Concept Of Cycle Research Articles

Design and manufacture of long-lasting lightweight structures for sustainable mobility

The focus in this paper is on the latest results of the crash, reuse and remanufacturing design concepts for a durable sill structure for a modular vehicle platform architecture. Like the entire vehicle platform the sill structure is also designed modular, with the possibility to replace damaged or to reuse intact components. The innovative sill structure consists mainly of durable carbon fiber reinforced composite plastic (CFRP) crash absorbers in the form of tubes and a C-profile manufactured by a cost effective serial process – pultrusion. Those crash tubes were designed using experimental and numerical knowledge based on internal studies. A special layup was chosen to achieve the highest energy absorption in case of a crash. Therefore, the mechanism of crushing and inversion are targeted. The innovative alignment of the crash tubes consider protection against oblique impact according to the latest NCAP standards. For a smooth transmission of the incoming force into the tubes, an auxetic-structured buffer element is placed between the outer C-profile and the crash tubes. In case of a crash or a vehicle design change, intact crash tubes can be reused or remanufactured thanks to the high durability and detachable connections, which corresponds to a cycle concept.

Measuring landscape evolution from inception to maturity: Insights from a coastal dune system

The concept of the geomorphic cycle is a foundational principle in geology and geomorphology, but the topographic evolution of a single landscape from inception to maturity has been difficult to demonstrate in nature. The onlapping dunes of the Cooloola Sand Mass (CSM) in eastern Australia provide an ideal chronosequence to evaluate landscape evolution. Here commonly assumed properties on which landscape models are based (i.e., conservation of mass and major factors contributing to landscape change) can be physically measured and accounted for. Our field based measurements and forward numerical models demonstrate that dunes, like other landscapes, relax in an exponential manner. The emplaced dunes evolve through an initial phase of rapid topographic adjustment associated with the dominance of landsliding. This phase continues for ∼1 kyr until hillslope gradients are lowered below their angle of repose (0.65 m m−1 or 33°). Once sufficiently lowered, the dunes evolve through slow, soil creep processes. These findings of dual transport regimes are validated by stratigraphic records at all excavated dune foot-slopes and we propose that this evolution can be measured by the distribution of curvature (C) of a landform, specifically its standard deviation (σC), as a measure of surface roughness. Surface roughness smooths with time through diffusional sediment transport that lowers local relief. The value and its rate of smoothing can define the stage in evolutionary development and help infer processes, which makes it an important morphometric tool for understanding landscapes. These observations highlight that under stable evolutionary conditions, the development of the landscape is governed by the physical properties of the dune's parent material. In addition, our findings support landscape evolution inferences from numerical and physical models and the coupling of granular material physics with landscape change.

Embedding and global stability in periodic 2-dimensional maps of mixed monotonicity

In this paper, we consider nonautonomous second order difference equations of the form xn+1=F(n,xn,xn−1), where F is p-periodic in its first component, non-decreasing in its second component and non-increasing in its third component. The map F is referred to as periodic of mixed monotonicity, which broadens the notion of maps of mixed monotonicity. We introduce the concept of artificial cycles, and we develop the embedding technique to tackle periodicity and globally attracting cycles in periodic 2-dimensional maps of mixed monotonicity. We present a result on globally attracting cycles and illustrate its application to periodic systems. The first application is a periodic rational difference equation of second order, and the second application is a population model with periodic stocking. In both cases, we prove the existence of a globally attracting cycle.

Life Cycle Assessment support to environmental ambitions of EU policies and the Sustainable Development Goals.

The European Green Deal and the Sustainable Development Goals (SDGs) ask for a more holistic approach to production and consumption along value chains. The role of Life Cycle Assessment (LCA) in supporting policy design and monitoring is then pivotal to achieving policy ambitions. This paper explores the potential support of LCA to EU (European Union) policies and the SDGs, considering also the Planetary Boundaries (PBs) framework. The assessment focuses on (a) the relationship between LCA, the SDGs, and the European Green Deal; (b) the potential use of LCA in support of the monitoring of SDG12 and the environmental impacts of production and consumption; and (c) the relevance of an absolute sustainability dimension, including the integration of the PBs framework in EU policy and the SDGs. Results highlight that the interlinkages between LCA, EU policy, SDGs, and the PBs can be classified as existing, missing, or existing depending on the LCA framework. In general, LCA was identified to strengthen and further enable EU policies toward achieving the SDGs while remaining within the physical limits of the planet. This is because LCA can be a pivotal method to quantify and assess environmental impacts of value chains and consumption patterns, enabling the evaluation of their implication on environment-related SDGs and assessing them against the PBs. The example of the Consumption Footprint highlights that the concept and Life Cycle Impact Assessment method of an LCA framework can determine the linkage among EU policy, SDGs, and the PBs.Integr Environ Assess Manag 2022;18:1221-1232. © 2022 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

Anticipating Criteria for Discharge after Lu-177-PSMA Treatment - Discussion of Several Scenarios

The aim is to add a pragmatic contribution to the discussion of an algorithm to discharge patients treated with Lu-177-PSMA under the aspect of radiation protection. This also may be applied to therapies with other radioactive tracers in the future. 478 cycles of Lu-177-PSMA-617 (140 patients) were analyzed. The remaining activity in the patient and the dose rate were correlated. From frequent intratherapeutic measurements (biexponential fit) scenarios for discharging patients are deduced. Thirty-four per cent of all patients treated with Lu-177-PSMA received 3 to 5 cycles per calendar year. The dose limit of 1 mSv per calendar year (German Law) at a distance of 2 m from the patient would be exceeded in 10 % and 15 % of the treated patients if discharged 72 hours after treatment given 3 and 4 cycles per calendar year, respectively. Mean specific dose rate was 0.00462µSv/(h MBq) at a distance of 1 m. A universal correlation between dose rate and the remaining activity in the patient could not be found. The multi cycle concept of the therapies with Lu-177 PSMA has to be taken into account prospectively when discharging the patients. Given the physical half-life of Lu-177 an anticipation of 4 treatment cycles per calendar year leads to a clearly arranged, conservative rule.

Preimplantation Endometrial Transcriptomics in Natural Conception Cycle of the Rhesus Monkey

There is no report on preimplantation phase endometrial transcriptomics in natural conception cycles of primates. In the present study, the whole-genome expression array of endometrium on Days 2, 4, and 6 post-ovulation (pov) in proven natural conception (Group 1; n = 12) and non-mated, ovulatory (Group 2; n = 12) cycles of rhesus monkeys was examined, compared, and validated. Of fifteen (15) genes showing differential expression (>2-fold; pFDR < 0.05), six genes (CHRND, FOXD3, GJD4, MAPK8IP3, MKS1, and NUP50) were upregulated, while eight genes (ADCY5, ADIPOR1, NNMT, PATL1, PIGV, TGFBR2, TOX2, and VWA5B1) were down regulated on Day 6 pov as compared to Day 2 pov in conception cycles. On Day 6 pov, four genes (ADCY5, NNMT, TOX2, and VWA5B1) were down regulated, and AVEN was upregulated in conception cycles compared with the non-conception cycle. These observations were orthogonally validated at protein expression level. Group-specifically expressed unique genes in conception cycles influence the process of induction of immune-tolerance, while the genes expressed in both groups influence processes of protein targeting and metabolism. A triad of timed-actions of progesterone, seminal plasma, and preimplantation embryo putatively regulate several input molecules to CREB, NF-kB, and STAT regulatory networks during secretory phase towards evolution of endometrial receptivity in the rhesus monkey.

Investigating the application of Kalman Filters for real-time accountancy in fusion fuel cycles

Tritium accountancy in the fusion fuel cycle is a significant concern for the operation of commercial devices. It is expected that a limit on the maximum amount of tritium inventory in the system will be implemented, meaning that accountancy of the tritium inventory in the fuel cycle will need to be as accurate as possible. This is difficult since not all locations along the fuel cycle can benefit from the implementation of a tritium accountancy sensor and measurements will inherently contain error. Commercial fusion plants will also operate continuously, challenging current accountancy techniques that rely on static processes in well-controlled environments. In this paper a simple fusion fuel cycle concept is defined and the tritium inventory over time of each component is modelled using the Euler Approximation of a series of differential Equations in Python. This information is then used to simulate sensor measurements at specific points on the fuel cycle and then passed through a Kalman Filter (KF) to improve the accuracy of the true measurement of the sensors.

Analisis Siklus Hidup Pariwisata dalam Pengembangan Pariwisata Berkelanjutan di Kawasan Wisata Lembah Harau, Kabupaten Lima Puluh Kota

Lembah Harau is a nature tourism park in Lima Puluh Kota Regency. Lembah Harau area has with strong potential to attract tourist both in natural attraction and man-made attraction. Concept of tourist area life cycle is used to analyze the position of Lembah Harau based on that concept and then to develop sustainable tourism in Lembah Harau. Sarosah Village is a man-made attraction in Lembah Harau. In which it has the role towards man-made and natural attraction in Lembah Harau area are needed to develop the area for sustainable tourism development. There is the strong relationship between Sarosah Village and Lembah Harau itself to bring the Lembah Harau area to rejuvenation level. Based on natural attraction, Lembah Harau area is consolidation to stagnation level. Although, the concept of Sarosah Village is difference with Lembah Harau area’s concept as a conservation area. But Sarosah Village gives the positive impact to develop Lembah Harau and Sarasah Village is following the sustainable development tourism concept.
 Keywords: Development, natural tourist attraction, man-made tourist attraction, tourist area life cycle.

Scaling up UAVs for land administration: Towards the plateau of productivity

Unmanned aerial vehicles (UAVs) are considered an innovative tool for land administration. However, despite the prospects and market opportunities in the domain, there is a gap between experimentation and widespread technology diffusion. In this work, the Framework for Effective Land Administration (FELA) and the Hype Cycle concept are integrated to understand the dynamics of the innovation process of UAVs for the land administration sector. Empirical data stems from literature and interviews of UAV and land administration experts worldwide. The majority of experts estimate UAV technology to be in a phase in which the innovation needs to overcome initial unmet expectations to foster market development and increased adoption. The assessment indicates the changing importance of different FELA pathways during this process. Enabling laws and policies and supporting governance, accountability and institutions are crucial to create such a UAV-friendly national ecosystem early on and allay exaggerated expectations. Once this ecosystem has been made, market demand is expected to surge driven by partnerships, adapted standards, tech advocacy and awareness-raising campaigns, highlighting the superiority of high-resolution data amongst other benefits of UAV technology. These insights can be used as a baseline to direct national strategic decisions towards the increased adoption of UAVs in land administration.

Building Customer Engagement Through User-Generated Content: A Case Study on @Bt21Stuff.Id

As the popularity of K-Pop culture increases rapidly in Indonesia, many people started to see this as an opportunity to start a business. The business which started to get popular amongst K-Pop fans community nowadays is an online shopping entrusted goods service business which specialized in providing a service to help K-Pop fans in purchasing their favorite idol merchandises directly from South Korea. The competition for this online shopping entrusted goods service business keeps growing and increases every day, due to the popularity of K-Pop and the customers plays a crucial role in this business. Therefore, maintaining a customer engagement for this business is very necessary. The objective of this research is to reveal the contribution of user generated content created by the customers as a way to build customer engagement of @bt21stuff.id and also to reveal the motivations behind the creation of user generated content by the customers. This research is using a qualitative methodology and guided by using the concept of customer engagement cycle by Sashi (2012). The findings of this research shows that the user generated content plays a role in each stage of the customer engagement cycle and that the customers are mostly motivated by the empowerment motives in creating the user generated content.

An autonomic management system for IoT platforms based on data analysis tasks

In this work, we propose an autonomic management system (AMS) for the internet of things (IoT) platforms, which uses the concept of autonomic cycle of data analysis tasks to improve and maintain the performance in the IoT platforms. The concept of 'autonomic cycle of data analysis tasks' is a type of autonomous intelligent supervision that allows reaching strategic objectives around a given problem. In this paper, we propose the conceptualisation of the architecture of an AMS composed by an autonomic cycle to optimise the quality of services (QoS), and to improve the quality of experiences (QoE), in IoT platforms. The autonomous cycle detects and discovers the current operational state in the IoT platform and determines the set of tasks to guarantee a given performance (QoS/QoE). This paper presents the details of the architecture of the AMS (components, knowledge models, etc.), and its utilisation in two case studies: in a typical application in an IoT context, and in a tactile internet system.

A weighted group shuffled decoding for low-density parity-check codes

In this paper, we have developed several concepts such as the tree concept, the short cycle concept and the group shuffling concept of a propagation cycle to decrypt low-density parity-check (LDPC) codes. Thus, we proposed an algorithm based on group shuffling propagation where the probability of occurrence takes exponential form exponential factor appearance probability belief propagation-group shuffled belief propagation (EFAP-GSBP). This algorithm is used for wireless communication applications by providing improved decryption performance with low latency. To demonstrate the effectiveness of our suggested technique EFAP-GSBP, we ran numerous simulations that demonstrated that our algorithm is superior to the traditional BP/GSBP algorithm for decrypting LPDC codes in both regular and non-regular forms

ТЕОРЕТИЧНІ ОСНОВИ ВИЗНАЧЕННЯ СУТНОСТІ РОЗВИТКУ ОРГАНІЗАЦІЇ

The essence of the concepts “development” and “organization development” has been studied. Three main approaches to development are identified through: study and distinguish system properties; formation of interpretations of this category; comparison of the concept of development with similar categories in terms of scientific knowledge of system behavior. An analysis of the theory of enterprise's development are carried out based on the research of domestic and foreign scientists. As a result of this analysis, specific manifestations of development were identified, and its modern features are studied. The main characteristics of the “development” category are highlighted. The classification features of development in the organization are considered. The main theoretical provisions that form the basis of the development of any organization are presented: the theory of targeted development, the theory of cyclical development, the concept of the life cycle of the organization. It is determined that development in the organization is based on the laws of ontogenesis, composition and proportionality, self-preservation, competition, scale effect, the transition to new scientific approaches and principles, synergy, orderliness, economic laws, the law of development. The factors that determine it are given. It is substantiated that the development of the enterprise is closely connected with its resource potential: the volume of resources possessed by the enterprise has great importance for the growth of the organization, but their presence does not indicate the development. It is noted that the solution to the problems of enterprise's development depends on the management, because economic results are determined by the level of reasonableness of management decisions on taking into account the conditions of production and products' sale, forecasts about their changes in the future. The authors’ definition of enterprise's development is proposed as a set of targeted, intensive and qualitative changes in the economic nature of activity that occur at the enterprise as a result of contradictions in the internal environment and the influences of external environmental factors.

Cмена уровней сейсмической опасности в полном 12-летнем сейсмогеодинамическом цикле Южно-Байкальской впадины: результаты гидроизотопного (234U/238U) мониторинга

In the western part of the South Baikal Basin, spatial-temporal distribution of earthquake epicenters is characterized by quasi-periodic seismic reactivations. The strongest earthquakes occurred in 1999 (South Baikal, Мw = 6.0), 2008 (Kultuk, Мw = 6.3) and 2020 (Kudara, Мw = 5.4). Since 2013, we have been monitoring the 234U/238U activity ratio (AR4/8) in groundwater as an indicator of crack open/closing that promotes/prevents water circulation in active faults of the basin. From monitoring results, we define the concept of a complete seismogeodynamic cycle as a change from crustal compression to extension occurred during 12 years with a successive increase in seismic hazard levels.

ОНТОЛОГИЧЕСКИЕ ОСНОВАНИЯ КЛАССИФИКАЦИИ ИСТОРИЧЕСКИХ ЦИКЛОВ

The author of the article considers the possibility of building a theory of cycles by referring to the method of ontological modeling, which goes back to the models of being that were popular in the cultures of the ancient world. Many of them have 8–10 elements, but there are also those with 30/32, 45 and 64 elements, etc. In modern methodology, a comparable volume of cycles takes place only in the concept of large economic cycles of Kondratiev lasting from 47 to 60 years. The object of analysis is the geopolitical processes of the 19th–21st centuries. The subject of analysis is the final stages of macrocycles of historical development. The purpose of this work is to establish the general patterns of development and self-organization in historical processes by means of humanitarian research. The lower limit of long cycles is interpreted in the present application with respect to the 45-element ontological model of the world order in the Indian Vastu Vidya. On this basis, a 90-year geopolitical cycle is formed, limiting the element of wars. The internal dynamics of the development of participants in geopolitical interactions is described within the framework of a 32-year cycle, correlated with the first half of the 64-element cycle of the Chinese "Book of Changes", which describes the cycle of cognitive activity. Going beyond this cycle by adding another 8 stages leads to a 72-year cycle of radical change in self-identification and political course. Based on the results of the study, the author concludes about the prospects of the method of ontological modeling for the analysis of historical processes and the determination of future development.

FPGA-Based Implementation of Ship Detection for Satellite On-Board Processing

At present, the raw echo data captured by spaceborne SAR is usually downlinked to the ground stations for imaging and analysis. If the SAR data can be processed on-board, the processing results could be transmitted to users directly through broadcast distribution, which can greatly reduce the delay time for emergency applications. However, on-board processing implementation faces many challenges due to the space radiation environment and limited resources of the satellite. In this paper, an FPGA-based implementation of ship detection for on-board processing is proposed, which has high efficiency in logic and memory resources. First, the hardware-oriented clustering approach is proposed. Image processing operations with similar regularity of data access can be mapped in one processing engine, which can reduce the employment of logic resources. Second, the concept of the data-buffering cycle (DBC) is proposed. The DBC provides a method to analyze the intermediate data and optimize the memory reuse. Finally, based on the above optimization methods, the FPGA-based implementation for a ship detection algorithm is presented. Compared with the traditional methods, the experimental results show the efficacy of our proposed method with lower consumption in logic and memory resources.

Кибернетическая революция, шестой длинный цикл Кондратьева и глобальное старение

The article aims to show the potential of the synthesis of Kondratiev’s concept of long cycles (waves), the theory of production (technological) revolutions, and the concept of the leading sectors and technological orders. Based on these theories, the article analyzes the contemporary cybernetic revolution that started in the 1950s and puts forward a prediction that the final phase of the cybernetic revolution will begin in the 2030s and that this final phase will merge with the sixth Kondratiev wave. The basis of the sixth technological order will be the complex of the leading technologies MANBRIC — medicine, additive technologies, nanotechnologies, robotics, IT, and cognitive technologies. Most of the technologies within this complex will be self-governing systems. One more important factor considered in the analysis is the global population ageing, which will have a significant impact on the development of technologies in the final phase of the cybernetic revolution and the sixth technological order. Global aging will spur the advancement of medical science and related fields and make medicine the most important integrating component of the emergent MANBRIC complex. It can be predicted that the upcoming final phase of the cybernetic revolution will be accompanied by the disappearance of K-waves and slowing down of the technological progress.

ВПЛИВ РОЗВИТУ ОБЛІКОВО-ЕКОНОМІЧНИХ СИСТЕМ НА ЕКОНОМІЧНУ БЕЗПЕКУ ПІДПРИЄМСТВ В ЗАЛЕЖНОСТІ ВІД ЦИКЛІЧНОСТІ ЕКОНОМІЧНИХ ПРОЦЕСІВ

Management experience, the availability of effective tools for generating relevant information and the implementation of effective management decisions, the quality of the information base for the management system significantly affect the stability of the functioning of an economic entity and its economic security and, as a result, are able to either stimulate or minimize the risk of depressive phenomena in the economy. On the other hand, "shock" situations and disturbances in the balance of the economic system also affect the accounting methodology, since the stagnation of the national economy or its separation from the business sector causes the appearance of a chaotic beginning in the organization of the economic mechanism of economic entities and over time forces to revise the established approaches to accounting methodology. In order to reveal the logic of the evolutionary processes of the formation of accounting and analytical systems from the perspective of economic security, the article attempts to determine the relationship between the stages of its development and cyclical processes in the economy, that is, in the context of the concept of the life cycle of systems. The article proposes an approach that allows us to identify how different types of global economic crises affect the state of economic security of enterprises due to macroeconomic factors. A number of indicators of the external and internal environment have been determined, which influence the economic security of the enterprise and which, in turn, can be considered directions in which it is appropriate to conduct research on its formation. The goals and tasks of the accounting and analytical system in the conditions of crisis processes in the economy were formulated, which made it possible to develop the concept of ensuring the economic security of enterprises, which is the basis for managing the economic security of the enterprise and emphasizes the definition of the main stages of its implementation in the relationship and interaction of the influence of various factors.

Структурные изменения экономики регионов Северо-Запада России: институциональный фактор

Balancing out uneven regional development and territorial disparities is an urgent task, and its solution requires considering the geo-economic features of various parts of Russia’s spatially structured territory. This study aims to describe trends in the economic space transformation and structural changes in the economy of the North-Western Federal District. The economic space transformation is explored theoretically and methodologically, drawing on economic theory and geography, the concepts of cluster and power generation cycles, regional economics and other theories. Institutional and economic research of income capitalisation and the role of the institutional factor is carried out, along with regional gross value added (GVA) analysis by type of activity. The study also investigates the movement of capital (rent) in the economic space. There are several noticeable trends: the Arkhangelsk and Murmansk regions, the Komi and Karelia Republics have diversified their economies by developing manufacturing and mining, and the Murmansk and Pskov regions by stimulating agriculture. Regional factors generating rent at significant transaction costs are shown to be affected by institutional influences. It is concluded that structural changes in the economy of the Russian North-West regions are wavelike in nature. The index of regional GVA and industrial market development points to the existence of a transition zone between the structural phases of the wave, most of the transition taking place in 2014. The second phase of the wave was triggered, along with new structural changes, by the international sanctions and growing confrontation, which reduced capital outflow and affected further structural changes in the regional economy.

Technologies integration to achieve brake thermal efficiency beyond 55% for HD diesel engines

This study focuses on the technologies integration to aim about 60% indicated thermal efficiency (ITE) with a single-cylinder HD diesel engine, roughly equivalent to 55% brake thermal efficiency (BTE) with multiple-cylinder engines. A new thermodynamic cycle concept and a new heat insulation structure were discussed as the key integrated technologies. Otto cycle is the best thermodynamic cycle for ideal thermal efficiency. However, significant increase in heat release rate around top dead center results in higher cooling loss and sometimes in deterioration of late combustion under a higher compression ratio without any improvement in ITE. The newly proposed cycle is the hybrid of isobaric cycle and following steep pressure increase up to peak firing pressure (PFP) constraint from the timing when in-cylinder volume change rate becomes significant, which suppresses the average gas temperature. For further cooling loss reduction, the new in-cylinder wall insulating concept was investigated. The in-cylinder insulating effect was much significant by applying not only on the piston crown but also on the cooling side of piston. Although the test engine hasn’t been optimized yet, ITE was almost reached at about 60% by means of the multiple-injector concept with compression ratio of 23.5:1.