bluuebunny/crossref_metadata_2025_split huggingface dataset:
Civilian armored vehicle operations in Brazil – challenges and production processes improvements: a qualitative survey
Authors: Candido Guido Muzio , Kaminski Paulo Carlos 
Published: April 2023

Abstract
Armoring civilian vehicles requires specialized knowledge and experience that many armoring companies lack as they are not direct or indirect suppliers of vehicle manufacturers. This limits their access to automotive quality and manufacturing certifications or detailed vehicle designs, which can result in loss or malfunctioning of automotive components during the armoring process. Therefore, this study aimed to investigate the challenges faced by Brazilian civilian armoring companies and identify opportunities for improvement in their production processes. Qualitative research was conducted using a questionnaire-based survey of eight specialized firms in Brazil, as well as literature related to DFMA, design for manufacturing and assembly, quality, automotive, and ballistic references. The study results include detailed armoring operation steps, qualitative survey reports, and helpful literature references for armoring practitioners to generate a standard armoring procedure for different vehicle models. Following best practices in automotive and armoring procedures collected in the survey responses can standardize and enhance ballistic protection operations while preserving the original vehicle systems' functionalities and warranties. This work provides valuable information for armoring companies to improve their operations and interfaces with automotive systems and follow automotive and ballistic references.
Indicator analysis of the technological position of a manufacturing company
Authors: Pacana Andrzej , Czerwińska Karolina 
Published: April 2023

Abstract
A turbulent manufacturing market, especially in the metal industry, determines the quality of products and the level of production efficiency, which contributes to a company's market position and competitiveness. The aim of the study was to develop a model to define a manufacturing company's current market position using KPIs in relation to a key product - gearbox casting. The company's position was defined in terms of the relationship occurring between technological capabilities and market position. An additional aim of the study was to identify critical determinants and, ultimately, to identify conditions for strengthening market position. As a test of the proposed model, the position of the analysed company (in terms of technological capabilities and market position) was defined as "Search for occasions" - box 9 within the 3×3 matrix. Technological determinants that weaken the company's position (low level of maintenance capacity and long production cycle time) and determinants with a strong negative impact on market position (low level of human resource development) were identified. An element of novelty is the use of KPIs as variables determining the position of the company within the 3×3 matrix, which is indicative of a specific technological position in the market. Further lines of research will concern the determination of appropriate KPIs in relation to the identified critical areas of the company. Subsequent steps will concern the implications of the model in relation to the company's other key aluminium alloy castings.
Use of the digital twin concept to optimize the production process of engine blocks manufacturing
Authors: Sujová Erika , Bambura Roman , Vysloužilová Daniela , Koleda Peter 
Published: April 2023

Abstract
The aim of the paper is to present the concept of a digital twin (DT) as part of the Industry 4.0 strategy. In the form of a case study, a digital twin of a production line for the processing of engine blocks is presented, which will serve as a starting point for further research in the field of digitization of production processes. The research part describes the simulation model of the production line with the representation of the material flow as a basis for the creation of a digital twin. The simulation model was used to optimize the production processes of the engine block and to verify the increase in its productivity. A case study implemented through a digital twin enables testing and analysis of changes before they are introduced into real production.
Application of Simulation Technique for Improving Plant Layout in Ceramic Factory
Authors: Kasemset Chompoonoot , Opassuwan Takron , Tangsittikhun Thanakit , Chaiyajina Nititada 
Published: April 2023

Abstract
This study aims to design and improve the plant layout of a ceramic factory by adopting Systematic Layout Planning (SLP) and the simulation technique. A ceramic company in northern Thailand is selected as a case study. Three ceramic products including roof tiles, wall tiles and dishware are studied due to their highest production volume. Through the SLP approach, information regarding the number of departments and machines, the area of the plant, the frequency of movement and the distance between each department is collected for the analysis of the relationship between departments. Two plant layout designs are then proposed; the first one is derived from the Computerized Relationship Layout Planning algorithm (CORELAP), and the second one is the process layout. For selecting the most appropriate layout design, five criteria are considered including total distance, the average total process time of each unit produced, ease of movement, material flow and safety. To determine the distance and the average total process time per unit, Distance-Based Scoring and simulation techniques are conducted while the ease of movement, material flow and safety are rated based on whether the company satisfies each criterion. Employing the weight scoring technique, the results report that the CORELAP layout is the most suitable for further implementation due to its highest weighted score equal to 2.536 while the process layout receives 2.386. Implementing the CORELAP layout can reduce the total distance by 16.76% while the average total process time per unit of the CORELAP layout is not significantly different at the significance level of 0.05 as compared to the existing layout.
Electrical properties for cold sprayed Nano copper oxide thin films
Authors: Muneer Roaa Mohammed , Idzikowski Adam , Al-Zubiedy Ali 
Published: April 2023

Abstract
This work is a Copper oxide (CuO) thin films were effectively produced using cold spray technique. The process take place in an inert gas (helium) without using catalyst. Nano CuO was deposited on a glass slide, using helium as carrier gas heated to 100, 200, 300, and 400 °C, respectively on heated glass substrates at 300°C. The effect of structural and electrical properties was examined at each temperature for each film. AFM images show that the CuO thin film have different diameters ranging from 80 to 600 nm, and low surface roughness about 20.9 nm. The measured value of copper oxide resistivity was found to be decrease very much with the increasing temperature. All the result showed that copper oxide is suitable material for photovoltaic applications. This research is part of a larger work for the solar cells industry. Therefore, the aim of this research is to study the electrical properties of solar cells in the primary stages of manufacturing from available materials at low costs.
Experimental Investigation of the Electro Co-deposition of (Zinc-Nickel) Alloy
Authors: Salman Ekhlas Abdulrahman 
Published: April 2023

An experimental investigation has been carried out for zinc-nickel (Zn-Ni) electro-deposition using the constant applied current technique. Weight difference approach method was used to determine the cathode current efficiency and deposit thickness. Also, the influence effect of current density on the deposition process, solderability, and porosity of the plating layer in microelectronic applications were examined. The bath temperature effect on nickel composition and the form of the contract was studied using Scanning Electron Microscope (SEM). Moreover, elemental nature of the deposition was analyzed by Energy Dispersive X-Ray (EDX).
It has been found that the best bath temperature was 40˚C, specifically at a concentration of 73 g/L of NiCl2.6H2O, has a milestone influence on the nickel composition and structure of the deposits. The potential is a major factor influencing the deposition coating alloy which is adjusted by the operations of the cathodic polarization; rather than the standard potential of the two metals as determined by the e.m.f. series. The anomalous deposition was obtained at a current density lower than 0.8 A/dm2, while normal deposition occurred at current densities less than 1.2 A/dm2.
Corrosion behavior was exhibited by the bath and for performance was carried out, and it shows that the best corrosion performance was for nickel composition of 10-12.6 wt%.
The effect of Acculturation on the Plans of Iraqi Origin Elites during the Late Ottoman Rule (1830-1917)
Authors: Al-Sadkhan Areej Kareem M. , Fehmi Parizat Qassim Hussein 
Published: April 2023

Generally, different propositions show that culture changes because of many factors, and acculturation has emerged out of important operations which lead to cultural change as a result of contact between different societies or cultures. Since the cultural environment with its varying effects plays a major role in the formulation of architectural products, the research defined its research problem as follows: There is need for knowledge to specify the results of acculturation at the level of plans of house architecture belong to Iraqi elites in Baghdad city during the late Ottoman rule in Iraq(1830-1917). The research depends on the comparative procedure to define the acculturation results, so the plans character of the house of Iraqi origin will compare with the plans character for Iraq’s houses before the Ottoman rule in Iraq, and with the plans character of Turkish houses in Anodal during the Ottoman rule. The final conclusion shows that the result of acculturation between the two cultures during the late Ottoman rule at the level of the plans of the Iraqi elite houses represented by the energetic maintenance of the characteristics of the local plan. However, this maintenance began to decline (the start of medium-sized maintenance) beginning at the end of the period studied.
Tüketim Kültürü ve Yaşam Biçimleri Çerçevesinde Cemiyet Dergilerinin Eleştirel Ekonomi Politik Çözümlemesi
Authors: PINAR Lütfü , DAĞTAŞ Erdal 
Published: April 2023

Bu çalışmada, Türkiye’nin ekonomi politik ve kültürel yapısında yaşanan dönüşümlerin izdüşümleri çerçevesinde tüketim kültürü ve yaşam biçimlerinde meydana gelen değişimler cemiyet dergileri (Alem ve Şamdan Plus) özelinde eleştirel ekonomi politik bir yaklaşımla incelenmiştir. Cemiyet basını ve haberciliğinin özgün bir tanımını da içeren bu çalışmada, neo-liberal politikaların belirleniminde şekillenen Türkiye medyasının ekonomi politik yapısı cemiyet dergileri üzerinden sorgulanmıştır.
Nitel çözümleme yönteminin benimsendiği çalışmada, konuyla ilgili verilerin toplanması aşamasında yarı yapılandırılmış derinlemesine görüşme ve metin çözümlemesi tekniklerinden yararlanılmıştır. Çözümleme nesnesi olarak belirlenmiş her bir dergiden üç kişiyle derinlemesine görüşme yapılmıştır. Görüşmecilere, cemiyet dergilerinin üretim dinamiklerine ve içeriklerine ilişkin sorular yöneltilmiştir. Ayrıca, çözümleme nesnesi olarak seçilmiş dergilerin 2018 yılı içerisinde yayımlanmış sayıları arasından amaçlı örnekleme tekniğinden yararlanılarak belirlenen toplam 32 sayısının (Alem’in 16 ve Şamdan Plus’ın 16 sayısı) metin çözümlemesi gerçekleştirilmiştir.
Çalışmada, Türkiye’deki tüketim kültürü ve yaşam biçimlerinin şekillenmesinde ve yaygınlaştırılmasında cemiyet dergilerinin önemli bir rol üstlendiği sonucuna ulaşılmıştır. Özellikle, üst sınıf üyelerinin, lüks ve gösterişçi yaşam biçimlerini cemiyet dergileri üzerinden sergileyerek toplumsal sınıflarının görece ayrıcalıklı konumlarını ve prestijini pekiştirme amacında oldukları saptanmıştır.
SEARCH OF ANSWERS, WHY REGIONAL PLANNING IS BASIS OF TOWN-PLANNING ACTIVITY IN CONSTRUCTION OF STRATEGY OF DEVELOPMENT OF UKRAINE
Authors: Diomin Mykola , Yatsenko Viktor , Korotkova Tatyana 
Published: April 2023

The article briefly examines the results of the development of regional planning in Ukraine and its formation as a separate independent school. The main basic researches of Ukrainian scientists are considered, which make it possible to affirm the independence of the school, the sufficiency of scientific and project developments, forms of complex solutions to issues related to the settlement-territorial community-district-region-country system, and most importantly, the super-powerful human professional potential of specialists in various industries that have always been interested in the problems of urban development. An attempt was made to prove that Regional Planning is one of the tools for building the country's development strategy at all levels.
In the district triad - planning-town planning-architecture, the central city is occupied by town planning. In the work, the triad is considered from the position of a single continuous process for solving specific objects, where urban planning is only an intermediary between district planning and architectural design, ensuring a gradual process of transition of solving problems from the regional level to a specific object.
The work considered and proposed to consider the periodization of regional planning from the perspective of a paradigm or prediction of a set of problems that are most relevant in one or another period of the country's development, which makes it possible to more reliably solve the tasks of the urban planning sphere thanks to the scientific concentration of research at all levels at the same time.
In addition, regional planning is considered from the position of a powerful tool for finding solutions for organizing the country's settlement system at all levels.
STAGES OF STYLISH DEVELOPMENT OF THE ARCHITECTURE OF ELIZABETHGRAD AT THE SECOND HALF OF THE 19TH – BEGINNING OF THE 20TH CENTURY
Authors: Penyaz Tatyana 
Published: April 2023

The article is devoted to the architecture of Yelysavetgrad at the second half of the 19th century and the beginning of the 20th century, that forms a large part of the historical center of the city and contains information about the development of medium-sized cities in southern Ukraine. The article presentes a classification of stylistic features and stages of the development of the Yelisavetgrad architecture of the period under study. On the basis of field surveys, studses of literary and archival sources, patterns of stylistic development, depending on the preferences of the time and the functional purpose of the buildings were revealed.
In the development of Yelisavetgrad architecture of the studied period, four stages are distinguished: two stages of the development of eclecticism and two stages of the development of modernism. The first stage is characterized by a close connection with the classical heritage of the previous period and the influence of romanticism. It was called retrospective, because historical prototypes were used in the creative search for new forms. At the second stage, eclectic combinations of forms and decor were developing.
The third stage is the most innovative. It is characterized by the development of international trends of modernism (decorative and rational) in combination with forms and directions of eclecticism. A combination of modern and ancient is observed in modern architecture. At the final stage, neoclassicism is more pronounced and complete than in previous periods. The article analyzes the connections between stylistic directions at each stage and their genesis during the studied period.
Stages in the architecture of the studied period differ in the quality of changes in the stylistic development of the research objects. The results of the study represent the classification of objects according to the period of construction, of the stylistic direction and typology. This work can be used in further studies of the features of the architectural and planning development of Yelisavetgrad architecture in the second half of the 19th and the beginning of 20th centuries.
RESEARCHES OF CHANGES OF THE COEFFICIENT OF A FILTRATION OF THE POROUS MEDIA AT THE DIFFERENT TYPES OF FORMATION OF A DEPOSIT. THE THEORETICAL ANALISIS AND PRACTICAL RECOMMENDATIONS FOR CALCULATIONS OF CLEARING FILTERS
Authors: Obertas Irina 
Published: April 2023

On the basis of analogy betweem the laminar flow of a viscous liquid in a tube and a filtration in the porous media which submits to the linear law of resistance Dar-cy the formula for calculation of coefficient of a filtration at the combined form of adjournment of a deposit is obtained. Practical recommendations for a choiсе of theoretical and approximating experimental dependences for different types of formation of a deposit are given.
Theoretical and applied studies of filtration of heterogeneous ridins in porous mediums with changing powers took away significant development in connection with solutions to the problems of water purification in the form of finely dispersed mineral and columnar particles and speeches. Changes in the power of porous media are observed in the history of various mechanical, physical-chemical and biological processes of mass transfer which are visible on the surface of the particles of the middle (surfase – the slurry type of the settlements of the siege after adsorption), or without the middle in the port channels (volume – the dispersed type of the settlement of the siege).
With accumulated siege (the process of colmatation), a change in porosity and filtration coefficient is observed, and with inflows (the process of suffocation) – an increase in these important parameters of the porous medium.
When filtering rich-phase and rich components sieges, it can be settled in a mixed (complex) form, like in plivkovy so in general. In case of filfiltration of rich-phase and rich-component native sediments, it can be settled in mixed (complex) forms – like in smelt, and in general forms. The type of the process of the siege of creation and indicated on the basis of laboratory data. To lie in the nursery area on the surface of the particles of interest, adhesive and sorption power of the particles of the medium, according to the type of encroachment, district, temperature and other char-acteristics of the porous medium and pore waters.
The negativity of a polynomial of degree forty-three
Authors: Niu Da-Wei , Lim Dongkyu , Qi Feng 
Published: April 2023

By virtue of two approaches, the authors prove that the function \(G(t)=5 t^{43}-218 t^{30}+720 t^{17}-455 t^{13}-52\) is negative on \([0,1)\) and \(G(1)=0\).
Riemann Hypothesis on Grönwall's Function
Authors: Vega Frank 
Published: April 2023

Grönwall's function \(G\) is defined for all natural numbers \(n > 1\) by \(G(n)=\frac{\sigma(n)}{n \cdot \log \log n}\) where \(\sigma(n)\) is the sum of the divisors of \(n\) and \(\log\) is the natural logarithm. We require the properties of extremely abundant numbers, that is to say left to right maxima of \(n \mapsto G(n)\). We also use the colossally abundant and hyper abundant numbers. A number \(n\) is said to be colossally abundant if, for some \(\epsilon > 0\), \(\frac{\sigma(n)}{n^{1 + \epsilon}} \geq \frac{\sigma(m)}{m^{1 + \epsilon}}\) for all \(m > 1\). Let us call hyper abundant an integer \(n\) for which there exists \(u > 0\) such that \(\frac{\sigma(n)}{n \cdot (\log n)^{u}} \geq \frac{\sigma(m)}{m \cdot (\log m)^{u}}\) for all \(m > 1\). The Riemann hypothesis is a conjecture that the Riemann zeta function has its zeros only at the negative even integers and complex numbers with real part \(\frac{1}{2}\). It is considered by many to be the most important unsolved problem in pure mathematics. There are several statements equivalent to the famous Riemann hypothesis. We state that the Riemann hypothesis is true if and only if there exist infinitely many consecutive colossally abundant numbers \(3 \leq N < N'\) such that \(G(N) \leq G(N')\). In addition, we prove that the Riemann hypothesis is true when there exist infinitely many hyper abundant numbers \(n\) with any parameter \(u \gtrapprox 1\). We claim that there could be infinitely many hyper abundant numbers with any parameter \(u \gtrapprox 1\) and thus, the Riemann hypothesis would be true.
PENGARUH MODEL PEMBELAJARAN PROJEK BASED LEARNING TERHADAP KEMAMPUAN DAN MINAT MENULIS BAHASA INDONESIA KELAS IV
Authors: Mukhsinah Mukhsinah , Akib Erwin , Akhir Muhammad 
Published: April 2023

Tujuan penelitian adalah untuk mengetahui kemampuan dan minat menulis bahasa Indonesia siswa kelas IV SD dengan model pembelajaran PBL. Jenis penelitian ini adalah kuantitatif, deskriptif inferensial dalam penelitian ini diberikan perlakuan tertentu (treatment), yaitu kelas kontrol dan kelas eksperimen. Sampel dalam penelitian ini adalah sebagian dari populasi dengan Teknik pengambilan sampel adalah total sampling. Metode pengumpulan data yang digunakan yaitu kuesioner kemampuan menulis dan minat menulis serta proyek membuat puisi serta dokumentasi. Tehnik analisis data yang digunakan yaitu pertama dengan menggunakan pendekatan statistik deskriptif, uji prasyarat, dan uji hipotesis Manova. Hasil penelitian, uji hipotesis manova ditemukan nilai signifikansi media pembelaajran berbasis proyek terhadap keterampilan menulis Bahasa Indonesia pada siswa kelas IV adalah 0.000 < 0.05 yang berarti bahwa Ho di tolak dan H1 diterima, dengan pengambilan keputusan bahwa terdapat pengaruh yang signifikan penerapan model pembelajaran berbasis proyek (PBP) terhadap kemampuan menulis Bahasa Indonesia siswa kelas IV; 3) berdasarkan uji multivariate di atas ditemukan nilai sig 0.000 < 0.05 yang berarti bahwa Ho di tolak dan H1 diterima, dengan pengambilan keputusan bahwa terdapat pengaruh yang signifikan penerapan model pembelajaran berbasis proyek (PBP) terhadap minat menulis Bahasa Indonesia siswa kelas IV SD
Akuammiline alkaloid derivatives: divergent synthesis and effect on the proliferation of rheumatoid arthritis fibroblast-like synoviocytes
Authors: Bao Xinye , Wei Jian , Tao Cheng , Bashir Muhammad Adnan , Zhang Hai-Jun , Bao Bian , Chen Jian , Zhai Hongbin 
Published: April 2023

During the past decades, rheumatoid arthritis had become a serious problem, torturing millions of patients because of unclear pathogenesis and no ideal therapies. Natural products remain an important source of medicines to treat various major diseases such as rheumatoid arthritis (RA) given their excellent biocompatibility and structural diversity. Herein, we have developed a versatile synthetic method for constructing various skeletons of akuammiline alkaloid analogs based on our previous research on the total synthesis of the related indole alkaloids. We have also evaluated the effect of these analogs on the proliferation of RA fibroblast-like synoviocytes (FLSs) in vitro and analyzed the corresponding structure-activity relationship (SAR). Among these analogs, compounds 9 and 17c have demonstrated a promising inhibitory effect on the proliferation of RA-FLSs, with IC50 values of 3.22 ± 0.29 μM and 3.21 ± 0.31 μM, respectively. Our findings provide a solid foundation for future pharmacological studies on akuammiline alkaloid derivatives and inspiration for the development of anti-RA small molecule drugs derived from natural products.