Technical Office Research Articles

The technical consultancy office in the evaluation of dental trauma from a road accident

The technical consultancy office in the evaluation of dental trauma from a road accident

Comparison of numerical calculations and ALOHA modeling in consequence assessment of chlorine gas emissions from ethylene dichloride reactors.

Incidents involving chemical storage tanks in the petrochemical industry are significant events with severe consequences. Within the petrochemical industry, EDC is a sector that produces ethylene dichloride through the reaction of chlorine and ethylene. The present research was conducted to evaluate the consequences of chlorine gas released from the EDC reactor in a petrochemical industry in southern Iran. Data regarding reactor specifications were obtained from the factory's technical office, while climatic data was acquired from the Meteorological Organization. The consequences of chlorine gas release from the reactor were assessed in four predefined scenarios using numerical calculation methods and modeling with the ALOHA software. The numerical calculation method involved thermodynamic fluid path analysis, discharge coefficient calculations, and wind speed impact analysis. The hazard radius was determined based on the ERPG1-2-3 index. Results showed that in the scenario of chlorine gas release from EDC reactors, according to the ALOHA model, an increase in wind speed from 3 to 7m/h led to an expanded dispersion radius. At a radius of 700m from the reactor, the maximum outdoor concentration reached 3.12ppm, decreasing to 2.27ppm at 800m and further to 1.53ppm at 1000m. The comparison of numerical calculations and modeling using the ALOHA software indicates the desirable conformity of the results with each other. The R2 coefficient for evaluating the conformity of the results was 0.9964, indicating the desired efficiency of the model in evaluating the consequences of the release of toxic gasses from the EDC tank. The results of this research can be useful in designing the site and emergency response plan.

Transformation of an Industrial Zone Into an Urban Park: Reconstruction of Buildings

Statement of the problem. To solve the problem of shortage of land resources in the territory of modern cities, a promising direction is the redevelopment of derelict manufacturing plants, including the reuse of unexploited industrial buildings for cultural and commercial purposes. The main task of the Changchun Vanke Blue Mountain project (Jilin Province, China) presented in this article was to maximize the preservation of cultural heritage and the unique atmosphere of the industrial zone while creating an entertainment park. Results. The article describes the technical solutions that made it possible to implement this concept as part of the buildings’ reconstruction of the gear wheel manufacturer and the stamping shop with the technical office. Not only the preservation of ruins was implemented, but also the maximum possible rehabilitation of buildings using original building materials, along with the addition of new annexes built in a modern style. The features of the main street design with an emphasis on the architectural components of reconstructed buildings are provided. Conclusions. The implementation of the Changchun Vanke Blue Mountain project made it possible to popularize the history of the former plant, to show its crucial role in the formation of the city. At the same time, it was possible to create original architectural solutions using modern methods of architectural reconstruction of industrial facilities.

The Effects of Knowledge Management Capabilities and Information Technology Capabilities on Organizational Agility and Their Impact on Organizational Performance in Technical Implementation Units and Service Branches of the East Java Provincial Government

The performance of the Technical Implementation Unit and Office Branches of the East Java Province is an indicator of the success of the implementation of development and governance, especially in public services. The purpose of this research is to describe knowledge management capabilities, information technology capabilities, organizational agility and organizational performance, to analyze the effect of knowledge management capabilities, information technology capabilities and organizational agility, to analyze the effect of knowledge management capabilities and information technology capabilities on organizational performance, to analyze the effect of organizational agility on organizational performance and analyze the effect of knowledge management capabilities, information technology capabilities on organizational performance through organizational agility. The data analysis technique used is Descriptive Analysis and SEM (Structural Equation Modeling). The results of the study show that knowledge management capabilities have the greatest contribution to knowledge application. Information technology capabilities have the greatest contribution to IT proactive stance. Organizational agility has the biggest contribution to Quickness. Organizational performance has the greatest contribution to the learning and growth process perspective. Knowledge management capabilities, information technology capabilities affect organizational agility. Knowledge management capabilities, information technology capabilities can affect organizational performance. Organizational agility is needed in organizations that have knowledge management capabilities and information technology capabilities in order to improve organizational performance.

A SARS-CoV-2 outbreak in a plastics manufacturing plant

BackgroundA SARS-CoV-2 outbreak with an attack rate of 14.3% was reported at a plastics manufacturing plant in England.MethodsBetween 23rd March and 13th May 2021, the COVID-OUT team undertook a comprehensive outbreak investigation, including environmental assessment, surface sampling, molecular and serological testing, and detailed questionnaires, to identify potential SARS-CoV-2 transmission routes, and workplace- and worker-related risk factors.ResultsWhile ventilation, indicated using real-time CO2 proxy measures, was generally adequate on-site, the technical office with the highest localized attack rate (21.4%) frequently reached peaks in CO2 of 2100ppm. SARS-CoV-2 RNA was found in low levels (Ct ≥35) in surface samples collected across the site. High noise levels (79dB) were recorded in the main production area, and study participants reported having close work contacts (73.1%) and sharing tools (75.5%). Only 20.0% of participants reported using a surgical mask and/or FFP2/FFP3 respirator at least half the time and 71.0% expressed concerns regarding potential pay decreases and/or unemployment due to self-isolation or workplace closure.ConclusionsThe findings reinforce the importance of enhanced infection control measures in manufacturing sectors, including improved ventilation with possible consideration of CO2 monitoring, utilising air cleaning interventions in enclosed environments, and provision of good-quality face masks (i.e., surgical masks or FFP2/FFP3 respirators) especially when social distancing cannot be maintained. Further research on the impacts of job security-related concerns is warranted.

Analysis of Factors Affecting Employee Morale in the Technical Implementation Unit Office of the Singosari Revenue Agency, Malang Regency

Analysis of Factors Affecting Employee Morale in the Technical Implementation Unit Office of the Singosari Revenue Agency, Malang Regency

Evolución histórica del Instituto Geográfico Militar de Chile

The important growth and transcendence that cartography reached at the beginning of the 20th century, brought as a consequence the creation of an autonomous organization that would dedicate itself to such studies and works. That is why, in 1922, the Military Geographic Institute was created with the aim of being the official State entity, in charge of everything related to the cartography and survey of the national territory, giving continuity to the work previously carried out by the Office of Geography, Cartography and Topography, dependent on the technical office of the General Staff. But it is in the year 1955 where the elaboration of Conventional Cartography began by means of aero photogrammetric flights, with a totally analogous methodology. The passing of the years and the arrival of new technologies, allowed the Military Geographic Institute at the end of the 20th century and the beginning of the 21st century, to migrate all its analogical procedures to digital procedures, which allowed to increase the accuracy and speed in all the procedures, as well as solving calculation difficulties that directly intervene in Earth sciences and particularly in cartography. Today, 1:25,000 scale digital cartography is the main product generated at the IGM. The process began when satellite images and orthophotos with high resolution standards were acquired. From these, a 3D environment was generated that will be the basis of the photo-interpretation that makes up the geographic information.

Evaluation of Electric Power Losses on 33/11 kV Distribution Feeder Networks in Uyo Urban, Nigeria Using Loss Factor Approach

No matter how carefully a power system is designed, grid inefficiencies or load losses would happen, causing power unbalance between distribution and major load centers. It is therefore fundamental to clearly determine and identify electric power system losses for network improvement because of their financial-economic value to distribution companies and consumers. In this work, relevant data including monthly loading, feeder route length, and cross-sectional area of four 11 kV feeders namely, Aka, Ibrahim Babangida, Udo Udoma, and Idongesit Nkanga secretariat-dedicated feeders were obtained from the Port Harcourt Electricity Distribution (PHED) company technical office, Uyo, Nigeria for four years (January 2018 to December 2021) for the 33/11 kV Akwa Ibom State Secretariat Injection Substation and distribution feeder circuits. Average load, maximum load, load factor, loss factor, power losses in the feeders and total power loss in the system were computed and the results which were shown graphically revealed grid inefficiencies and power imbalance or losses which increased slightly on a yearly basis. The losses are due to heat dissipation, lack of maintenance of the power system components, transformer overloading, copper losses, core losses, lengthy feeder routes, and location/aging of the transformers. Suggestions were made in order to reduce further losses in the network.

Design of steel transmission pole base plates using yield line method

Steel transmission poles are widely used for their strength, ease of construction, small footprint, and aesthetic appearance. These poles can be either directly embedded into their foundations or supported on based plates which are connected to the reinforced concrete footings via group of anchor bolts.There are few available published methods for the analysis and design of this type of base plate connection. These methods are not widely used in the industry as they are either complex, lack solid theoretical background, or yield results that are not consistent with manufacturer's time-tested proprietary design methods. Therefore, there is a need for an accurate method suitable for technical or design office for designing these connections when subjected to axial loads, bending moments or the combined effect of both.This paper presents a numerical study performed on the base plates of polygonal steel poles that are supported directly on anchor bolts with levelling nuts and subjected to bending moment and axial load. The Finite Element (FE) analysis part of the work is carried out using ADINA software and the results obtained from the analyses are compared with published experimental results from which it is concluded that the finite element model can accurately predict the behaviour of these connections.Parametric investigation is then conducted to gain more insight into the behaviour of these base plate connections and to use the obtained data the validation of the proposed design method. The parametric investigation covered the behaviour of these connections under pure axial load and pure bending moment while the varying parameters considered included number of shaft sides, base plate thickness, number of anchor bolts and anchor bolt diameter.Design formulae based on the yield line theory are then proposed and a comparison between the yield loads calculated using the proposed expressions and finite element results is presented. The yield loads resulting from using the proposed design method agreed with the finite element results with a maximum calculated difference of 13%.

Technical-economic study of slope stabilization solutions in the Eastern Rif Region – Morocco

The purpose of this article is to establish a technical–economic study of slop reinforcement solutions. The results of which will be used by the various stakeholders in land use planning (ministry of interior and equipment, technical design office; Laboratories, etc.) in the Eastern Rif region-Morocco. To be chosen for each of the dominant soils in the study area: the best technically adopted stabilization solution and the least costly from an economist point of view among a variety of solutions.By analyzing the results of the cost estimates of the slope stabilization solutions studied, it turns out that the least expensive solution is that relating to the Geometric Modification of the slope since it does not require special implementation equipment. Nor expensive materials, which justifies the wide use of this solution in most slop reinforcement sites.However, it should be noted that this solution requires recurrent maintenance since the slope, although stable remains exposed to erosion agents (rain, wind …) which causes its frequent alteration (falling stone, and soil conglomerate, etc.), the recurring maintenance of which during its lifespan is expensive.Furthermore, this maintenance constitutes an obstacle for traffic on the main roads and railways or even a temporary shutdown, the economic consequences of which on the passenger and freight transport are exorbitant for the main axes connecting the ports and large agglomerations, hence the need to invest initially in solutions more effective and lasting stabilization, especially bored piles.

Assessing forest accessibility for the multifunctional management of protected areas in Central Italy

Multifunctional forest management should provide the opportunity to create, conserve, modify or eliminate forest roads. Within protected areas, it is difficult to make a single assessment of the degree of accessibility to different forest areas, having to mediate among productive forestry, protection needs and other benefits deriving from forest stands. A GIS-based methodology, with the support of a Forest Information System (FIS) and available Forest Plans for the study area, were applied to create an accessibility map (based on the forest roads network) for the Abruzzo, Lazio, and Molise National Park (PNALM). Results were related to several FIS metadata, highlighting that accessibility in the study area was sufficient, but not optimal, in the productive management units, being rather poor in those where soil protection and biodiversity conservation are the main functions (only 38.8% of them were accessible). Forest roads density (28.5 m ha−1) was not homogeneously distributed within the study area and the ratio between forest road length (199.4 km) and planned forest surface (13,355.3 ha) is only 14.9 m ha−1. In contrast to what is commonly found in forest accessibility works, the innovative element of this study was the involvement of PNALM’s technical office in evaluating the results and exploring the opportunity to adopt a different policy for forest roads network management.

From the Bank of Italy to the administrative unit

The construction of the Palace of the Bank of Italy, now Gregorčičev drevored 3 in Postojna commenced in the summer of 1924. It was implemented by the Trieste-based Doria & Oblach company in accordance with the preliminary project prepared by the technical office of the Bank of Italy’s central management and in congruence with the sketches provided by the local technical management. After interruptions in the winters of 1925 and 1926, the construction was completed in the summer of 1927. Trieste’s branch office of the Bank of Italy in Postojna opened its door to the public on the 15th of October in 1927. This article describes the construction process and procedures following the opening, related to the abandonment of the building’s original use and its passing through the hands of different institutions. The article is based on obtained archival sources as well as the author’s own observations made during the renovation works performed in 2020 and 2021, in which she took part as the responsible conservator.

Analysis of the Challenges of Motor Vehicle Tax Revenue at the Technical Service Unit Office Revenue

Tax is one of the main sources of revenue for a country that is paid by the public. Taxes are also collection fees that can be imposed by the government based on the provisions of tax laws and regulations. The research method is qualitative deductive. Data collection techniques are observation, interviews, and documentation. The analysis technique used is data collection, data reduction, data presentation, and concluding. The results of the study explain that several factors that cause the first less than optimal motor vehicle tax receipts are community compliance whereas in Maros district the level of community compliance with motor vehicle tax payments is still low, as evidenced by the number of vehicles that do not re-register. Furthermore, the performance of the officers who were assessed was still lacking in discipline and the last one was the target that was too high so that it was very difficult for the Maros Revenue Unit to realize it by the end of the year. The research can be used as a reference in analyzing the challenges of motor vehicle tax receipts because previous research focused on the motor vehicle tax revenue services system at the Technical Services Unit Office Revenue.

Analysis of Formwork System Selection Criteria for Building Construction Projects: A Comparative Study

The formwork system (FWS) in reinforced concrete (RC) construction is a critical component. The appropriate FWS is selected based on a number of conflicting and compromising criteria, and the selection of the FWS is carried out by construction professionals with different technical and/or administrative backgrounds. The perspectives and perceptions of construction professionals and companies involved in the FWS selection process may vary depending on their motives. In addition, some building structural parameters may have a significant impact on the FWS selection criteria. Most of the former studies investigated the FWS selection criteria from only the perspective of contractors and neglected the potential differences in the perspectives and perceptions of different construction professionals (i.e., owners (CO), project managers (PM), construction managers (CM), site engineers (SE), planning engineers (PL), procurement engineers (PR), technical office engineers (TO), and formwork design and/or formwork sales engineers (FD/FSL)) and companies specialized in different fields (i.e., project management service (PMS), engineering and design (ENG/DSG), formwork and scaffolding (FW/SCF), and general and/or sub-contractor (GC/SC)) regarding this issue. Moreover, the impact of building structural parameters on the FWS selection criteria has not been investigated. This study aims to fill this knowledge gap through analysing the FWS selection criteria for building construction projects while comparing the perspectives and perceptions of different groups of construction professionals and companies and investigating how FWS selection criteria are affected by the building structural parameters. Based on a comprehensive literature review, 35 FWS selection criteria were identified and a questionnaire was developed. The questionnaire data obtained from 222 Turkish construction professionals were statistically analysed using mean score analysis, the Kruskal–Wallis test, and the Mann–Whitney U test. According to the study’s findings, the FD/FSL group presented significant statistical differences regarding the FWS selection criteria as compared to the CO, PM/CM/SE, and PL/PR/TO groups. Moreover, the total area of building construction and total building height significantly affected the FWS selection criteria. This study serves to underscore the perspectives of various groups of construction professionals and the critical connection between the structural parameters and FWS selection criteria. The findings of this study may guide construction professionals to select the appropriate FWS for their building construction projects.

Digital simulation tools in aviation maintainability training

AbstractAviation maintenance needs to be continuously improved for many reasons: flight safety, the health of maintenance operators, and saving time and costs among other reasons. To preventively improve the working conditions, the Maintainability Department—the department designing the maintenance activity in the Technical Design Office—develops and uses simulation tools such as Virtual‐Reality (VR). To improve maintenance, maintainability stakeholders must perform Human Factors analysis through simulation tools. However, the use of VR requires specific knowledge and skills that should be learned by students in the university. The aim of this paper is to study the use of VR as a Teaching & Training tool as well as an Industrial tool in real on‐the‐job cases. Over 2 years (between 2018 and 2020), we have trained and observed 112 students. Two main surveys have been used, the first one at the beginning of the academic year (to better know students' previous experience in VR) and the second survey at the end of the year (to get students' feedback regarding their training year with VR). We have formulated and presented recommendations to apply better inductive‐deductive teaching approaches offering more cases studies and a better understanding of aviation maintenance by students. We have also made recommendations to improve the use of VR, for example, to reduce the discrepancies and inaccuracies between the virtual and real worlds.

The Relationship between the Brain Behavioral Inhibition and Activation Systems (BIS/BAS) with Chronic Fatigue Syndrome among Employees of Technical and Vocational Office of Ilam

Introduction:Fatigue is an unpleasant mental feeling that has also been shown to decrease physical and mental performance, The aim of this study was to examine the relationship between brain-behavioral systems and chronic fatigue syndrome employes Technical and Vocational Office of Ilam. Materials and methods: the aim of this study is based on the purpose of the applied research and based on the way data collection is descriptive research. the research community includes all the technical and professional employees of the city of ilam in 2019. from the above mentioned community, 120 people were selected from available sampling method . then the questionnaire was conducted with chronic fatigue questionnaire and behavioral mental systems questionnaire. to analyze the hypotheses, pearson correlation method and regression were used. Results: According to the research results, there is a positive and significant relationship between driving and chronic fatigue at the level (P = 0.000 r = 0.447). There is a significant negative relationship between entertainment search and chronic fatigue at the level (r = 0.321, p = -000). There was a positive and significant relationship between reward response and chronic fatigue at the level (P = 0.004, r= 0.264). There is a positive and significant relationship between behavioral inhibition and driver at the level (P = 0.004, r = 0.244). There is a positive and significant relationship between driver and response (P = 0.004, r = 0.354). Driver scales, entertainment search, reward response, and behavioral inhibition predict 13.5% of the variance of chronic fatigue. Conclusion: Therefore, it is concluded that there is a significant relationship between behavioral brain systems and chronic fatigue. Therefore, it is important to pay attention to the brain-behavioral systems as an effective factor in chronic fatigue

A Sustainability Index within Water and Wastewater Management in Sweden: An Evaluation of Eight Case Studies

A sustainability index (SI) is a benchmark for guiding the activities of municipal water and wastewater (W and WS) utilities toward sustainability. The SI has been used in Sweden since 2014 as an internal benchmark management tool facilitating the strategic work of organizations. This study assesses how the SI was applied in practice by eight utilities (Orgs 1–8) from 2015 to 2019. The study was performed using in-depth semi-structured interviews with managers of the utilities and analyzing 32 SI reports and other documents. The utilities generally perform better in all parameters compared with the national average. Three utilities had improved results during the study period, while the other five had unchanged development. Five utilities use the SI index to improve their performance, and three use the SI results to grade the organization. All utilities are concerned with sustainability and wish to improve their performance. The study found that the parameter “Status of W and WS fixed facilities” was the furthest from sustainability. The study also clarifies that the technical committee has the primary responsibility to ensure that the technical office meets the sustainability objectives.

Bodega en seco. El caso de las Bodegas Internacionales S. A. de Jerez

La comarca de Jerez ha sido un territorio de experimentación tanto en lo referente a los sistemas de producción de vino como en la investigación arquitectónica de los espacios que los cobijan: las bodegas. La continua evolución del sector vinícola ha llevado parejo una transformación, a lo largo de los últimos dos siglos, de los tipos bodegueros, en cuanto a sus sistemas constructivos y espacialidad. En este contexto, se construyen en 1974 las Bodegas Internacionales, diseñadas por la Oficina Técnica Arquinde, un edificio que supuso un desafío constructivo y estructural sin precedentes en el sector: la construcción con junta seca y en dos años de una bodega de 50 000 m2. El sistema constructivo de prefabricados de hormigón utilizado, la investigación espacial y estructural que propone, más cercano a estructuras contemporáneas extensivas que a la tradicional “bodega catedral” jerezana, hicieron de este desconocido edificio un ejemplo de innovación tecnológica de primer nivel.

An Augmented Reality inspection tool to support workers in Industry 4.0 environments

Among the key technologies of Industry 4.0, Augmented Reality (AR) is one of the most promising and enabling technologies for supporting factory workers and engineers at the workplace. To this end, the paper proposes a novel AR tool to assist operators during the inspection activities for the detection of production and assembly errors. In fact, thanks to the superimposition of the 3D models, as designed by the technical office, a worker can easily detect the presence of design discrepancies on the final physical assembled product and report them by adding 3D annotations directly on virtual models.This AR tool has been developed by using ARCore™ libraries to ensure, in the first place, its compatibility with commonly used devices for which workers are already trained and, secondly, to take advantage of the hybrid-tracking techniques that combine vision- and sensor-based methods to improve the reliability of the AR visualization. Nevertheless, the proposed AR tool adopts multiple markers to minimize tracking errors and therefore to provide greater freedom of movement to the user, who can use the tool also for the assessment of large-size products.Field experimentations have been carried out on a real case study with end-users in order to assess its usability and perceived mental workload through the SUS (System Usability Scale) and NASA-TLX (Task Load Index) standard questionnaires, respectively. The usability study was performed taking into account also objective metrics, i.e., by analysing user performance in target acquisition tasks while interacting with the AR tool. Statistical analysis proved that the adoption of this AR tool requires low mental demand, and its usability has reached a high level of satisfaction both by the factory workers and engineers involved in the user study.

Архитектор и инженер Николай Александрович Потураев. Заметки о творчестве

Currently, one of the most important tasks of research activity is the task of collecting information, identifying and publishing the names of architects, sculptors and artists who are still unknown, the circumstances of their life and work, which will allow more objective presenting of Russian art of the second half of the 19th – early 20th centuries. In particular, this concerns a study of the field of construction of industrial facilities, where the names of most project authors still remain unknown. This paper is to study the work of one of such architects and engineers — Nikolai Alexandrovich Poturaev. To this end the authors explore some of the construction activities of the Brothers A. and N. Poturaev Trading House in Moscow, as well as identify a number of addresses related to the placement of workshop, technical office and other services of this Trading House. Addressing to archival documents made it possible to establish that the Trading House of brothers A. and N. Poturaev actively collaborated with the M. S. Kuznetsov Partnership and carried out construction work at the Riga Porcelain-Faience Factory, Dulevsky Porcelain Factory, Tver Porcelain Factory in the village of Kuznetsovo. The factory buildings under construction included carefully elaborate heating system as well as the first ventilation and air humidification system installed. The most modern technical solutions and materials were used for construction. It should be noted that the merits of buildings of purely utilitarian purpose are due in no small part to elements of decor, generally characteristic of Russian industrial architecture of the late 19th – early 20th centuries. The authors analyze Poturaev's architectural projects, considering stylistic features of neoclassical buildings with the introduction of Art Nouveau elements, as well as other historical styles. Poturaev's architecture is distinguished by rationality, the desire to develop interesting layouts, convenient and practical. In the composition of the building, he always highlights its structural basis, as a rule, emphasized by decorative elements. The surviving buildings of N. A. Poturaev provide additional connotations to the characteristic of development of a domestic architecture of the late 19th – early 20th centuries.