Installation Of Equipment Research Articles

Sekolah Hijau: Inovasi Single Axis Solar Tracking System Dengan Sensor LDR Sebagai Alternatif Energi Listrik

Indonesia as a tropical country has enormous potential to develop renewable energy with the help of technological advances to produce and develop more environmentally friendly energy. Because it is clean without waste gas and has few moving components, the use of solar cells or sunlight is very popular and is one way to convert solar energy into electrical energy. Schools that lack electrical power for teaching and learning activities can apply one of these methods of using solar energy. The partner of our service is the Dharma Pala Medan Private Elementary School, with a total of 38 students and a total of 6 teachers. The methods/stages of activities include partner surveys, program planning, outreach, designing and assembling a solar tracking system, equipment installation, partner education, and gradual program evaluation. The method used for data collection was interviews with teachers and students. The intensity of lighting in learning has a close relationship with eye fatigue so that it will interfere with learning concentration which will have an impact on students' interest in learning. Environmental factors such as lighting can have a positive and significant impact on a person's level of boredom

Construction of Safety Risk Assessment Index System for Mechanical and Electrical Equipment Installation Engineering

Construction of Safety Risk Assessment Index System for Mechanical and Electrical Equipment Installation Engineering

A review of Kilovoltage (kV) Radiotherapy Treatment in the UK: Quality Control, Radiation Dosimetry, Treatment Equipment and Workload.

To survey kilovoltage (kV) radiotherapy in the UK, updating a 2016 study, focussing on radiotherapy physics, including equipment quality control (QC) and radiation dosimetry, with information on installed equipment and clinical activity. All UK radiotherapy physics departments (n = 68) were invited to complete a comprehensive survey. An analysis of the installed equipment base, patient numbers, clinical activity, QC testing and radiation dosimetry processes were undertaken. 91% of centres (n = 62) responded to the survey. kV radiotherapy was available in 70% of UK radiotherapy departments, with a wide variation in workload; 7 to 436 patients/centre annually. There has been an increase in the centres using treatment calculation software rather than manual methods, up from 36% in 2016 to 50% in the current study. Only 50% of centres use a calculation check method different to the primary method. There was also an increase in use of the addendum to the UK dosimetry code of practice, enabling medium energy calibration in-air rather than at depth in phantom, citing "clinical relevance". Appropriate levels of quality control testing were being conducted at UK centres, with IPEM Report 81 cited as a primary source of guidance. Good consensus for the frequency and tolerance values used for QC was seen across UK centres. A comprehensive review of consensus practice for quality control and dosimetry in kV radiotherapy across the UK is presented, with supporting information on equipment installation and clinical use. Updated data is presented on kV radiotherapy treatment in the UK, with focus on physics aspects of QC and dosimetry.

Simulation Research on Data Acquisition and Supervisory Control System of Distribution Network Based on Vector Regression Model

With the gradual maturity of deep learning and the Internet of Things, a smart grid is urgently needed to be established. For the intellectualization of the power grid, non-intrusive load monitoring (NILM) technology is the key step of intellectualization. The traditional load monitoring method is an invasive scheme, in which monitoring sensors are usually installed at the output end of each grid load. This method requires a lot of manpower and material resources in terms of equipment installation and maintenance, which is difficult to sustain. Therefore, monitoring electrical appliances are installed at the entrance of the distribution network to decompose the classification and operation status of the individual electrical appliances in the grid. Aiming at the problem of long-term multi-state electrical apparatus monitoring, this paper mainly optimizes the two optimal deep learning models Seq2Seq and WindowGRU based on activation function optimization, regular function optimization and neural network structure optimization. PReLU, Leaky-ReLU and ELU are used and tested. For the optimization based on regular functions, the value of F1-score is 0.9700, which is 0.1534 more than the optimization algorithm Seq2SeqLR in this paper. Meanwhile, it can also reach 0.8100 for other devices, which is 0.2373 more than the nilmTCN designed in this paper. The Recall value of the identification is improved to 0.6673, which is significantly higher than that of other models. It is proved that the research contents of this paper can improve the effective analysis of load energy consumption data, and can minimize unnecessary energy consumption to achieve the purpose of saving electricity.

The Spatial Relationship Between Risk and Vulnerability Associated with Particulate Matter

This study presented an effective decision-making support plan for air-quality policy through a spatial analysis of the risks and vulnerabilities associated with particulate matter. The study defined the risks and vulnerabilities of particulate matter operationally, mapped Cheongju-Si as a case study, interpreted the spatial relationship between risk and vulnerability, and explored policy implications. New urban areas with a high proportion of industrial areas and adjacent to new housing estates and schools and old urban areas with low ground levels, a low proportion of urban parks, and a high concentration of old houses were identified as areas for priority management. The identified areas may be candidates for high-concentration intensive management and may be considered priority areas for the installation and distribution of emission-reduction equipment and the implementation of projects to support vulnerable groups. This study’s findings may be used as a basis for establishing both spatial environmental policies for the air sector in the integrated management of the land environment and air environmental policies that consider health equity.

RISK ASSESSMENT USING THE MATRIX METHOD FOR THE JOB "POWER LINE FITTER" IN A BUSINESS ENTITY

<p style="text-align: justify;">The assessment of workplace hazards involves recognizing the likelihood of occurrence and the severity of potential injuries or occupational diseases to employees. The risk assessment is performed by a team of experts from various scientific and professional fields to objectively evaluate the attributive and/or numerically expressed level of risk, which will inform the employer and the employee about the extent of exposure to a harmful event. In this paper, the risk assessment of one workplace "Power line fitter" in a business entity was carried out, using the qualitative matrix method. The risk assessment for the mentioned workplace showed that it is a workplace with a medium risk of working at height, the danger of direct contact with parts of the electrical installation and live equipment, and harmful climatic influences - work in an open space, which was confirmed by the use of other risk assessment method.</p>

In-situ analysis of an intermodular connection for segmented offshore platforms

In recent years, oil production in the México has decreased. As a result, there is a need for the installation of new offshore platforms, both in currently exploited fields and in future fields. Consequently, it is necessary to design, construct, and install platforms that optimize costs and reduce construction and installation times. To address this, the proposal involves the installation of these structures in segments, with connections made using bolted joint connections that are secure under in situ loading conditions. Under these loading conditions, analysis is conducted through finite element modeling, demonstrating appropriate behavior according to the requirements of current regulations. The implementation of this solution offers an alternative for the installation of offshore platforms, which largely depend on the availability of installation equipment with capacities exceeding 800 tons

An effective method for strengthening steel beams and purlins using an elastic support in the span

The article is devoted to the development of theoretical approaches to strengthening bending elements, such as beams and girders, through the installation of an elastic support at the midpoint of the span where the maximum bendingmoment occurs, as well as the development of a practical calculation method for such reinforcement. The need for strengthening may arise under various conditions, including prolonged operation beyond the design lifespan, increased service loads on existing structures, wear and tear of structures, or damage caused by episodic additional loads (e.g.,earthquakes, explosions). The purpose of the study is to provide a practical method for reinforcing girders and beams using an elastic support at the span to increase the load-bearing capacity of structures under increased loads (e.g., installation of solar power stations or other additional equipment on roofs) or in cases of damage caused by explosions or other episodic loads that reduce the cross-sectional geometric characteristics and require rapid strengthening. The article proposes a calculation methodology for this type of reinforcement that addresses shortcomings in existing scientific and technical literature and facilitates the broader implementation of the method to enhance the reliability of structures.The article presents an effective method for reinforcing girders and beams in response to increased loading. Using an elastic support (brace) at the span enhances the load-bearing capacity of structures.The method involves installing a brace under the element to be strengthened, secured with additional bolts to create an elastic support that reduces the applied load. This solution eliminates the need for welding or disrupting the structural integrity. Atechnological gap is provided to create pre-stressing, which is closed during bolt tightening. The main advantages include minimal intervention, pre-stressing creation, and increased structural reliability. The article contains a calculation methodology for this reinforcement method, promoting its practical application to improve the efficiency and reliability of structures.The proposed reinforcement method is demonstrated on steel structures but can be extended, if necessary, to structures made of other materials, such as wood or reinforced concrete.

CALCULATION OF THE SEISMIC RESISTANCE OF THE START-UP AIR SYSTEM OF RDES

The earth beneath our feet is alive, even though it is a rocky planet. Despite the fact that geological activity cannot be felt, sometimes it manifests itself sharply and dangerously. Earthquakes and seismic phenomena are responsible for the transmission of these tectonic shocks and have forced people to be prepared for different situations with the oscillation of the earth's crust. Seismic shocks cause many dangerous phenomena: landslides and avalanches in the mountains, flood waves (tsunamis) on the shores of seas and oceans, cracks and liquefaction on the land surface. Depending on the magnitude of the earthquakes, each year there are from one to two dozen earthquakes with a power of more than 7 points according to the Richter scale. How can the destruction of building equipment, disasters and deaths be prevented and what is "seismic resistance" is the question of our research. In order to confirm that the equipment is guaranteed to perform its functions under seismic conditions, equipment qualification is performed. The assessment of the initial state of seismic qualification consists in comparing the seismic qualification characteristics with the seismic qualification requirements, as well as establishing the availability of information in the factory and project documentation regarding the fastening of the equipment, and allows to establish whether the qualification requirements presented in the process of seismic qualification were taken into account during development and staging for production, manufacturing and installation. Seismic qualification characteristics are contained in the design documentation of equipment developers and manufacturers and can be specified in different forms: values of acceleration amplitudes; the intensity of the earthquake and the level of installation of equipment above the zero mark; test parameters, mechanical performance groups, etc. If the qualification characteristics of the equipment meet the defined or calculated qualification requirements, then the qualification of such equipment for earthquake resistance is established.

INSTALASI PEMBUMIAN DAN INSTALASI LISTRIK MUSHOLA AL MUTTAQIIN TEMBESI KIBING-BATU AJI BATAM

The condition of the electrical installation system in people's homes and especially places of pray (Mushola) in Tembesi Kalurahan Kibing, Batu Aji District, Batam City, most people still do not understand about electrical installations and there are still many things that do not comply with general regulations regarding electrical installations, apart from There are still many electrical installation connections carried out by the community themselves which do not comply with the provisions. Community service by providing counseling and going directly to see the location that is the target for carrying out service activities, namely the Al Muttaqiin prayer room. By holding community service (PKM), residents of Kibing Village will understand how to install electricity properly, correctly and safely. The equipment selected for installation in an electrical installation must meet applicable standards and must be suitable for its environment. Installation of equipment must comply with the provisions in PUIL, and match the equipment manufacturer's instructions. Electrical installations must be regularly inspected and tested for misuse, damage or poor installation, including loose connections. To protect against leakage currents, grounding and ELCB can be installed.In order to achieve an increase in public knowledge and understanding about the importance of electrical hazards, this activity needs to be sustainable

Design and optimization analysis of key parameters for a compact ion source for BNCT

The 2.45 GHz Electron Cyclotron Resonance Ion Source (ECRIS) is widely recognized as an effective device for producing high-intensity H+, H2 +, and H3 + beams. In medical cyclotron applications, ion sources are required to be compact and highly adjustable. A compact design not only reduces the equipment size, facilitating integration and installation, but also enhances system stability and reliability. High precision in adjustment ensures the quality and stability of the ion beam, meeting the stringent requirements of medical treatments. Therefore, designing a high-performance compact ECR ion source is crucial for improving the performance and efficiency of medical cyclotrons. In this study, we designed an ECR ion source with a discharge chamber radius of only 25 mm and investigated its plasma formation using a three-dimensional model. We explored the effects of different microwave window positions on the extracted beam current, calculated, and determined the optimal position. Additionally, we studied the variations in the fractions of H+, H2 +, and H3 + ions in the chamber with respect to pressure and microwave power, and discussed the plasma processes within the ECR ion source chamber based on these findings.

Effect of Venting Equipment Installation on Oil Production Stability

Electric Submersible Pumps (ESPs) are one of the most prominent artificial lifting methods in the oil and gas industry today. In the operation of Electric Submersible Pumps on wells in the Ko-Pet field, a gas lock may occur when liquid and gas separate in the tubing above an electric submersible pump and inside the pump. This study aims to determine the effect of installing venting equipment on oil well production. Venting equipment was installed in three oil wells: KI090, KI183, and KI495 in the Ko-Pet oil field. From the production data, it was found that the installation of Venting Equipment affected production stability, namely by increasing the fluid that could be pumped by the ESP to the surface facility. The installation of venting equipment increased oil production by 1251 barrels or an increase of 8%. Electrical Submersible Pump performance was more stable because the gas lock problem can be overcome by continuously releasing the casing pressure with venting equipment.

LCRTR-Net: A low-cost real-time recognition network for rail corrugation in railway transportation

Rail corrugation has a significant impact on the safety of high-speed railway operations, making its identification particularly important. Traditional manual inspection methods are infeasible for large-scale identification within limited time frames, while existing methods based on machine vision or axle box acceleration face challenges such as high costs, complex equipment installation and maintenance, as well as difficulties in achieving real-time performance. To address these challenges, this study proposes an innovative low-cost real-time recognition network (LCRTR-Net), which utilizes accelerometers installed on the underside of the train body and combines wavelet packet decomposition with dilated causal convolution in a residual neural network. Specifically, the approach first extracts the latent features of train body acceleration caused by rail corrugation through wavelet packet decomposition and reconstruction. Next, dilated causal convolution is employed to capture the temporal causal relationships and long-term dependencies of these latent features. Finally, the integration of residual connections further enhances the feature extraction performance and computational efficiency of LCRTR-Net. Experimental results demonstrate that LCRTR-Net exhibits significant generalization ability and real-time performance, achieving an average recognition accuracy exceeding 97.0%, with a recognition time of only 0.17 ms per rail corrugation sample, significantly outperforming existing rail corrugation recognition methods. This indicates that LCRTR-Net has broad application potential in practical railway operations. Future research directions will focus on unsupervised or few-shot learning algorithms and multi-sensor integration to further improve recognition accuracy and real-time performance, promoting the practical application of this technology.

Accounting of income and expenses from the provision of services in conditions of instability

Introduction. The importance of the field of electronic communications is substantiated and it is indicated that this is due to the growing requirements for the quality, speed and efficiency of the provision of services. The procedure for recognition and display of income and expenses from the provision of services has been studied. Purpose. The purpose of the study is to analyze strategic directions for improving the quality of service provision. Methodology.Research methods are qualitative and descriptive, observation, documentation. The main results of the study. The field of electronic communications faces a shortage of investments in the development of infrastructure, a high level of costs for the laying of telecommunications lines and the installation of modern equipment, a decrease in the solvency of service consumers and the lack of an adequate level of customer service, an uneven load in different periods of the day, which requires the coordination of regulatory and legal acts and application of world standards. Conclusions and prospects for further exploration. Companies working in the field of electronic communications must conduct a detailed analysis of the potential of individual components and activities in general, which will make it possible to develop the most optimal model of the communication operator’s activity and mathematically establish the result that can be influenced and quickly adapted to the introduction of new types of services. It should be noted that the services market is characterized by a tendency of gradual displacement of fixed communication and its replacement by mobile communication. Thus, research should be focused on new products in the field of electronic communications, accountingestablishing optimal tariffs, creating investment attractiveness of such an important field of activity both for the state and for individual consumers. A detailed analysis of the requirements and standards that determine the procedure for accounting for income and expenses indicates the need for further research in this direction.

Evaluation of Pain During Hysteroscopy Under Local Anesthesia, Including the Stages of the Procedure.

Hysteroscopy is an endoscopic diagnostic and therapeutic method traditionally performed under general anesthesia but increasingly under local anesthesia. Today, it is considered the gold standard in gynecology. This minimally invasive procedure allows for a detailed assessment of the uterine cavity's interior and the removal of abnormal changes within it and is applicable to patients of all ages. Background/Objectives: The purpose of the present study was to evaluate pain during hysteroscopy under local anesthesia at different stages of the procedure, identifying which stage is the most painful (GUBBINI Mini Hystero-Resectoscope; Tontarra Medizintechnik, Tuttlingen, Germany). Methods: The study included patients between the ages of 21 and 80 years. They were divided into two groups: the diagnostic hysteroscopy (HD) and the operative hysteroscopy (HO) groups. Pain measurements on the VAS scale were taken at each stage of the hysteroscopic procedure. After each stage, the operator asked the patient to indicate the maximum perceived pain value: after pericervical anesthesia was administered (VAS1), during the installation of equipment (between the removal of the speculum and the insertion of the hysteroscope into the vagina) (VAS2), after insertion of the hysteroscope and visualization of the external orifice of the cervical canal (VAS3), after passage of the hysteroscope through the cervical canal (VAS4), and after completion of the procedure in the uterine cavity (VAS5). The duration of each stage of the procedure was measured with a stopwatch: administration of pericervical anesthesia (T1), time between the removal of the speculum and the insertion of the hysteroscope into the vagina (T2), insertion of the hysteroscope into the vagina until the outer orifice of the cervical canal became visible (T3), passage of the hysteroscope through the cervical canal (T4), and the hysteroscopy procedure itself (T5). Results: The highest pain rating was for the canal passage stage (VAS4: 2.47 ± 2.48 points), followed by the procedure itself (VAS5: 2.12 ± 2.33 points). Anesthesia was also reported as quite painful, while the lowest pain was noted during the assembly stage. Overall pain scores for the entire procedure (VASmax) ranged from 3.5 ± 2.37. Conclusion: In conclusion, we found that the passage through the cervical canal was the most painful moment. Overall, hysteroscopy under pericervical anesthesia was not associated with significant pain. Special attention should be given to postmenopausal patients, as they experience more pain during the passage of the hysteroscope through the cervical canal. This group may benefit from additional pain management strategies during the procedure.

Design of a calibratable optical antenna system based on ring array light source

Abstract This study presents a multi-wavelength, multi-channel, and high-capacity optical antenna system. This approach is intended to allow parallel transmission with many channels and wavelengths by employing a ring array of vertical-cavity surface-emitting lasers, with reception accomplished via a ring detector array. The system employs spatially multiplexed techniques to send the target with numerous independent signals at the same time, effectively increasing bandwidth and reducing signal interference. The method used in this design provides benefits such as effective decreasing losses caused by blocking and removing aberrations. To overcome the spatial alignment difficulty caused by the array light source’s tiny beam size during long-distance transmission, this study introduces a high-precision acquisition, pointing, and tracking system as a reverse communication channel. The system’s wide beam can be used to align the installation of optical antenna equipment and facilitate information transmission.

IoT-Enabled Fire Alarm System with Cloud-Based Storage and Monitoring

Abstract: The purpose of a fire alarm system is to warn us of an emergency so that we can take precautions to safeguard ourselves, our employees, and the public. However, modern fire alarm systems require a significant amount of wiring and labor during installation. The most frequent issues that was encountered during monitoring commercial and residential fire alarm systems are false alarms, inappropriate installation, lost connections, malfunctioning or aged equipment, and careless maintenance that discouraged users from putting them in their houses as a result. Hence, the researcher developed an IoT-based fire alarm system connected to several types of sensors and micro-controller distributed over the building and house. Each of these nodes is made up of an Arduino microcontroller that is coupled with smoke, temperature, humidity, flame, methane, and carbon monoxide (CO) sensors. Thus, an innovative system is designed with the help of Internet of Things (IoT) that records live reading of sensors and stored in cloud interface which also lessens the investigation process of the authorities concerned. Results shows that majority of the evaluators responded to the functionality of the proposed system to be Superior and provide all the functionality required for the system to detect and prevent fire occurrences.

Information and Technology Governance Capability Analysis Using COBIT 2019: Case Study of CV Wirelessindo

The implementation of IT supports company sustainability. Large companies use IT as an integral part of their business model. Digital strategies must align with business strategies to achieve sustainability. Wirelessindo, established in 2007, provides IT solutions such as equipment, site surveys, network design and security, and tower installations. Its mission is to increase company productivity to win the competition in the era of Industry 4.0. IT is used to enhance customer service and internal business process efficiency. Initial investigations found issues with IT function mismatches, financial losses due to data loss, errors in IT equipment installation and configuration, and business process incidents caused by emerging risks. Identified root problems include employee knowledge gaps, risk management disparities, errors in defining business needs, and change management gaps. Based on these findings, IT governance evaluation was chosen as the research focus. This study aims to provide an overview of CV Wirelessindo IT capability levels and recommendations for improvements to meet expected levels. COBIT 2019 were used in this study. The General Manager, IT Division Manager, Software Development Team, Network Monitoring Team, Project Manager, and HR Manager were selected as respondents based on the Responsible, Accountable, Checked, Informed chart guidelines. Of the nine selected objectives, BAI08 showed level 0. APO12, BAI02, BAI06, BAI07, and DSS01 showed level 1. APO07, BAI10, and DSS03 showed capability level 2. Therefore, 61 recommendations were provided to raise the IT governance capability level to level 3 for all objectives.

CLOWN: The PASO Cloud Detection for Optimization of Automatic Optical Surveys

Orbiting space objects have become in the last decade a major nuisance impacting ground astronomy and orbiting space assets, from observatories to satellites and space stations. In particular with the rise of the satellite population in Low Earth Orbits, space objects are becoming an even bigger threat and a strong problem to astronomical observations. To tackle these threats, several coordinated surveillance networks composed of dedicated sensors (telescopes, radars, and laser ranging facilities) track and survey space objects, from debris to active satellites. As part of the European Space Surveillance & Tracking network, Portugal is developing the Pampilhosa da Serra Space Observatory, with both radio and optical telescopes dedicated to the Space Situational Awareness domain, deployed at a Dark Sky destination. To optimize telescope survey time, we developed CLOud Watcher at Night (CLOWN), an application interface that automatically monitors clouds in real time. This software can correctly trace cloud positions in the sky and provide accurate pointing information to the observation planning of the optical telescope to avoid cloudy areas. CLOWN only requires the use of an all-sky camera, which is already a norm in observatories with optical telescopes and can be used with any camera, including those for which no information about its model specification do exist. CLOWN does not require great computing power, and it does not require the installation of additional equipment. CLOWN results are very promising and confirm that the app can correctly identify clouds in a variety of different conditions and cloud types.

Effects of wire rope isolators on seismic life-cycle cost of UHV bypass switch

The seismic isolation devices reduce the seismic vulnerability of the electrical equipment. Accurately assessing the seismic life-cycle cost (SLCC) of the electrical equipment is beneficial in guiding the design and enhancing the seismic resilience of electrical substations and converter stations. To evaluate the effects of the isolator devices on the seismic life-cycle cost of electrical equipment, a SLCC evaluation model was proposed in this study, and the evaluation was conducted on an ultra-high voltage (UHV) bypass switch (BPS) with wire rope isolators (WRI). The model takes into account equipment purchase, maintenance, transportation and installation costs and indirect losses caused by power outages. Afterward, the SLCC and break-even time of the UHV BPS with and without WRIs in different regions were analyzed. The results indicate that beyond the break-even time, the BPS with WRIs becomes more economically viable. Moreover, its economic viability increases as the service life extends. Therefore, in high seismic cost risk areas, it is recommended to adopt seismic isolation devices to ensure the secure and economically efficient operation of electrical equipment.