ANALYSIS OF THE TEMPERATURE FIELD IN A MOLD CAVITY FOR POLYMER INJECTION PROCESS

A common situation in the design of injection molds is to achieve an efficient performance in terms of heat transfer, this will allow a higher production rate with better finished parts [1]. One of the most important factors in the design is the cooling time: about 80% of the processing time is determined by it [2]. Seeking to contribute with the increase of productivity, this work presents results of simulations through the finite volume method (MVF) of the injection molding process; those results are compared with an analysis of design of experiments (DOE) with different injection conditions, revealing the study variables that are fundamental to improve the process. Thus, a statistical analysis and a computer simulation analysis are presented to identify the variables inherent to the process and recommend their values.

Application of civil law in the regulation of labour relations

The article presents an analysis of situations in which civil law is applied in the regulation of labor relations. The authors note that civil law is applied in the regulation of labor relations in several cases. The most common situation is the reference rules provided for by the Labor Code of the Russian Federation itself, which directly provides for situations in which the courts can apply civil law rules when regulating labor relations. In some cases, if there is a gap in law, the courts apply the norms of the Civil Code of the Russian Federation when considering labor disputes, filling the gaps in the regulation of labor relations. In a number of cases, the Labor Code of the Russian Federation adopted civil law structures, although in this case it is no longer possible to talk about the application of civil law norms, since in the case of transferring these structures to the Labor Code of the Russian Federation, they become labor law norms. Also, in practice, there are situations when, simultaneously with labor relations, other relations arise, including civil law relations. In these cases, the courts also apply civil law. The authors describe these situations, give examples from judicial practice, and also propose ways to solve the defects arising in the regulation of labor relations.

Monitoring and Security of Fiber Optic Lines in Cloud Computing within the Operation of Remote Laboratories

<p class="0keywords"><em>In this article, we want to point out what security and monitoring of fiber optics are.</em> <em>By increasing the number of RLs and, of course, connecting several locations through FO, we were able to build a cloud solution with a high level of security. However, the distance between the Datacentres (DTCs) is often large and there are many pitfalls on the road associated with the operation of the optical path, so we were forced to find a suitable monitoring solution. The main problems described are the bending or kinking of the optical fiber as well as the need for monitoring the safety of the fiber at the lowest level. In this article, we will describe how we have dealt with this issue and we will also mention specific cases where our monitoring system was very useful for us. With the help of it, we eliminated problems faster than we could have done in a common situation while waiting for an Internet Service Provider (ISP), etc.</em></p>

Singapore Teochew as a heritage language

Situated in Southeast Asia, Singapore’s sociolinguistic situation has undergone several changes due to active language planning policies, with English and Mandarin becoming the two socio-politically majority languages in Singapore society. Over time, this has led to the restricted usage of various non-Mandarin dialects, including Teochew, both in public settings and within the home. This paper examines how Teochew, a heritage language in Singapore, has been affected in its vocabulary usage in apparent time. The data was collected from 41 Teochew male and female speakers aged 12–86 years. This paper contributes theoretically by showing the properties of a heritage language, Singapore Teochew, in an environment with multiple shifts of several major languages in Southeast Asia, instead of the more common situation of one major language shift.

INTERACTION OF CLOTHING IN THERMOREGULATION IN THE CASE OF PRETERM INFANTS

The paper presents a study about the thermoregulation in the case of premature babies and the importance and influence of their clothing in this complex process. The temperature of premature babies has to be between 36.5 - 37.5°C but, hypothermia (axillary temperature <36.5°C) is a common situation. This is primarily due to a large surface area and metabolic mass ratio that results in heat loss. Hypothermia among new-borns is considered an important contributor to neonatal morbidity and mortality. In this context, it has been identified that clothing products are recommended to maintain the optimal body temperature for those born prematurely. The elaborate clothing products aim at maintaining a thermal comfort and certain physiological indicators. Skin temperature and tactile sensations also play an important role in the growth and development of premature babies. In this regard, 15 premature infants were used as study subjects and their temperature profile was recorded. The proposed clothes aimed to maintain the baby's temperature in the normal range and provide a pleasant aesthetic appearance, while helping to improve the medical manipulations to which these children are subjected.

SPPD: A Novel Reassembly Method for 3D Terracotta Warrior Fragments Based on Fracture Surface Information

As one of China′s most precious cultural relics, the excavation and protection of the Terracotta Warriors pose significant challenges to archaeologists. A fairly common situation in the excavation is that the Terracotta Warriors are mostly found in the form of fragments, and manual reassembly among numerous fragments is laborious and time-consuming. This work presents a fracture-surface-based reassembling method, which is composed of SiamesePointNet, principal component analysis (PCA), and deep closest point (DCP), and is named SPPD. Firstly, SiamesePointNet is proposed to determine whether a pair of point clouds of 3D Terracotta Warrior fragments can be reassembled. Then, a coarse-to-fine registration method based on PCA and DCP is proposed to register the two fragments into a reassembled one. The above two steps iterate until the termination condition is met. A series of experiments on real-world examples are conducted, and the results demonstrate that the proposed method performs better than the conventional reassembling methods. We hope this work can provide a valuable tool for the virtual restoration of three-dimension cultural heritage artifacts.

A STUDY OF SOLVING SYSTEM OF LINEAR EQUATION USING DIFFERENT METHODS AND ITS REAL LIFE APPLICATIONS:

Solving a system of linear equations (or linear systems or, also simultaneous equations) is a common situation in many scientific and technological problems. Many methods either analytical or numerical, have been developed to solve them so, in this paper, I will explain how to solve any arbitrary field using the different – different methods of the system of linear equation for this we need to define some concepts. Like a general method most used in linear algebra is the Gauss Elimination or variation of this sometimes they are referred as “direct methods “Basically it is an algorithm that transforms the system into an equivalent one but with a triangular matrix, thus allowing a simpler resolution, Other methods can be more effective in solving system of the linear equation like Gauss Elimination or Row Reduction, Gauss Jordan and Crammer’s rule, etc. So, in this paper I will explain this method by taking an example also, in this paper I will explain the Researcher’ works that how they explain different –different methods by taking different examples. And I worked on using these different methods in solving a single example, i.e. I will use these methods in an example. In this paper, I will explain the real-life application that how a System of Linear Equation is used in our daily life.

Design and Development of an Android App Based on Firebase in the Study of Unsportsmanlike Behaviors in Grassroots Tennis Competitions

This paper presents the design, development and evaluation of an android application based on the Google Firebase platform aimed to facilitate the creation of questionnaires and collection of data for the management of sports and unsportsmanlike behaviors in grassroots tennis competitions. Although sportsmanship among players is the most common situation, in low categories sometimes aggressive or violent situations may occur and not always with the presence of referees. In recent years, the use of conventional questionnaires has been the most widespread tool to obtain information on sports and unsportsmanlike behaviors in sports competitions. The developed system allows tennis tournament organizers to easily create forms linked to the players in order to evaluate different psychological aspects during the competition. Players are notified and they answer the proposed questions on their mobile devices at the end of the matches. By using the application it is easy to collect the responses of the competitors and process and evaluate them. The developed system is based on a client-server architecture where the Firebase platform acts as system server and the application is the client that communicates with it. The application was validated by a tournament administrator showing a high level of usability. Afterwards it has been tested in a real tournament with 20 players (in a total of 34 matches) answering a form consisting of 13 questions to evaluate sports and unsportsmanlike behaviors. The results in this pilot tournament showed the perception of sportsmanship of the players as very good, but also showed that parents or companions interfere in children’s matches and two potential cases of unsportsmanlike conduct were detected. This system may become a versatile and useful tool for improvement of players’ psychological wellbeing during grassroots tennis competitions.

Secure Remote Storage of Logs with Search Capabilities

Along with the use of cloud-based services, infrastructure, and storage, the use of application logs in business critical applications is a standard practice. Application logs must be stored in an accessible manner in order to be used whenever needed. The debugging of these applications is a common situation where such access is required. Frequently, part of the information contained in logs records is sensitive. In this paper, we evaluate the possibility of storing critical logs in a remote storage while maintaining its confidentiality and server-side search capabilities. To the best of our knowledge, the designed search algorithm is the first to support full Boolean searches combined with field searching and nested queries. We demonstrate its feasibility and timely operation with a prototype implementation that never requires access, by the storage provider, to plain text information. Our solution was able to perform search and decryption operations at a rate of, approximately, 0.05 ms per line. A comparison with the related work allows us to demonstrate its feasibility and conclude that our solution is also the fastest one in indexing operations, the most frequent operations performed.

On the violation of the zeroth law of turbulence in space plasmas

The zeroth law of turbulence states that, for fixed energy input into large-scale motions, the statistical steady state of a turbulent system is independent of microphysical dissipation properties. This behaviour, which is fundamental to nearly all fluid-like systems from industrial processes to galaxies, occurs because nonlinear processes generate smaller and smaller scales in the flow, until the dissipation – no matter how small – can thermalise the energy input. Using direct numerical simulations and theoretical arguments, we show that in strongly magnetised plasma turbulence such as that recently observed by the Parker Solar Probe spacecraft, the zeroth law is routinely violated. Namely, when such turbulence is ‘imbalanced’ – when the large-scale energy input is dominated by Alfvénic perturbations propagating in one direction (the most common situation in space plasmas) – nonlinear conservation laws imply the existence of a ‘barrier’ at scales near the ion gyroradius. This causes energy to build up over time at large scales. The resulting magnetic-energy spectra bear a strong resemblance to those observed in situ, exhibiting a sharp, steep kinetic transition range above and around the ion-Larmor scale, with flattening at yet smaller scales. The effect thus offers a possible solution to the decade-long puzzle of the position and variability of ion-kinetic spectral breaks in plasma turbulence. The existence of the ‘barrier’ also suggests that, how a plasma is forced at large scales (the imbalance) may have a crucial influence on thermodynamic properties such as the ion-to-electron heating ratio.