circuits and basic electrolyte chemistry. Moreover, the resolution of the SPM images is observed to be associated with the cone angle of the SPM tip, therefore Atomic-Resolution Imaging is obtained with greater cone angles. Here, the goal is to chemically etch W to the smallest possible tip apex diameters. Tips with greater cone angles are produced by the custom etching procedures, which have proved superior in producing high quality tips. Though various methods are developed for the electrochemical etching of W wire, with a range of applications from scanning tunneling microscopy (SPM) to electron sources of scanning electron microscopes, but the basic chemical etching methods need to be optimized for reproducibility, controlling cone angle and tip sharpness that causes problems for the end users. In this research work, comprehensive experiments are carried out for the production of tips from 0.4 mm tungsten wire by three different electrochemical etching techniques, that is, Alternating Current (AC) etching, Meniscus etching and Direct Current (DC) etching. Consequently, sharp and high cone angle tips are obtained with required properties where the results of the W etching are analyzed, with optical microscope, and then with field emission scanning electron microscopy (FE-SEM). Similarly, effects of varying applied voltages and concentration of NaOH solution with comparison among the produced tips are investigated by measuring their cone angle and tip diameter. Moreover, oxidation and impurities, that is, removal of contamination and etching parameters are also studied in this research work. A method has been tested to minimize the oxidation on the surface and the tips were characterized with scanning electron microscope (SEM).

THE ROAD AHEAD TO BETTER MEDICAL CARE FOR CHILDREN

PEDIATRICS ◽  
1950 ◽  
Vol 6 (3) ◽  
pp. 553-556
Keyword(s):  
Child Health ◽  
Medical Care ◽  
Medical Center ◽  
Point Of View ◽  
Medical Services ◽  
High Quality ◽  
The Road ◽  
Provide Child Care ◽  
Ultimate Objective ◽  
The Many

THE road to better child health has been discussed in relation to the doctor and his training, health services and their distribution. We have dealt with the unavoidable question of costs. Particular attention has been given to some of the advantages and dangers of decentralization of pediatric education and services. Each of the various subjects has been discussed from the point of view of its bearing on the ultimate objective of better health for all children and the steps necessary to attain this goal. Now, we may stand back from the many details of the picture, view the whole objectively and note its most outstanding features. First is the fact that the improvement of child health depends primarily upon better training for all doctors who provide child care, general practitioners as well as specialists. This is the foundation without which the rest of the structure cannot stand. The second dominant fact is the need for extending to outlying and isolated areas the high quality medical care of the medical centers, without at the same time diluting the service or training at the center. The road to better medical care, therefore, begins at the medical center and extends outward through a network of integrated community hospitals and health centers, finally reaching the remote and heretofore isolated areas. Inherent in all medical schools is a unique potential for rendering medical services as well as actually training physicians. The very nature of medical education—whereby doctors in training work under the tutelage of able specialists in the clinic, hospital ward, and out-patient department—provides medical services of high quality to people in the neighboring communities.

THE SCOPE OF ACCREDITATION OF THE FORENSIC LABORATORY: THE CONCEPT AND PATTERNS OF CHANGE

2021 ◽  
Vol 14 (4) ◽  
pp. 340-344
Author(s):  
ELENA CHESNOKOVA ◽  
Keyword(s):  
Forensic Science ◽  
Research Work ◽  
Accreditation Body ◽  
Unfair Competition ◽  
Practical Application ◽  
International Standard ◽  
Advantages And Disadvantages ◽  
Flexible Scope ◽  
Calibration Laboratories

The purpose of the research work is to analyze the advantages and disadvantages of the «flexible» field of accreditation of forensic laboratories and the field of accreditation that has a rigid range. The development of standardization in forensic science, including the expansion of the number of forensic laboratories that build their activities in accordance with the requirements of the international standard GOST ISO/IEC 17025-2019 «General requirements for the competence of testing and calibration laboratories», encourages us to pay attention to this issue again. In the course of the study, the following conclusions were formulated. Insufficient clarity in defining the «flexible» scope of accreditation and differences in the understanding of its boundaries by the accreditation body, the forensic laboratory and the customer can lead to abuse by individual laboratories and the development of unfair competition. This argument in favor of abandoning the «flexible» field of accreditation for forensic laboratories seems to be much more weighty than the listed advantages of its practical application.

Soft Power Effectiveness: Problem of Evaluation

2015 ◽  
pp. 48-58
Author(s):  
E. Kharitonova
Keyword(s):  
Soft Power ◽  
Point Of View ◽  
State Agencies ◽  
Practical Application ◽  
Theoretical Understanding ◽  
Policy Makers ◽  
The Past ◽  
Focus On Results ◽  
Need To Evaluate ◽  
Power Concept

The article focuses on the task of measuring and evaluating a state's soft power. While the soft power concept developed by Joseph Nye is currently widely accepted and used, its theoretical understanding and practical application remains challenging. Both international relations scholars and those responsible for soft power in governmental and non-state agencies are looking for the tools to assess their work and the country's standing in the world in terms of soft power. As the author of the concept and other researchers noted, evaluation and measurement may be difficult due to the number of influencing factors including the use of hard power that can overshadow soft power efforts, and also because soft power efforts can bring results only in a distant period of time. However, in response to the researchers' and policy makers' need to evaluate, measure and compare soft power related parameters, a number of international ratings evolved during the past several years, such as various ratings of soft power, nation brands, countries' reputation and presence. At the same time, such rankings have several weaknesses. First of all, they present mainly the western point of view which focuses on the parameters important for western audiences and may overlook characteristics important for other, non-western cultures. They also may be subjective due to financial reasons. Besides that, while some of the ratings aim to evaluate resources or assets of nations' soft power, other focus on results like influence or reputation. Evaluation of instruments used to enhance a country's soft power and their effectiveness is also important. In many cases, even significant resources of soft power do not guarantee strong positions in this context. Comparing certain countries' positions in different ratings helps to understand a country's standing in terms of soft power, identify strong sides and analyze whether a state's soft power potential transforms into the desired outcomes.

scholarly journals Semi-Supervised Multi-View Clustering with Weighted Anchor Graph Embedding

2021 ◽  
Vol 2021 ◽  
pp. 1-22
Author(s):  
Senhong Wang ◽  
Jiangzhong Cao ◽  
Fangyuan Lei ◽  
Qingyun Dai ◽  
Shangsong Liang ◽  
...  
Keyword(s):  
State Of The Art ◽  
Graph Embedding ◽  
Multiple Views ◽  
Time Cost ◽  
Practical Application ◽  
Real World Data ◽  
High Quality ◽  
Free Graph ◽  
Anchor Points ◽  
Almost All

A number of literature reports have shown that multi-view clustering can acquire a better performance on complete multi-view data. However, real-world data usually suffers from missing some samples in each view and has a small number of labeled samples. Additionally, almost all existing multi-view clustering models do not execute incomplete multi-view data well and fail to fully utilize the labeled samples to reduce computational complexity, which precludes them from practical application. In view of these problems, this paper proposes a novel framework called Semi-supervised Multi-View Clustering with Weighted Anchor Graph Embedding (SMVC_WAGE), which is conceptually simple and efficiently generates high-quality clustering results in practice. Specifically, we introduce a simple and effective anchor strategy. Based on selected anchor points, we can exploit the intrinsic and extrinsic view information to bridge all samples and capture more reliable nonlinear relations, which greatly enhances efficiency and improves stableness. Meanwhile, we construct the global fused graph compatibly across multiple views via a parameter-free graph fusion mechanism which directly coalesces the view-wise graphs. To this end, the proposed method can not only deal with complete multi-view clustering well but also be easily extended to incomplete multi-view cases. Experimental results clearly show that our algorithm surpasses some state-of-the-art competitors in clustering ability and time cost.

scholarly journals Análisis comparativo de una metaheurística en base a algoritmo genético vs un método de ramificación y corte para un caso de entrega y recolección con restricciones de ventana de horario

2017 ◽  
Vol 1 (2) ◽  
Author(s):  
Fabian López
Keyword(s):  
Time Window ◽  
Time Frame ◽  
Branch And Cut ◽  
Pickup And Delivery ◽  
Np Hard ◽  
Practical Application ◽  
High Quality ◽  
Method Of Solution ◽  
Time Window Constraints ◽  
Computational Resources

Palabras claves: Algoritmos genéticos, logística de ruteo, metaheuristicas, secuenciaciónResumen. En la solución de problemas combinatorios, es importante evaluar el costo-beneficio entre la obtención de soluciones de alta calidad en detrimento de los recursos computacionales requeridos. El problema planteado es para el ruteo de un vehículo con entrega y recolección de producto y con restricciones de ventana de horario. En la práctica, dicho problema requiere ser atendido con instancias de gran escala (nodos ≥100). Existe un fuerte porcentaje de ventanas de horario activas (≥90%) y con factores de amplitud ≥75%. El problema es NP-hard y por tal motivo la aplicación de un método de solución exacta para resolverlo en la práctica, está limitado por el tiempo requerido para la actividad de ruteo. Se propone un algoritmo genético especializado, el cual ofrece soluciones de buena calidad (% de optimalidad aceptables) y en tiempos de ejecución computacional que hacen útil su aplicación en la práctica de la logística. Para comprobar la eficacia de la propuesta algorítmica se desarrolla un diseño experimental el cual hará uso de las soluciones óptimas obtenidas mediante un algoritmo de ramificación y corte sin límite de tiempo. Los resultados son favorables.Key words: Genetic algorithms, routing logistics, metaheuristics, schedulingAbstract. In an attempt to sovle the combinatorics problems, it is important to evaluate the costbenefit ratio between obtaining solutions of high quality and the loss of the computational resources required. The problem presented is for the routing of a vehicle with pickup and delivery of products with time window constraints. This problem requires instances of great scale (nodes≥100). A strong active time window percentage exists (≥90%) with factors of amplitude ≥75%. The problem is NP-hard and hence, the application of an exact method of solution, is limited by the time frame required for routing activity. A specialized genetic algorithm is proposed, which offers solutions of high precision and in computational times that makes its practical application useful. An experimental design is developed with good results that makes use of optimum solutions obtained by means of branch and cut algorithm without time limit.

scholarly journals Some considerations on the use of the geoelectric «square» array

1996 ◽  
Vol 39 (1) ◽  
Author(s):  
F. Merlanti ◽  
M. Pavan
Keyword(s):  
Error Term ◽  
Homogeneous Medium ◽  
Archaeological Site ◽  
Point Of View ◽  
Practical Application ◽  
Linear Arrays ◽  
Relative Measurements ◽  
Square Array ◽  
Anisotropy Coefficients

The «square array» is what we may consider to be an unconventional geoelectric configuration since it is not widely used and therefore there are few examples of practical application. The purpose of this research was to verify the operating effectiveness of this configuration in terms of profile and sounding, and the significance of the set of possible measurements and derived parameters. This was also obtained by comparing the relative measurements with the most common linear arrays (Wenner, Schlumberger, tripotential). The experiment was carried out in two different zones. In the first area, corresponding to the archaeological site of Marzabotto (Bologna), the target was represented by wall remnants inserted in a substantially homogeneous medium, from an electrical point of view, and at depths that are less than those of the dimensions of the device used. At the second site, located in the valley of Landrazza (Savona), the situation was very different, with a valley section on a calcareous bedrock filled with poorly classified residual sediments. An overall analysis of the results showed that the square technique is more exhaustive than the classical linear arrangements when performing soundings. Instead, with regard to profile development, it is not as preferred since it involves a greater amount of work without generating improved information. From analysis of the experimental results, considerable doubts arose about the meaning and the use of the anisotropy coefficients and the error term as defined theoretically. These parameters turned out to be of little use with regard to the characterization of the ground anisotropy and for checking the reliability of the measurements.

scholarly journals SEMANTIC NEGOTIATION AND RELIGIOUS TRANSLATION

2021 ◽  
Vol 03 (08) ◽  
pp. 59-71
Author(s):  
Hayat NAJI
Keyword(s):  
Research Work ◽  
Point Of View ◽  
Normal Reader ◽  
Cultural Dimension ◽  
Original Text ◽  
Sacred Text ◽  
Personal Factors ◽  
Religious Texts ◽  
Target Culture

The translation of religious texts has always been a perilous undertaking, especially when it concerns a sacred text. Indeed, seeing translation as an act of communication requires a knowledge of the communicative parameters that constitute it. The translator-speaker, who plays the role of intermediary, must create an interaction at the level of meaning and its semantic components. From this emerges the role of the addressee as the main protagonist and the only interpretative force of the message. Thus, the process of negotiation manages the translating activity, since the transfer of a message is not only reduced to a process of reformulation of the source text in another language, but, largely exceeds this compartmentalization. We will first discuss the challenges and stakes of the translation of religious texts, which we have chosen to illustrate with examples that make this aspect clear. Then, we will insist on the question of the translation as a semantic negotiation, considering that there is a confrontation between transmitter and receiver from the point of view of knowledge, historical and linguistic references. Indeed, this facet of the pyramid where the cultural dimension of translation and interpretation is played out remains unknown and implicit. It is quite easy to reveal what is related to the cultural, social and historical reality of a particular receiver. But that is not enough to communicate, it is also necessary to question the cultural references of this one, the representations conveyed by the language. Indeed, we have chosen to present examples of the Holy Qur'an translated by translators of different religions, and given that some translations have deviated from the noble mission of translation, in this case, the faithful transmission of the meaning, without any objectivity whatsoever, especially when it is a sacred text whose inimitability is not to be proven or tested. Thus, the difficulty in our choice stems, on the one hand, from the sacred character of the chosen writing, and on the other hand, from the nature of research in this field which is condemned to remain always relative. Since several elements control the translation of the sacred text, namely, the language, the tradition and the personal factors of the translator. Finally, the field of religious translation requires a great deal of precision and neutrality, and a constant rethinking of the fact that the slightest subjective or cultural interpretation could call into question our research work. Thus, when it comes to cultural transfer, the translator's task is to take into consideration the knowledge that already exists in the target culture about the source culture. Indeed, it is necessary to know how to relate the knowledge concerning the target culture to the knowledge via the source culture. The translator is the first receiver who receives and interprets the message; he will therefore try to understand the source culture with his own knowledge and value judgments. The translator is indeed a mediator because he assumes two roles, that of receiver and reader of the source message, however, the translator having a task of reader which must be different from that of the normal reader, since he must undoubtedly appropriate the competence of mediator in communication which crosses with the function of transmitter of the translated message. Moreover, this same message undergoes a second transfer; the target reader receives it and interprets it in turn according to his own ideological and cultural schemes. Thus, the process of the translated text is not limited to a single phase, but, it enchains back and forth during which the text acquires the imprint of the translator who makes the transfer. Without forgetting to negotiate the meaning by respecting all the circumstances of the original text. So, to what extent can this semantic negotiation communicate the said and the unsaid of the text? .

scholarly journals Il castello Colonna di Arnara: dal restauro del monumento alla valorizzazione del borgo antico e del suo territorio

X ◽  
2020 ◽  
Author(s):  
Alessandra Cattaneo ◽  
Laura Baratin
Keyword(s):  
Cultural Heritage ◽  
Social Innovation ◽  
Economic Value ◽  
Research Work ◽  
Exceptional Case ◽  
Point Of View ◽  
Medieval Architecture ◽  
Important Place ◽  
Key Factor ◽  
Private And Public

The castle Colonna of Arnara: from the restoration of the monument to the enhancement of the ancient village and its territoryThe castle of Arnara, is located in Ciociaria in southern Lazio, in what was once the feud of the Conti of Ceccano. For the territory it is the most important monumental complex of medieval architecture. In fact, despite its small size, it is one of the few examples of fortified architecture still original in its essential lines. This castle represents an exceptional case of sedimentation and stratification, which even today, from its reading, allows us to reconstruct both its historical events and those related to the urban development of the adjacent historic village. Moreover it can be considered of priority importance also from the urbanistic point of view because it represents the first historical nucleus of Arnara. Unfortunately, today, the castle is in a bad state of conservation. With the passing of time its conditions have become more and more aggravated also because of the complex events linked to the various passages of property, of private and public nature, which have strongly influenced the management of the monument. The study of the castle of Arnara is part of the national and international debate that considers participation a key factor for the sustainable enhancement of the cultural heritage, because it promotes greater awareness of its social and economic value. The objective of the research work is to develop, taking the castle as a case study, a new approach that sees cultural heritage (tangible and intangible) as an irreplaceable heritage of knowledge and as a precious resource for economic growth, employment and social cohesion; therefore a cultural heritage seen as a driving force. In the specific case of Colonna Castle, attention has been focused on the importance of being able to activate virtuous circles around this very important place of culture, enhancing its role as a centre of knowledge and incubator of creativity and social innovation.

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