Valuable Parts Research Articles

An Economic Evaluation of the use of Wind Farms in Iran, Taking into Account the Effect of Energy Price Liberalization Policy

In this study, the effect of energy cost liberalization policies on the cost-effectiveness of wind farms compared to gas power plants has been investigated. To calculate the cost of electricity generation from various sources, including wind energy and fossil fuels, the “levelized cost” method has been used as the most acceptable economic method to compare different types of electricity generation technologies. In addition, calculations related to the cost of electricity, different fuel prices, differ-ent technologies of wind farms, and different prices of different types of fuel are considered. Based on the results of this research, it was found that by targeting fuel prices in the country, wind farms are quite cost-effective, and considering the cost of the opportunity to use diesel in the country, the construction of these power plants can provide the possibility of exporting this fuel. This cost also increases with the production of valuable equipment in the country. The important point is that the macro policy should localize the wind turbine industry with priority to its valua-ble parts and components due to fuel price changes. This policy will continue to make this type of power plant cost-effective in the country and the employment of specialists in the country.

“Can you take a wild guess?” Using images and expanding knowledge through interaction in the teaching and learning of history

This article contributes knowledge about disciplinary literacy practices in school history, with a particular focus on how key subject-related concepts are visually and orally represented and negotiated in teacher-student interaction. Based on a classroom study of history teaching in a linguistically diverse classroom in Grade 6, we use social-semiotic theories to analyze properties of the images themselves and how they are employed as resources in oral interaction, with particular focus on students’ potential involvement in discursive shifts between everyday and disciplinary wordings. The results show that decontextualized, generic images, particularly those of abstract concepts, can obstruct students’ participation in subject-related discourse. Students’ discursive mobility can also be limited by interaction-driven guessing games about key subject-related concepts and misleading use of everyday language. The results also show how L2 students’ creative use of linguistic resources, connections to learners’ prior knowledge, and reiteration of subject-related concepts can constitute valuable parts of discursive shifts. Implications for using images and oral interaction in ways that support disciplinary learning in history are discussed.

Biodiversity of Russian Local Sheep Breeds Based on Pattern of Runs of Homozygosity

Russian sheep breeds traditionally raised in specific environments are valuable parts of sociocultural heritage and economic component of the regions. However, the import of commercial breeds negatively influences the population sizes of local sheep populations and might lead to biodiversity loss. Estimation of the runs of homozygosity (ROH) in local sheep genomes is an informative tool to address their current genetic state. In this work, we aimed to address the ROH distribution and to estimate genome inbreeding based on SNP data to evaluate genetic diversity in Russian local sheep breeds. Materials for this study included SNP-genotypes from twenty-seven Russian local sheep breeds which were generated using the Illumina OvineSNP50 BeadChip (n = 391) or the Illumina Ovine Infinium HD BeadChip (n = 315). A consecutive runs method was used to calculate ROH which were estimated for each animal and then categorized in the ROH length classes. The ROH were found in all breeds. The mean ROH length varied from 86 to 280 Mb, while the ROH number ranged from 37 to 123. The genomic inbreeding coefficient varied from 0.033 to 0.106. Our findings provide evidence of low to moderate genomic inbreeding in major local sheep populations.

EFFECT OF 5 WT.% WPCB POWDER AS REDUCTANT ON INDONESIAN NICKELIFEROUS ORE PROCESSING

EFFECT OF 5 WT.% WPCB POWDER AS REDUCTANT ON INDONESIAN LIMONITICNICKEL ORE PROCESSING. Waste printed circuit boards (WPCB) are among the most valuable parts of electronic waste with one of the fastest-growing waste streams in the world. The purpose of this study is to investigate the possibility of WPCB powder as an alternative reducing agent for the carbothermic process in nickel lateritic ore processing. WPCB waste was mixed with nickel ore at 1100ÚC in inert atmosphere. In addition, a conventional reductant of coal is also utilized for comparison. Both reductant are varied in concentration of 5 wt% and 15 wt%. Based on thermogravimetric analysis (TGA) and differential thermogravimetric analysis (DTA) investigation, it is observed that there exists a difference between WPCB powder, nickeliferous ore powder, and the mixture in their decomposed levels. The decomposed gasses of WPCB produced by thermal degradation in the TGA instrument are mainly composed of reduction gas, which plays a critical role in reducing the nickeliferous ore. This study shows that WPCB powder performs comparably to sub-bituminous coal in the pyrometallurgical processing of nickel ore, which is proved by X-Ray Diffraction (XRD) test results that the carbothermic products consists of FeNi, magnetite, wustite and fayalite. It can be concluded than WPCB powder has potential to be utilize as an alternative reductant.

The Early Modern Silesian Gallows (15th–19th Century) as an Example of Stray Animals Utilization before the Rise of Institutional Veterinary Care

Simple SummaryThe history of veterinary medicine starts from ancient times. The lack of professional veterinarian education and institutional veterinary services from the Middle Ages to modernity resulted in, partially, a basic realization of these duties by blacksmiths, herders, butcher guilds, municipal doctors, and executioners. Therefore, the archaeological excavations carried out at gallows in three towns of Lower Silesia, together with the archaeozoological analysis of unearthed animal skeletal remains, brought valuable information on human–animal–environment relationships in the past. This includes the role of an executioner or a knacker (in animal population control), the utilization of stray animals, and the use of animal products accessible in a knacker’s yard. This work highlights the history of early modern towns that attempted to solve the problems surrounding the lack of veterinary care, before the rise of modern professional veterinary education, and the introduction of the veterinarian profession in modern human society. The results show that the majority of investigated animal skeletal remains came from adult and healthy animals, and after animal death, some parts of animal bodies were used (e.g., leather, fat, bones) by knackers as sources of additional profits, but the main sanitary problems could not be permanently eliminated.In the past, executioners played an important role in the legal system. Besides sentence executions, they also worked as dogcatchers (i.e., eliminating stray animals or cadavers of dead animals from towns), and were responsible for sanitary conditions within their towns and closest neighborhoods. Archaeological explorations of gallows in the towns of Lower Silesia (Poland) provide evidence of such activities, including animal skeletal remains. Archaeozoological analysis of these materials from the towns Kamienna Góra (Landeshut), Złotoryja (Goldberg), and Jelenia Góra (Hirschberg) are the subjects of this study. Our work also stresses the nature of the executioner’s profession in animal health control and town hygiene maintenance before the development of modern veterinary services. The results show significant differences in the frequency of species and distribution of anatomical elements in accessible assemblages compared with animal skeletal remains unearthed in typical waste pits or classical inhumation, allowing the assumption that the animals were anatomically adults, and their health statuses were generally good. The dominant species, equids and dogs, were represented by skeletal remains, with the predominance of less valuable body parts (distal parts of appendices, caudal parts of the vertebral column). The fragmentation of accessible bone assemblages narrows the ability of larger conclusions (i.e., minimum number of individual estimations). The work enlightens the complex role of executioners pertaining to the hygiene of early modern town communities, a role later replaced by professional veterinarians with all of the consequences of the transition process.

The amino and fatty acid profile of Japanese quail meat after dietary administration of bee bread

The aim of this study was to determine the effects of bee bread powder addition into Japanese quails’ diet on the amino (AA) and fatty acids (FA) composition of their breast and thigh meat. A total of 80 one-day-old quails were assigned to four groups: control group without any supplementation, 1. experimental group fed with bee bread supplementation in amount 0.2% of feed mixture (FM), 2. experimental group fed with bee bread supplementation in amount 0.4% of FM, and 3. experimental group fed with bee bread supplementation in amount 0.6% of FM. The feeding period lasted 56 days. Based on our results we can state that the bee bread powder supplementation did not influence the AA and FA composition of the valuable meat parts of Japanese quail. However, thanks to the favourable AA and FA content and undemanding breeding of Japanese quails, we highly recommend using this type of meat in the human nutrition.

Regional professionals, American activists, and the Iron Curtain: transnational memory work during the Cold War in the Jewish neighbourhood of Kraków

ABSTRACT In the search for the roots of the cosmopolitanization of Polish memory in the first decade of the twenty-first century, this article looks past the chronological boundaries of post-socialist Poland. It identifies regional memory professionals as the key “scale” in transnational memory work. It demonstrates that the present state of Jewish sites of Kraków is the outcome of transnational work conducted from as early as the 1970s, and it is the effect of competition and collaboration among Jews from the American diaspora, Polish Jews, and Polish regional memory professionals. In a field regulated by the Polish socialist state, diaspora Jews tried to impose on their Polish collaborators their vision of Jewish sites. Polish Jews fought to protect those same sites as a key component of their identity work. Prompted by local and transnational Jewish pressure, ethnically Polish professionals discovered the Jewish past for themselves. They began by protecting Jewish sites, later turning them into valuable parts of the heritage of Poland and, eventually, into a constitutive element of Polish heritage. This article claims that it is precisely regional memory professionals who are the key to transnational memory work.

University Ideological and Political Education Management Based on K-means Mean Value Algorithm

With the continuous advancement of my country’s informatization construction process, many universities have established various business-based databases for daily management. As a widely used emerging discipline, the application prospects of analyze and extract data technology in university education informatization Well, it provides a brand-new and scientific analysis method for the absurdity of the management, construction, and service process of universities. Based on this, this article mainly studies the application of clustering technology in analyze and extract data in the management of ideological and political education (PE) in universities. This paper uses analyze and extract data technology to try and propose a university ideological PE management research based on the k-means cluster analysis method, using analyze and extract data on the basic functions of the traditional system to make secondary use of ideological and PE data. Optimize the iterative process of the algorithm of k-means, preprocess various data, use the algorithm of k-means in the division method, realize the cluster analysis of the data, and extract the valuable parts of the large amount of precipitated ideological and PE data. Establishing a data model and providing decision-making guidance to managers, scientifically managing the process of ideological and PE, can effectively improve the overall efficiency of ideological and PE.

Energy-Efficient Robotic Parallel Disassembly Sequence Planning for End-of-Life Products

End-of-life (EOL) products contain many valuable parts and materials. The timely disassembly and recycling of EOL products can bring considerable economic benefits and reduce environmental pollution. To reduce the cost of manual disassembly, robotic disassembly has become one of the main methods used to dismantle EOL products. In addition, parallel disassembly can shorten the makespan of EOL products. Therefore, this article focuses on a new problem involving robotic parallel disassembly sequence planning for EOL products and establishes a corresponding multiobjective model to minimize the makespan and energy consumption. To obtain high-quality disassembly schemes, a discrete artificial bee colony algorithm based on problem characteristics is proposed. The performance of the proposed algorithm is verified by solving 32 benchmark problems and a comparison with three well-known multiobjective algorithms. The proposed model and method are applied to a real-world LCD TV disassembly case, and multiple preferred disassembly schemes are obtained. The results show that the proposed model and method can effectively shorten the makespan and reduce energy consumption. <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Note to Practitioners</i> —Parallel disassembly is one of the most efficient disassembly methods, and robotic disassembly will be one of the main disassembly methods in the future. Therefore, this article focuses on the robotic parallel disassembly planning to achieve an efficient and environmentally friendly treatment of end-of-life products. With the importance of production efficiency and energy saving, it is essential to simultaneously assess the makespan and energy consumption. The results demonstrate that the proposed artificial bee colony algorithm can provide multiple disassembly schemes that balance the makespan and energy consumption. The obtained disassembly schemes can provide references for the disassembly planning of the disassembly enterprise and expand the decision-making space for decision-makers.

DETERMINING THE SOIL QUALITY INDEX IN THE BATUMI DELTA, GEORGIA

The soil quality index is a quantitative assessment concept and it is used in the evaluation of ecosystem components. Because of the high potential for agriculture and biodiversity, deltas are the most valuable parts of the ecosystem. This study aimed to determine the soil quality index (SQI) in the Batumi Delta, Georgia. For this purpose, the study area was divided into five plots due to their morphological positions (L1, L2, L3, L4, and L5). A total of 125 soil samples were taken for analysis including clay content (CC), silt content (SC), sand content (SaC), mean weight diameter (MWD), aggregate stability (AS), amount of water retained under -33 kPa (FC) and -1500 kPa (WP) pressures and organic matter content (OM). These properties were used as the main criteria, and the Analytic Hierarchy Process (AHP) and Factor Analysis were used for weighting them. Sub-criteria were scored using expert opinion and the linear score functions, such as “more is better” and “optimum value”. For determining SQI, the additive method (SQIA), the weighted method with AHP (SQIAHP), and the weighted method with factor analysis (SQIFA) were used. The resulting SQI scores of the three methods were ordered as SQIAHP&gt;SQIA&gt;SQIFA, but these differences were not significant. However, the SQI scores of the plots (p≤0.01) showed statistically significant differences and were ordered as L5&gt;L4&gt;L3&gt;L2&gt;L1.

The effect of xanthohumol on carcass and oxidation parameters in the meat of Japanese quail

Article Details: Received: 2020-10-14 | Accepted: 2020-11-27 | Available online: 2021-01-31 https://doi.org/10.15414/afz.2021.24.mi-prap.67-70 In recent years, the addition of different plant extracts has become an inherent practice in poultry production. Not only as they represent a source of energy but also the beneficial content of improving the growth and quality of meat. The aim of our study was determined the effect of xanthohumol on body weight, percentage of valuable parts of muscle, content of meat of Japanese quail ( Coturnix japonica ), and oxidation processes in meat during cold storage for 7 days at 4 °C. In the comparison of groups of quails with supplementation of xanthohumol in water and in feed, the higher protein content in meat we detected in group with feed supplementation (P &lt; 0.05). Xanthohumol, administered in feed and water, did not affect the weight, percentage of valuable parts of muscle, pH of meat, water content, fat and ash in meat. The fat oxidation, and value of TBARS were lower in quails with feed supplementation in compare to control group (P &lt; 0.05). Keywords: prenylflavonoids, xanthohumol, hops, Japanese quails, carcass value References Ayabe, S., Uchiama, H., Aoki, T., Akashi, T. (2010). Plant Phenolilics: Phenylpropanoides. 1, 929–976. Chemistry, Molecular Sciences and Chemical Engineering. Elsevier. Babangida, S., Ubosi, C. O. (2005). Effects of varying dietary protein levels in the performance of laying Japanese quail ( Coturnix coturnix japonica ) in a semi-arid environment. Nigerian Journal of Animal Production . 33(1/2), 45–52. Barriuso, B., Astiasarán, I., Ansorena, D. (2013). A review of analytical methods measuring lipid oxidation status in foods: A challenging task. European Food Research and Technology . 236, 1–15. doi: 10.1007/s00217-012-1866-9. Choudhary, M., Mahadevan, T. (1986). Influence of age, storage and type of cuts on the composition of quail meat. Indian Poultry Science , 21(3), 252–254. GraphPad Prism version 4.00, GraphPad Software Inc. San Diego CA, 2003. Jiang, C. H., Xiang D. X., Wei, S. S., Li, W. Q. (2018). Anticancer activity and mechanism of xanthohumol: a prenylated flavonoid from hops ( Humulus lupulus L.). Frontiers in Pharmacology , 22 ( 9), 530. 10.3389/fphar.2018.00530 Liu, M., Hansen, P. E., Wang, G., Qiu, L., Dong, J., Yin, H., et al. (2015). Pharmacological profile of xanthohumol, a prenylated flavonoid from hops ( Humulus lupulus ). Molecules , 20(1), 754–779. 10.3390/molecules20010754 Marcinčák, S., Sokol, J., Turek, P., Popelka, P., Nagy, J. (2006). Stanovenie malóndialdehydu v bravčovom mase s použitím extrakcie tuhej fáze a HPLC. Chemické Listy ,100, 528–532. Nikolic, D., van Breemen, R. B. (2013). Analytical methods for quantitation of prenylated flavonoids from hops. Current Analytical Chemistry , 9(1), 71–85. 10.2174/157341113804486554 Panda, B., Singh, R. P. (1990). Developments in processing quail meat and eggs. World´s Poulry Science Journal, 46(3), 219–234. Ruban, S. W. (2009). Lipid peroxidation in muscle foods-An Overview. Global Veterinaria . 3, 509–513. Simpson, B. K. (2012). Food Biochemistry and Food processing . 2 th ed. Iowa: BlackwellPublishing. Tkáčová, J., Angelovičová, M. (2013). Aetherolum and fatoxidation of chicken meat. Potravinárstvo , 7(1), 76–79. Vaclovský, A., Vejcik, S. (1999). Analýza produkčních znaků japonských křepelek plemene Faraon. Collection of Scientific Papers, Faculty of Agriculture in České Budejovice, Series of Animal Sciences , 16(2), 201–208. Veterinary Laboratory Methodology, VI. Hygiena potravín. Kolektív autorov. SVS ČR, ŠVS SR, Bratislava, 1990, 130s. Zanoli, P., Zavatti, M. (2008). Pharmacognostic and pharmacological profile of Humulus lupulus L . Journal of Etnopharmacology , 116(3), 383–396. 10.1016/j.jep.2008.01.011

Multiverse Optimization Algorithm for Stochastic Biobjective Disassembly Sequence Planning Subject to Operation Failures

Disassembly is an essential step in a remanufacturing process via which valuable parts and material of end-of-life (EOL) products can be well reused and resource waste is reduced. Disassembly sequence planning focuses on finding the best disassembly sequence for a given EOL product by considering economic and environmental performance. In a practical disassembly process, one may face a disassembly operation failure risk due to the difficulty of knowing EOL products’ exact information in advance. Despite its importance in impacting disassembly outcomes, the existing work fails to consider it comprehensively. This work proposes a stochastic biobjective DSP problem with the objectives of maximizing disassembly profit and minimizing energy consumption by doing so. A chance-constrained programming model is established, where a chance constraint ensures a fixed confidence level of disassembly failure. To solve it efficiently, a multiobjective multiverse optimization algorithm with stochastic simulation is proposed. Experiments are carried out on four products. Results demonstrate that it outperforms some state-of-the-art algorithms in terms of solution performance.

Suitability of Slower Growing Commercial Turkey Strains for Organic Husbandry in Terms of Animal Welfare and Performance.

Intensive turkey production with fast growing strains is often critically discussed regarding animal welfare problems. Studies evaluating the welfare status of both organic and less intensive selected turkey strains are limited, except in the slightly slower growing Kelly Broad Breast Bronze (Kelly). The aim of this study was to assess the welfare of turkeys from two strains with further decreased growth rate, Hockenhull Large Bronze (HoBr) and Hockenhull Black (HoBl), in comparison to Kelly under commercial organic conditions with 100% organic feed. Altogether 844 non-beak-trimmed male turkeys (274–288 per line) were reared and fattened in three replications with each six groups. On group level, use of resources in the 7, 16, and 25th week of life, mortality and feed conversion were recorded. Each bird was assessed with regard to plumage and skin condition as indicators of agonistic interactions, cannibalism and feather pecking, with regard to leg health, footpad, breast skin condition and, as performance indicators, live and carcass weight, utilization, daily weight gain and weights of valuable meat parts. The significantly slower growing HoBl showed slightly fewer malposition of the legs, reduced injury rates and less breast buttons, but a higher susceptibility to footpad dermatitis than Kelly turkeys. HoBr with a similar growth rate compared to Kelly had slightly more problems concerning walking ability and plumage damage, but also less breast buttons than Kelly turkeys. However, effect sizes were negligible (Φ < 0.10), except for the higher occurrence of footpad dermatitis and the reduced number of breast buttons in HoBl with small effect sizes (Φ = 0.20–0.24). Use of resources, prevalence of breast blisters and mortality, were not statistically different, although mortality rate was numerically lower in HoBl. Thus, for none of the studied strains clear benefits or disadvantages in terms of the birds' predisposition for welfare problems could be identified. Overall, prevalences of animal welfare problems were mostly lower than in comparable studies while performances were comparatively high. Therefore, turkeys from the studied strains appear to be suitable for organic rearing and fattening with 100% organic feed, given a good management.

Rationale for the thickness of the rubber lining of belt conveyor drums

Abstract. In the paper, the current state of development of transport equipment, namely belt conveyors, is presented. Today, belt conveyors are used in all sectors of the economy and transport thousands of tons of products; their length can reach 15 thousand meters. But along with the widespread use of the belt conveyors there is a problem of their reliability. According to researches, the most valuable and responsible parts such as drum and conveyor belt wear out rapidly and significantly increase the cost of transportation. In this paper, it is stated that the main cause of the drum and belt failure is vibration loads and dirt (transported material, moisture, etc.); besides, with taking into account the trend of increase of the conveyor length, vibration loads also increases, hence, accelerating the drum wear. Therefore, many studies and works of scientists are focused on the problem of interaction between conveyor belt and the drum proposing a lot of solutions on how to increase life of the drum and belt, namely the lining of the drums with high-friction material. And only few of them are devoted to the problem of choosing the optimal thickness of the lining.As the world experience on conveyor construction shows, this problem is quite relevant for conveyor transport and, for a number of reasons, is quite difficult for obtaining an analytical solution. The reason is, first of all, the absence of adequate physical and mathematical models and in a variety of operating factors of different physical nature, especially in zone of the belt contact with the drum when it becomes wet or pieces of transported material occurred in it. It is experimentally established that efficiency of conveyor largely depends on the degree and nature of contamination of the drum because contamination of the inner surface of the belt with particles of transported material (coal, sand, ore, etc.) can lead to a significant reduction in the coefficient of adhesion. When drums with rubber lining are used in the belt conveyors, tractive ability of the belt, as well as forces of friction, is also determined by the rate of deformation of the lining layer. It is experimentally established that value of the coefficient of adhesion is directly proportional to the thickness of the rubber lining and inversely proportional to the hardness of the rubber. The rubber lining of the drum allows to: increase traction of the belt; reduce dynamic forces of the “belt-drive drum” system; reduce vibration stress in parts and assemblies of the conveyor (lining dampens both low-frequency and high-frequency oscillations); reduce belt wear; eliminate or at least significantly reduce the impact of contamination due to special corrugations; reduce a possibility of occurrence of self-oscillating process associated with either high belt speeds (about 20 m/s), or with the phenomenon of its slip: one of the main reasons is contamination in the contact zone. Keywords: belt conveyor, drum, rubber lining, dissipation, dissipation coefficient, physical and mechanical properties, aging, adhesion coefficient.

Optimizing a Disassembly Sequence Planning With Success Rates of Disassembly Operations via a Variable Neighborhood Search Algorithm

Disassembly planning is an effective way to recycle valuable parts or materials from end-of-life products. Due to the parts are easily affected by some unpredictable factors in the real disassembly process (such as defective parts and human factors), there may be failure operations that cannot successfully disassemble the corresponding parts in the real world. Therefore, a partial disassembly sequence planning with uncertainty is proposed in the paper, where the success rates of disassembly operations are formulated to model an expected profit-based disassembly sequence planning. Also, a general variable neighborhood search algorithm is developed to optimize the mathematical model. Meanwhile, in the approach, a heuristic procedure is utilized to obtain a high-quality initial solution, and four different neighborhood structures are introduced to improve the disassembly solution. Its superiority and effectiveness are well illustrated by two case studies and comparison with two existing metaheuristics, i.e., artificial bee colony algorithm and genetic algorithm.

Fused deposition modelling process parameters influence on the mechanical properties of ABS: A review

Abstract One of the main objectives of Fusion Deposit Modeling (FDM) is to sketch and produce functional components for production unit such as in engineering field and medical field. These functions should be assisted by knowledge How unique boundary settings influence mechanical transport of items. Notwithstanding, getting this data is unpredictable undertaking - a wide scope of potential materials − 3D printers - cutting programming - measure boundaries. It is hence critical to survey the progressing research on this point, not exclusively to distinguish the functional and valuable parts of the cycle, key boundaries and restrictions, yet in addition to comprehend the pertinence of the outcomes. These examinations and how this can be applied in future investigations and in real applications. A methodical artistic pursuit was led dependent on the order dependent on the sort of 3D printing polymer. The most significant cycle boundaries that are accepted to influence the strain and adaptability of FDM models are talked about while considering the outcomes introduced in the writing. It shows the fundamental contrast between the mechanical properties and examples of the material and the mechanical properties of the last FDM part.

INTELIGENTNE BADANIA OCHRONNE UKRYTEGO DZIEDZICTWA ŚRÓDZIEMNOMORSKIEGO

In the Mediterranean area, there are hundreds of ancient cities that have ceased to exist, and millions of valuable parts of buildings and sculptures remain hidden or abandoned. This resource requires special care and protection. There is probably a much larger part of this resource, as yet unexposed to view, remaining to be discovered. A number of historic buildings remain underground or underwater, and are not properly protected against damage or robbery. Protected areas, with limited access due to the potential occurrence of ancient monuments underground or underwater, should be designated. In order to assess the range of occurrence of such monuments from bygone cultures, it is necessary to carry out specialized field studies. The author indicates that smart digital technologies, such as digital maps of the area, satellite and aerial photographs and electromagnetic geo-radar surveys, could be used for such research.

Control of crack propagation on SUS316 plate by laser-induced patterning: heat treatment and cladding

A practical method is proposed to control the direction of crack propagation and to generate a crack-growth-proof (CGP) zone on a metal plate using laser induced line patterns: heat treatment and cladding. To evaluate the effect on crack propagation by the line patterns, we fabricated and tested diverse line-pattern shapes on a thin SUS316 plate of 1 mm thickness, such as single vertical line; one, three, and five horizontal lines; one and three 45°-tilted lines; X-shaped lines; and rectangular box lines by both laser heat treatment and cladding process. For description of metallurgical change via the pattern and its effect on the crack growth, we did a microstructural analysis of the treated SUS316 specimen. For example, ultimate tensile stress (σu) and fracture strain changed according to the pattern shapes. A specimen treatiing a rectangular line pattern of 4×20 mm showed an increase of σu to about 8.8 %, and fracture strain also increased by 10 % compared to that of a SUS316 plate. Through this work, we verified that the CGP zone could be controlled on a thin metal plate using the proposed method for protection of highly valuable mechanical parts mounted on it.

Eliminating cross-camera bias for vehicle re-identification

Vehicle re-identification (reID) often requires to recognize a target vehicle in large datasets captured from multi-cameras. It plays an important role in the automatic analysis of the increasing urban surveillance videos, which has become a hot topic in recent years. However, the appearance of vehicle images is easily affected by the environment that various illuminations, different backgrounds and viewpoints, which leads to the large bias between different cameras. To address this problem, this paper proposes a cross-camera adaptation framework (CCA), which smooths the bias by exploiting the common space between cameras for all samples. CCA first transfers images from multi-cameras into one camera to reduce the impact of the illumination and resolution, which generates the samples with the similar distribution. Then, to eliminate the influence of background and focus on the valuable parts, we propose an attention alignment network (AANet) to learn powerful features for vehicle reID. Specially, in AANet, the spatial transfer network with attention module is introduced to locate a series of the most discriminative regions with high-attention weights and suppress the background. Moreover, comprehensive experimental results have demonstrated that our proposed CCA can achieve excellent performances on benchmark datasets VehicleID and VeRi-776.

Миллий маданий концепт тушунчаси

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