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Zawiła-Niedźwiecki, Janusz. "Structuring Knowledge Management – Classical Theory, Strategic Initiation And Operational Knowledge Management (part I)." Foundations of Management 7, no. 1 (2015): 253–66. http://dx.doi.org/10.1515/fman-2015-0041.
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Abstract The article is the generalization of experience of the implementation project, which has been treated as well as a research field. The results are presented in two parts. The first part includes: a description of the classical approach to knowledge management and shows the concept of structure of process of knowledge management with a description of the procedure in each step of the process. The key idea is to divide the process in three spirals of actions: spiral of perfecting the collection of knowledge; spiral of the perfecting of the formulation of knowledge; spiral of perfecting the utilization of knowledge. Part II of this paper is article Structuring Knowledge Management – Levels, Resources And Efficiency Areas of Knowledge Management (DOI: 10.1515/fman-2015-0042).
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Hou, Chongchi, Wenzhong Zheng, and Wei Chang. "BEHAVIOUR OF HIGH-STRENGTH CONCRETE CIRCULAR COLUMNS CONFINED BY HIGH-STRENGTH SPIRALS UNDER CONCENTRIC COMPRESSION." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 26, no. 6 (2020): 564–78. http://dx.doi.org/10.3846/jcem.2020.12913.
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This paper tested the behaviour of 32 high-strength concrete columns confined by high-strength spirals under concentric compression. The test parameters included unconfined concrete compressive strength, spiral yield strength, volumetric ratio, and spiral spacing. The results showed that bulging and shear sliding were the two characteristic types of failure patterns of the thirty-two confined columns, depending on spiral spacing and concrete strength. Moreover, the spiral in most specimens did not yield at the confined concrete compressive strength. An analytical confinement model for high-strength concrete columns confined by high-strength spirals was proposed. In this proposed model, the calculated value of the spiral stress at the confined concrete compressive strength was used to calculate the feature points of the stressstrain curve. The proposed model showed good correlations with available experimental results of 64 columns.
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Selberg, Rebecca, and Paula Mulinari. "Exit Spirals in Hospital Clinics: Conceptualizing Turnover Contagion Among Nursing Staff." Scandinavian Journal of Public Administration 26, no. 1 (2022): 87–107. http://dx.doi.org/10.58235/sjpa.v26i1.7045.
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This article introduces the concept of the exit spiral to conceptualize processes in which poorly functioning hospital clinics or wards enter a phase of decline due to widespread dissatisfaction among staff, prompting turnover contagion. In describing and analyzing cases amassed during observations and interviews, the article provides tools to identify, analyze and halt exit spirals. Once a hospital ward finds itself in an exit spiral, employees experience increased workloads, loss of control and discontent. Managers may react with increased rigidity. Instability, discontinuity, and insufficient knowledge transfer are processes sparked by exit spirals. The article suggests that exit spirals can be halted if management recognizes the depth of organizational decline and directs resources to resolve it. This requires further analysis, stimulation of employee voice, innovation, and flexibility.
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Mañas Rodríguez, Miguel Ángel, Yolanda Estreder, Vicente Martinez-Tur, Pedro Antonio Díaz-Fúnez, and Vicente Pecino-Medina. "A positive spiral of self-efficacy among public employees." Personnel Review 49, no. 8 (2020): 1607–17. http://dx.doi.org/10.1108/pr-09-2018-0364.
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Purpose The purpose of this paper is to test a positive spiral of self-efficacy among public employees. The spiral proposes that self-efficacy is positively related to extra-role behaviors. These behaviors in turn are positively related to subsequent self-efficacy. Design/methodology/approach A total of 260 public employees participated in three waves of data collection: self-efficacy (T1); extra-role behaviors (T2); self-efficacy (T3). Findings The results confirmed the existence of a positive spiral of self-efficacy. There was a positive and significant link from self-efficacy of employees (T1) to extra-role behaviors (T2). In addition, it was found a positive and significant relationship between extra-role behaviors (T2) and subsequent self-efficacy (T3) once the link from self-efficacy in T1 and T3 was controlled for. The mediation role of extra-role behaviors was also confirmed. Originality/value The examination of positive spirals is one of the critical challenges of the investigation of personal resources. In the current research study, the authors test the positive spiral of a critical personal resource such as self-efficacy. Additionally, the lagged design permits a solid test of the aforementioned spiral.
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Fidalgo-Blanco, Ángel, María Luisa Sein-Echaluce, and Francisco García-Peñalvo. "Epistemological and ontological spirals." Program 49, no. 3 (2015): 266–88. http://dx.doi.org/10.1108/prog-06-2014-0033.
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Purpose – The purpose of this paper is to introduce the development of a knowledge management system. It allows the creation of new knowledge, its consolidation, distribution and combination in the field of educational innovation, in such a way that the knowledge is transferred from individuals to the organisation and from the organisation to individuals. To achieve this, the knowledge spirals of Nonaka are integrated. The epistemological spiral is used to obtain the ontologies that feed the ontological spiral. Design/methodology/approach – More than 600 university teachers participated in the research and the development of the management system, in which more than 400 educational innovation experiences and 1,100 authors have been included. Findings – The epistemological spiral is used to obtain the ontologies that feed the ontological spiral. The result is a double spiral that allows the contribution of a conceptual model and the development of an innovative tool that enables and automates the effective management of knowledge in educational innovation. Practical implications – A repository about educational innovation best practices and experiences is available. Social implications – The presented model for the sustainability and evolution for an educational innovation best practices repositories has a huge impact for education innovation recognition in the professional development of university teachers. On the other hand, it is way of sharing best practices of educational innovation all over the world. Originality/value – The major contribution of this research work is based on the way that the knowledge is transferred from individuals to the organisation and from the organisation to individuals. The classification schema and the proposed indicators are based on the elicitation of more than 600 experts and the study of a corpus of more than 400 educational innovation experiences that involve 1,100 university teachers approximately.
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Bondar, E. A. "Spiral Dynamics as a Tool for Effective Management of an Organization." Obshchenauchnyy zhurnal (General Science Academic Journal), no. 1 (February 26, 2024): 38–44. http://dx.doi.org/10.33920/nik-04-2401-05.
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The work analyzes the values of an organization's culture at different stages of its life cycle based on the spiral dynamics model, which allows us to better understand and explain the evolution of values within the organization and predict its future development, according to which each level of the organization is characterized by a certain color. The directions of the company's development and ways to implement strategic goals are described. It is proposed to use the concept of spiral dynamics for personnel development. The article is devoted to a comprehensive analysis of the possibility of using the theory of spiral dynamics to determine the stage of development of a company, determine the necessary management and leadership skills, develop competencies, create a staff motivation program and train employees in new skills. Organizations go through various stages, from inception to death, and at each stage the values of the organization and its employees may change. The spiral dynamics model helps to understand and explain various cultural and social phenomena and predict the possible direction of society's development. Using the theory of spiral dynamics allows you to more effectively manage an organization and create favorable conditions for its development.
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Castro, Virginia Aparecida, and Janaina de Moura Engracia Giraldi. "Spirals of knowledge in geographical indications: the brazilian wine sector case." Revista de Administração da UFSM 17, no. 3 (2024): e6. http://dx.doi.org/10.5902/1983465986655.
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Purpose: This paper aims to verify how the construction of spirals of knowledge of geographical indications occurs in the Brazilian wine sector and to identify the conversion of the knowledge of Geographical Indication (GI) from tacit to explicit according to the SECI model (the epistemological spiral). Additionaly, to identify how the ontology spiral occurs in the opinion of government agencies, associations and managers of wineries. Design/Methodology/Approach: This research was qualitative and exploratory.The study was delimited to the Brazilian wine sector. All interviews were conducted in person. Twenty interviews with interest groups: government agencies (5 interviews), associations (5 interviews) and managers of wineries (10 interviews). Purpose: This paper aims to verify how the construction of spirals of knowledge of geographical indications occurs in the Brazilian wine sector and to identify the conversion of the knowledge of Geographical Indication (GI) from tacit to explicit according to the SECI model (the epistemological spiral). Additionally, to identify how the ontology spiral occurs in the opinion of government agencies, associations, and managers of wineries. Design/Methodology/Approach: This research was qualitative and exploratory. The study was delimited to the Brazilian wine sector. All interviews were conducted in person. There were twenty interviews with interest groups: government agencies (5 interviews), associations (5 interviews), and managers of wineries (10 interviews). Findings: The Epistemological Spiral is constructed at the individual, group, and organization levels, within the wineries, converting tacit to explicit knowledge according to the SECI model. The Ontology Spiral is completed with the inter-organizational level that, in the case of Geographical Indications, is formed by the Associations. The Ontology spiral is produced in the context of GIs, and the wineries have the generation of knowledge in each one of them and, at the same time, interact within the Associations and form a representative body of GIs. Originality: Within the GIs, there is the generation of knowledge, which is shared between the coopetitors. Knowledge Management of Geographical Indication emerges, and the block that forms the body of the association produces knowledge that adds experiences and strengths of each individual, group and organization, culminating in the dissemination of superior knowledge. Originality: Within the GIs, there is the generation of knowledge, which is shared between the coopetitors. Knowledge Management of Geographical Indication emerges and the block that forms the body of the association produces knowledge that adds experiences and strengths of each individual, group, organization, culminating in a dissemination of knowledge superior.
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Boje, David M., Heather Baca-Greif, Melissa Intindola, and Steven Elias. "The episodic spiral model: a new approach to organizational processes." Journal of Organizational Change Management 30, no. 5 (2017): 683–709. http://dx.doi.org/10.1108/jocm-06-2016-0118.
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Purpose The purpose of this paper is to develop a new model for depicting organizational processes: the episodic spiral model (ESM). Design/methodology/approach On the basis of a strong process view as the orienting paradigm, the authors demonstrate the need for the ESM by discussing the shortcomings of two specific spiral types in the organizational literature – the knowledge creation spiral and the efficacy spiral. Findings A review of each spiral type through the lens of nonlinear assumptions reveals the treatment to date of organizational spirals as uni-directional and insufficient for understanding organizations. The authors propose that managers must undertake a paradigm shift in order to gain a greater awareness of both the environment in which they operate, as well as their process actions. To facilitate this shift, the ESM depicts choice points, chosen and rejected trajectories, and upward and downward environmental drafts, as well as a multi-dimensional environment, as a way of re-conceptualizing approaches to space, time, and change in organization studies. Originality/value The authors propose that the model provides a way for scholars to enhance the study of organizations by understanding that organizations exist in a more dynamic environment than previously studied; recognizing that the organization has a wider range of choices available, and acknowledging the long-lasting ramifications of both choices made and choices discarded; and obtaining a more comprehensive look at the way the organization moves through space and time at any given moment. Taken together, the authors hope that these contributions allow organizational scholars a new approach to theorizing, exploring, and writing about the organizations they study.
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Ropo, Arja, and James G. (Jerry) Hunt. "Entrepreneurial Processes as Virtuous and Vicious Spirals in a Changing Opportunity Structure: A Paradoxical Perspective." Entrepreneurship Theory and Practice 19, no. 3 (1995): 91–111. http://dx.doi.org/10.1177/104225879501900307.
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We develop the beginnings of a grounded theory of entrepreneurship based on the idea that entrepreneurship, in terms of a changing opportunity structure–-consisting of opportunity detection, opportunity facilitation and motivation to pursue opportunity–-can be viewed through a paradoxical perspective that considers the interplay of organizational and individual capabilities as virtuous and vicious spirals across time. The virtuous spiral led toward successful change because of supportive organizational and individual capabilities across time. The vicious spiral led away from successful change because of countervailing organizational and individual capabilities. Paradoxically, however, we found that entrepreneurship developed in both types of spirals. We discuss these points based on two case studies of Finnish banks and bank managers within the fundamentally changing opportunity structure of the banking business in the late 1980s.
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Jugdev, Kam. "Closing the circle: the knowledge management spiral of project management." International Journal of Knowledge Management Studies 1, no. 3/4 (2007): 423. http://dx.doi.org/10.1504/ijkms.2007.012533.
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Bucknall, C. E. "Management of asthma and the audit spiral." Quality and Safety in Health Care 1, Suppl (1992): 22–24. http://dx.doi.org/10.1136/qshc.1.suppl.22.
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Mellick, Larry Bruce. "Management of Childhood Accidental Spiral Tibial Fractures." Pediatric Emergency Care 33, no. 2 (2017): e2. http://dx.doi.org/10.1097/pec.0000000000001030.
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Bouwens, Jan, and Bert Steens. "Full-Cost Transfer Pricing and Cost Management." Journal of Management Accounting Research 28, no. 3 (2016): 63–81. http://dx.doi.org/10.2308/jmar-51390.
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ABSTRACT Full-cost transfer pricing has been criticized for providing production units with insufficient incentives to economize. Our empirical study based on data from a large producer of consumer goods shows that charging full-cost transfer prices to downstream sales units can send upstream production units into a death spiral. However, our results also suggest that production units reduce costs to prevent the death spiral. We observe that managers focus their cost-cutting efforts on unit variable costs and on products with the best sales prospects. These results also suggest that, when production units are at risk of falling into a death spiral, full-cost transfer pricing can serve as a credible commitment device to motivate managers to reduce costs. JEL Classifications: D24; M31; M41; M50. Data Availability: We were given the opportunity to work with a company's proprietary database that contains sensitive and classified data that cannot be disclosed due to a non-disclosure agreement. At the start of our research, the company agreed to be referred to as Carepro, which is fictitious and does not correspond to any other existing company with that same or a similar name.
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Koulik, Volodymir, and Alla Zaharchuk. "Problems of management in the system of spiral dynamics of supply chains." Electronic Scientific Journal Intellectualization of Logistics and Supply Chain Management #1 2020 1, no. 3 (2020): 74–82. http://dx.doi.org/10.46783/smart-scm/2020-3-7.
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The article is devoted to the identification of logistics management problems that arise during the implementation of the process management concept of the spiral dynamics of supply chains. SCM, as a real system of logistics integration and coordination of business processes of the chain provides for the development of interaction and cooperation of its economic entities in the joint use of their resources. The spiral in its development changes the targets: increasing time intervals of forecasting and planning for the long term, the logistical lag of the spiral of the supply chain increases due to the focus on managing global innovation changes in society and changes in technological patterns. This requires appropriate coherence and restructuring of the cognitive and intellectual state of the climate in all sectors of the economy and their human systems. Analysis and generalization of modern research in the field of radical change management has allowed to determine the priority of detection and opportunities for preventive management of worldview changes, values and interests of individuals and their associations in human systems, organizations and society as a whole. The article substantiates the need and expediency of constant updating of the spiral of social thinking, synthesis of knowledge, ideas and intuition of all participants in the supply chain as a unified socio-economic system with a single ultimate goal - to meet the growing needs of consumers. The generalized requirements to spiral management of supply chains are formed and its basic functions and directions of administrative activity are defined. The specific conditions for ensuring the dynamics of the spiral worldview with the help of a set of MEMs specifically focused on supply chain management are considered. The classification of supply chain integration models was proposed, focused on the possibilities and the need to change its targets, forms and methods of management, time scales of operation.
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Koulik, Volodymir, and Alla Zaharchuk. "Problems of management in the system of spiral dynamics of supply chains." Electronic scientifical and practical journal "Intellectualization of logistics and Supply Chain Management" 1, no. 3 (2020): 74–82. https://doi.org/10.46783/smart-scm/2020-3-7.
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<em>The article is devoted to the identification of logistics management problems that arise during the implementation of the process management concept of the spiral dynamics of supply chains. SCM, as a real system of logistics integration and coordination of business processes of the chain provides for the development of interaction and cooperation of its economic entities in the joint use of their resources. The spiral in its development changes the targets: increasing time intervals of forecasting and planning for the long term, the logistical lag of the spiral of the supply chain increases due to the focus on managing global innovation changes in society and changes in technological patterns. This requires appropriate coherence and restructuring of the cognitive and intellectual state of the climate in all sectors of the economy and their human systems.</em> <em>Analysis and generalization of modern research in the field of radical change management has allowed to determine the priority of detection and opportunities for preventive management of worldview changes, values and interests of individuals and their associations in human systems, organizations and society as a whole.</em> <em>The article substantiates the need and expediency of constant updating of the spiral of social thinking, synthesis of knowledge, ideas and intuition of all participants in the supply chain as a unified socio-economic system with a single ultimate goal - to meet the growing needs of consumers. The generalized requirements to spiral management of supply chains are formed and its basic functions and directions of administrative activity are defined. The specific conditions for ensuring the dynamics of the spiral worldview with the help of a set of MEMs specifically focused on supply chain management are considered. The classification of supply chain integration models was proposed, focused on the possibilities and the need to change its targets, forms and methods of management, time scales of operation.</em>
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Liu, Jiahao, Qingwen Ma, and Xianbin Li. "Numerical Simulation of the Combination of Novel Spiral Fin and Phase Change Material for Cylindrical Lithium-Ion Batteries in Passive Thermal Management." Energies 15, no. 23 (2022): 8847. http://dx.doi.org/10.3390/en15238847.
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This paper uses ANSYS Fluent to simulate the heat dissipation of a phase change material (PCM)-based cooling system combined with novel spiral fins for a single battery cell. Compared with a circular fin, a spiral fin with the same contact length can reduce the battery temperature by 0.72 °C, and has a superior temperature uniformity. For the PCM-based system with spiral fins, increasing the spiral width from 2 mm to 8 mm can reduce the battery temperature from 41.27 °C to 39.9 °C. As the number of spiral turns increases from two to eight, the maximum temperature rise of the battery shows a downward trend, and six turns can effectively satisfy the heat dissipation requirements of the battery. With respect to the effect of ambient temperature on the cooling performance, the system with a PCM-spiral fin still exhibits optimal cooling effectiveness compared with the pure PCM and PCM-circular systems.
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Kumar, Yuvika Raj, Zainab Chaudhary, and Pankaj Sharma. "Spiral Intermaxillary Fixation." Craniomaxillofacial Trauma & Reconstruction 5, no. 2 (2012): 97–98. http://dx.doi.org/10.1055/s-0032-1313361.
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Intermaxillary fixation (IMF) remains an important component in the management of many facial fractures. During IMF, dental occlusion plays an important role as a guide and therapeutic tool. Since time immemorial there is a constant quest of oral and maxillofacial surgeons to find a quick way for IMF. The desire to develop an alternate interdental fixation technique, which not only would decrease the risk to the operator and gingival trauma but also accurately satisfy dental occlusion, lead to the development of this novel technique of “spiral IMF.”
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Campanella, Francesco, Armand Derhy, and Francesco Gangi. "Knowledge management and value creation in the post-crisis banking system." Journal of Knowledge Management 23, no. 2 (2019): 263–78. http://dx.doi.org/10.1108/jkm-11-2017-0506.
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Purpose This paper aims to demonstrate the existence of a relationship between the knowledge creation process and competitive advantage in the banking system. The framework of knowledge creation processes adopted in this research is the spiral of knowledge proposed by Nonaka and Takeuchi (1995). The concept of competitive advantage is limited to the measurement of economic value by adopting methods that compare the financial performance of the banks with related markets. The objective of this research is to answer the following research question: Which factors of the spiral of knowledge are relevant for increasing a bank’s economic value? Design/methodology/approach The sample used for this empirical research is composed of 960 banks operating in 24 countries. The sample was analyzed from 2012 to 2015 and includes 3,840 observations. Regarding the methodology, hypothesis demonstration was carried out using a panel analysis (generalized least squares regression) on a set of variables. Findings The results show that Nonaka and Takeushi’s spiral of knowledge has a positive influence on value creation in the banking system. However, not all factors of the four modalities of converting tacit knowledge into explicit knowledge and vice versa have a positive influence on the economic value of banks. Therefore, by excluding factors that have a negative influence or are not significant, it is possible to formulate an empirical model that illustrates the relationship between the spiral of knowledge and the economic value of banks. Originality/value There is a lack of studies on the knowledge creation process in the banking system because most of the research is geographically limited, and empirical tests are performed on small samples. Second, generally, these studies are limited to the relationship between intellectual capital and bank performance measured by accounting ratios. However, intellectual capital is only one component of the broader concept of knowledge. This research uses a large and geographically diverse sample and studies the relationship between the spiral of knowledge and economic value, which is measured by various financial techniques.
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Kalender, Willi. "Dose management in multi–slice spiral computed tomography." European Radiology Supplements 14, S1 (2004): 40–49. http://dx.doi.org/10.1007/s10406-004-0007-3.
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Kim, Hyeong-Gook, Chan-Yu Jeong, Dong-Hwan Kim, and Kil-Hee Kim. "Confinement Effect of Reinforced Concrete Columns with Rectangular and Octagon-Shaped Spirals." Sustainability 12, no. 19 (2020): 7981. http://dx.doi.org/10.3390/su12197981.
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Conventional spiral-type transverse reinforcement is effective at increasing the ductility and the maximum strength of reinforced concrete (RC) columns because it confines the inner concrete and the longitudinal reinforcement. However, when arranging crossties in a RC column with spirals, problems such as mutual interference with longitudinal reinforcement, overcrowding of reinforcement, and deterioration of constructability occur. Furthermore, the loosening of 90 and 130-degree standard hooks due to the lateral expansion of concrete causes buckling of the longitudinal reinforcement. This paper describes the ability of a newly developed spiral-type transverse reinforcement with various yield strengths to confine RC columns subjected to cyclic lateral load and constant axial load. The ductility capacity, energy dissipation, and effective stiffness of RC columns confined by the developed spiral-type transverse reinforcement were compared with those of RC columns confined by typical rectangular reinforcement. The experimental results showed that RC column specimens with the developed spiral-type transverse reinforcement have better performances in terms of ductility capacity and energy dissipation, even though the amount of reinforcement used for the specimens decreased by about 27% compared with the specimen with typical rectangular reinforcement.
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Rassokha, V. I., and N. A. Nikitin. "ESTIMATION OF THE EFFECTIVENESS OF SPIRAL MARKINGS AT RING ROAD INTERSECTIONS." Intellect. Innovations. Investments, no. 2 (2023): 130–41. http://dx.doi.org/10.25198/2077-7175-2023-2-130.
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The results of a number of foreign studies recommend the application of spiral markings to ensure a higher level of safety at roundabouts of medium and large diameter highways. In a number of cities of the Russian Federation, these recommendations were implemented with the introduction of new traffic management schemes using spiral marking of traffic lanes. However, there is no objective data confirming the effectiveness of these measures in Russia. The aim of the study was to evaluate the effectiveness of spiral markings according to two criteria – the number of road accidents and traffic violations at roundabouts before and after the reorganization of traffic. The information was obtained from the traffic police and from video surveillance of individual sections of roundabouts. As a result of the study: 1) the hypothesis of a decrease in the number of accidents and the assertion that new traffic management schemes (spiral markings) by themselves provide greater traffic safety at roundabouts are refuted; 2) it is revealed that drivers tend to violate the requirements of spiral markings, which increases the likelihood of accidents; 3) it is concluded that new traffic management schemes can have a positive impact on road safety only when engineering measures are implemented to physically separate traffic flows on the ring roadway and reduce the speed of vehicles at the entrances and exits of roundabouts. The results of the work revealed promising areas for further research: to study the relationship between the trajectory of vehicles, their location from the point of view of certain intersection sites, spiral markings, characteristics of traffic flow (speed, density, congestion, flow composition), as well as weather condi¬tions. The identification of such links will allow us to evaluate the effectiveness of spiral marking and draw conclusions about the expediency of its further use at roundabouts in the territory of the Russian Federation.
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Lontsikh, P. A., E. P. Kunakov, N. P. Lontsikh, and A. V. Fedotova. "CONNECTION BETWEEN THE DEMING CYCLE AND THE JURAN QUALITY SPIRAL IN THE DEVELOPMENT OF THE PDCA CYCLE AND THE CREATION OF A NETWORK-CENTRIC MANAGEMENT SYSTEM." Quality. Innovation. Education, no. 1 (2023): 3–10. http://dx.doi.org/10.31145/1999-513x-2023-1-03-10.
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The article shows that in relation to a particular research goal, it is important, first of all, to have a good idea and to analyze the analogies and differences of the PDCA cycle, as well as the triad and J. Juran's quality spiral. It is known that based on the postulates of E. Deming and developing them, J. Juran introduced the term quality from the position of the most important principle of quality management - customer orientation. The article shows that based on the known connection between the PDCA cycle and the quality spiral, it was proposed to modernize Deming's PDCA cycle to the PDDCA state. In addition, the article shows that the relationship and dependence of the PDCA cycle and Juran spiral of quality allows to solve the formation of network-centric management system by implementing the algorithm of multiple repetition of actions (OODA): «Observe - Orient - Decide - Act», at each of the stages defined by Deming's PDCA principle while taking into account J. Juran's quality spiral.
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Wu, Pey-Shey, Min-Fu Hsieh, Wei Ling Cai, et al. "Heat Transfer and Thermal Management of Interior Permanent Magnet Synchronous Electric Motor." Inventions 4, no. 4 (2019): 69. http://dx.doi.org/10.3390/inventions4040069.
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Geometric complexities and multi-physical phenomena add difficulties for predicting the thermal field and hence thermal management of an electric motor. A numerical design model that combined electromagnetic and thermal-fluid analysis was proposed for disclosing the detailed temperature distributions of each component in an electric motor. The thermal fluid analysis implemented ANSYS-Fluent code to unravel the thermal field of the interior permanent magnet synchronous electric motor fitted with a smooth or novel spirally twisted channel in the cooling water jacket of a stator with and without shaft cooling. In accordance with the thermal powers converted from the various electromagnetic losses of the electric motor, the complex heat conduction model with realistic thermal boundary conditions was formulated. Initially, the turbulent flow structures and channel averaged Nusselt numbers of the spiral channels without and with the sectional twist were comparatively examined for acquiring the convective thermal boundary conditions in the water jacket. With the high thermal conductivity of the aluminum water jacket, the heat-transfer improvements from the smooth-spiral-channel conditions by using the twisted spiral channel were effective for reducing the average temperatures by about 10% but less effective for altering the characteristic thermal field in the water jacket. At 1290 < Dn < 6455 or 5000 < Re < 25,000 for the spiral channel flows, the channel average Nusselt numbers ratios between the smooth and twisted spiral channels were elevated to 1.18–1.09 but decreased with the increase of Dn or Re. A set of heat-transfer correlations for estimating the Nusselt numbers of Taylor flow in the rotor-to-stator air gap was newly devised from the data available in the literature. While the cooling effectiveness of the water jacket and shaft was boosted by the sectional twists along the spiral channel of the water jacket, the presence of Taylor flow in the annual air gap prohibited the effective rotor-to-stator heat transmission, leading to hot spots in the rotor. By way of airflow cooling through the rotating hollow shaft, the high temperatures in the rotor were considerably moderated. As the development of Taylor flow between the rotor and stator was inevitable, the development of active or passive rotor cooling schemes was necessary for extending the power density of an electric motor. Unlike the previous thermal circuit or lumped-parameter thermal model that predicted the overall temperatures of motor components, the present coupled electromagnetic and thermal-fluid model can reveal the detailed temperature distributions in an electric motor to probe the local hot spots of each component in order to avoid overheating at the early design stage.
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McLinton, Sarven S., Stephanie D. Jamieson, Michelle R. Tuckey, Maureen F. Dollard, and Mikaela S. Owen. "Evidence for a Negative Loss Spiral between Co-Worker Social Support and Burnout: Can Psychosocial Safety Climate Break the Cycle?" Healthcare 11, no. 24 (2023): 3168. http://dx.doi.org/10.3390/healthcare11243168.
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Previous research suggests that co-worker social support predicts burnout, but this relationship may be far more complex, with the potential for a reciprocal cycle of loss. Leading research on loss spirals has explicitly called for more research on interindividual factors such as social support and, by extension, how interventions that operate on these interpersonal resources could play a role in primary and secondary prevention (i.e., intervening in cycles of loss). In this study, we explore the reciprocal relationship between burnout and co-worker social support, with psychosocial safety climate (PSC) as an upstream predictor and moderator of this relationship. Using hierarchical linear modelling (N = 380 frontline healthcare workers, nested within N = 63 teams) on longitudinal data, we found a reciprocal relationship between burnout and co-worker support, which was both triggered and moderated by PSC. These findings provide initial evidence for a social support–burnout loss spiral, wherein individuals with poor co-worker support are more likely to become burnt-out, and in this depleted state they are subsequently less likely to reach out for those social supports when available, which would, in turn, lead to further burnout. This social support–burnout loss spiral is exacerbated when working in a low-PSC context, as the environment does not send positive safety signals about resource scarcity and replenishment. Therefore, PSC may be a potential target for intervention both in primary prevention (i.e., stopping the loss spiral in the first instance) and in secondary intervention, as high PSC signals to workers already in the burnout–support loss cycle when it is safe to reinvest resources or engage in recovery behavior.
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Plchová, Jana. "MEASUREMENT OF THE HUMAN POTENTIAL BY MEANS OF THE INTERNAL ENTROPY IN THE FIRM." Problems of Management in the 21st Century 5, no. 1 (2012): 99–107. http://dx.doi.org/10.33225/pmc/12.05.99.
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The approach expressed by its author A. Kopčaj as a Spiral management is based on the philosophy according to which the firm is perceived as a living organism. Living organisms are guided by the principle of reducing their entropy in order to ensure the inevitable energy as well as their long-term survival. The contribution is analysing one of the potential applications of the above-indicated approach to the firm in which the measurement of the so-called internal entropy gives the possibility to determine in a very precise way whether the new managerial approach can be or cannot be implemented in the firm in the current state or whether it is possible to define the strategies for cultivation of the firm´s social capital. The paper proceeds from the data acquired during practical applications of the Spiral management in the environment of the Czech and Slovak companies. Key words: entropy, social subsystem of the firm, technical subsystem of the firm, the Spiral management.
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Hillion, Pierre, and Theo Vermaelen. "Death spiral convertibles." Journal of Financial Economics 71, no. 2 (2004): 381–415. http://dx.doi.org/10.1016/s0304-405x(03)00209-5.
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Andreasik, Jan. "Knowledge Management Models. State of the Art." Barometr Regionalny. Analizy i Prognozy 16, no. 4 (2019): 131–40. http://dx.doi.org/10.56583/br.54.
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In this article knowledge management models are classified into the following groups: 1. Resource models. 1.1. Holistic models. 1.2. Pyramidal models. 2.Process models. 2.1. Knowledge value chain models. 2.2. Branch models of organizational processes. 2.3. Spiral models. 3. Knowledge creation models. 4. Semantic models. As the summary the operationalization of knowledge management models is presented.
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Cooper, William L., Tito Homem-de-Mello, and Anton J. Kleywegt. "Models of the Spiral-Down Effect in Revenue Management." Operations Research 54, no. 5 (2006): 968–87. http://dx.doi.org/10.1287/opre.1060.0304.
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Bezrukov, Valery I., and Elena V. Lukashina. "Spiral model of procedural cycle of educational process management." SHS Web of Conferences 29 (2016): 01009. http://dx.doi.org/10.1051/shsconf/20162901009.
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Giddins, G. E. B. "The non-operative management of hand fractures." Journal of Hand Surgery (European Volume) 40, no. 1 (2014): 33–41. http://dx.doi.org/10.1177/1753193414548170.
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Most hand fractures can be treated non-operatively. Some hand fractures, such as open injuries or markedly displaced intra-articular fractures, are almost always treated operatively. The treatment of many fractures, such as proximal interphalangeal joint fracture subluxations or spiral phalangeal fractures, is unclear. The aim of this review is to establish those injuries where the outcome of non-operative treatment is unlikely to be improved with surgery. This may help to prevent unnecessary surgery, concentrate work on finding the sub-groups that may benefit from surgery and to establish which injuries do so well with non-operative treatment that the only valuable clinical research in future will be large cohort studies of non-operative treatment or randomized controlled trials comparing operative and non-operative treatments. The relevant fractures are spiral metacarpal fractures, transverse metacarpal shaft and neck (boxer’s) fractures, base of proximal phalanx avulsion fractures, thumb metacarpophalangeal joint ulnar and radial collateral ligament injuries and bony mallet injuries. For the majority of these injuries, current knowledge suggests that the outcome of non-operative treatment cannot reliably be improved upon with surgery. Level of evidence IV
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Bulgakov, Volodymyr, Simone Pascuzzi, Semjons Ivanovs, Zinoviy Ruzhylo, Ivan Fedosiy, and Francesco Santoro. "A New Spiral Potato Cleaner to Enhance the Removal of Impurities and Soil Clods in Potato Harvesting." Sustainability 12, no. 23 (2020): 9788. http://dx.doi.org/10.3390/su12239788.
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Sustainability in the agricultural field suggests the conservation and maintenance of a natural environment of soil. Nevertheless, in the potato production chain, the mechanized harvest is carried out with the concurring removal of impurities and fertile soil. The authors have developed a new spiral potato cleaner which is able to capture and efficiently remove soil lumps of various sizes and shapes, as well as various plant residues. Theoretical and experimental studies have been performed on this soil clod cleaner to determine the structural and kinematic parameters that provide efficient capturing, motion and sifting down of the soil, through the gaps between the helices of its cleaning spirals. An analytical description of the motion of the clod of soil has been made and a system of differential equations has been compiled, whose numerical solution made it possible to determine the indicated reasonable operative parameters of the developed spiral potato cleaner. The results of the experimental research confirmed those ones obtained through the numerical solution of the mathematical model, i.e., rational angular speed ω of the rotation of the spirals from 20.0 to 30.0 rad s−1 and the radius R of spirals between 0.12 and 0.15 m.
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Ivanova, S., A. Romin, L. Gaynutdinova, S. Kvitka, V. Paliukh, and I. W. E. Arsawan. "Spiral dynamics in the management of sustainable development of society." IOP Conference Series: Earth and Environmental Science 915, no. 1 (2021): 012039. http://dx.doi.org/10.1088/1755-1315/915/1/012039.
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Abstract The article discusses issues related to the implementation of the concept of sustainable development through the prism of the spiral dynamics approach. An example of sustainable models for the implementation of activities in the forestry area and considered inconsistencies in conceptual attitudes necessary to implement such an approach and in the vMems of today. The purpose of this study is consideration of the applied aspects management on the value-based change. As part of the study, an information and management scheme for the forestry industry has been developed, which allows you to see information in the process relationships. General recommendations for the management of values have been developed on a specific example of the forestry industry. Modern society requires specialists of a new formation, able to integrate spiral movements, ready to design new businesses and projects, taking into account the requirements of the 2nd level vMems.
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Lawler III, Edward E. "Creating a virtuous spiral organization." Global Business and Organizational Excellence 26, no. 2 (2007): 47–52. http://dx.doi.org/10.1002/joe.20137.
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Watanabe, Ryo, Kohki Nishide, Hiroyasu Suganuma, Priyanka Verma, Hiroshi Akama, and Choji Fukuhara. "e-Methanation with a spiral catalyst: optimized thermal management and long-term stability." RSC Advances 15, no. 10 (2025): 7365–70. https://doi.org/10.1039/d4ra08236b.
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Sydorova, Elena, Sándor Halász, Galina Zelenkova, Alexander Pakhomov, and Antonina Pahomova. "Management tools in the context of NBIC convergence." E3S Web of Conferences 273 (2021): 08017. http://dx.doi.org/10.1051/e3sconf/202127308017.
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In view of the potential global human factors threats, NBIC convergence in manufacturing systems requires new, sustainable approaches to HR management. The proposed methodology is based on the systems paradigm of Janos Kornai, which is used in the framework of BigData technologies, artificial intelligence, and blockchain. The problem of control, optimization and evolution of the human factor in NBIC-production cyber-physical systems is solved by means of the developed human-oriented concept of HR-resources management, the development of which occurs in a spiral, involving exit from the system to form new meanings and concepts. Each turn of the spiral is a self-organizing system. For the current stage of development, a cyber-physical system of interaction “Man” - “Machine” is proposed, based on global and double iterative connections, parallel analysis, scenario forecasting, machine learning, cognitive component and collective decision making. The developed human-oriented concept of HR-resources management allows you to control, optimize and develop human production activities, ensure iterative self-development and self-improvement of the system, guarantee the stability and safety of the system, maximize the percentage of return on human resources and reduce the level of opportunistic human behavior.
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Giri, Dipti Ramesh, Ekta Singh, and Shanta Satyanarayan. "Comparative study on toxicity evaluation of anaerobically treated parboiled rice manufacturing wastewater through fish bioassay." Water Science and Technology 73, no. 8 (2016): 1825–31. http://dx.doi.org/10.2166/wst.2016.029.
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Short term aquatic bioassay has been developed into a useful tool in water quality management. These tests give information on comparative toxicity of several compounds. The objective of this study was to evaluate the acute toxicity of raw and anaerobically treated effluents of the parboiled rice manufacturing industry. The acute toxicity test was carried out by using the fish Lebistes reticulatus under laboratory conditions. LC50 values for 24, 48, 72 and 96 hours ranged between 4.6 and 7.0% for the raw parboiled rice manufacturing wastewater. Two anaerobic fixed film fixed bed reactors and two different media matrices, i.e. UV stabilized Biopac media and Fugino spirals, were used for the treatment of parboiled rice mill wastewater. Effluents from these two reactors depicted LC50 values in the range of 68–88% and 62–78% for Biopac and Fugino spiral packed reactors, respectively. From the results, it is evident that anaerobically treated effluents from Biopac packed reactor is marginally better than Fugino spiral packed reactor. Results subjected to statistical evaluation depicted regression coefficient of more than 0.9 indicating good correlation between the mortality and effluent concentration.
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Broeders, Ivo A. M. J., Jan D. Blankensteijn, Marco Olree, Willem Mali, and Bert C. Eikelboom. "Preoperative Sizing of Grafts for Transfemoral Endovascular Aneurysm Management: A Prospective Comparative Study of Spiral CT Angiography, Arteriography, and Conventional CT Imaging." Journal of Endovascular Therapy 4, no. 3 (1997): 252–61. http://dx.doi.org/10.1177/152660289700400304.
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Purpose: To define the impact of spiral computed tomographic angiography (CTA) with image reconstruction on graft selection for Transfemoral Endovascular Aneurysm Management (TEAM) by comparing it to conventional computed tomography (CT) and contrast arteriography. Methods: Twenty-one candidates for TEAM were included. The diameters of the superior and inferior aneurysm necks and lengths between the graft attachment sites were measured using the three imaging techniques. These measurements and their consequences on graft selection were studied. Results: The difference in length sizing between spiral CTA and arteriography never exceeded 1 cm; however, lengths measured by conventional CT scanning resulted in underestimation of graft length in 91% of patients. Graft diameters were chosen too small in 62% of the patients when based on arteriographic diameter measurements. A graft of similar diameter was selected by spiral CTA and conventional CT scanning in 81% of the patients, while minor oversizing by conventional CT scanning was found in 14%. Conclusions: Neither conventional CT scanning nor arteriography is adequate as a sole preoperative radiological investigation for TEAM graft sizing. Spiral CTA with image processing produces all information required for selection of tho-optimal graft size and should be regarded the method of first choice for this purpose.
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Ermolaeva, Yulia V., and Yulia V. Dzyuba. "Managing sustainable development of companies in Russia based on the concept of spiral dynamics: a case study." Research Result. Sociology and Management 10, no. 2 (2024): 94–116. http://dx.doi.org/10.18413/2408-9338-2024-10-2-0-8.
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As part of this study, we identified two main tasks: to consider existing concepts for managing the sustainable development of companies, especially focusing on those that directly use the spiral dynamics model and, based on practical cases of direct work in companies, to illustrate its capabilities and prospects. In the theoretical part of the study, a literature review was carried out describing the stages of analytics of a company's sustainable development; in the empirical part, a case study with the spiral dynamics methodology was used. The work presents practical cases where it was possible to substantiate the flexibility, scale, and systematic nature of the spiral dynamics methodology of different industry companies. In each case, regardless of the direction of the company’s activity, it was possible to analyze the general trajectory of the company’s development through the prism of the evolution of culture/values/behavior change, analyzes the layers of various cultural layers and management structures in the company, thereby making the transition to a new, more advanced level of management , introduce higher-level values based on the concept of spiral dynamics, increase KPI indicators within the framework of the company's sustainable development policy. Spiral dynamics provides a holistic approach that combines the study of both the classical aspects of sustainable development (economic, environmental and social aspects), and considers the culture of values, evolutionary vector, an integral system of company development with an applied program of change and transition to a new level, which allows the company to achieve harmony and balance between growth and conservation of resources. The study contributes to clarifying the interdisciplinary nature of the concept of spiral dynamics, the prospects for working with a sustainable development agenda for the company.
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Mosteanu, Ofelia, Teodora Atena Pop, Adina Hadade, and Marcel Tantau. "Spiral Enteroscopy Value for the Celiac Disease Diagnosis and Management." International Journal of Celiac Disease 2, no. 1 (2016): 27–30. http://dx.doi.org/10.12691/ijcd-2-1-8.
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Thomas, Keith Trevor, and Sanjoy Bose. "The Human Face to Knowledge Management: Extending the Knowledge Spiral." International Journal of Knowledge, Culture, and Change Management: Annual Review 6, no. 9 (2007): 33–44. http://dx.doi.org/10.18848/1447-9524/cgp/v06i09/49374.
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Panageotou, Steven. "Disciplining Greece: Crisis Management and Its Discontents." Review of Radical Political Economics 49, no. 3 (2017): 358–74. http://dx.doi.org/10.1177/0486613417703971.
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The strategy intended to resolve the Greek financial crisis is not a resolution strategy at all—it is more accurately conceptualized as a crisis management strategy, which is insufficient to reduce the public debt and instead fuels a deflationary spiral. Consequently, power is wielded by unelected, international political and financial institutions and actors, the crisis management regime, who have engendered a wave of discipline, surveillance, and control alongside a neoliberal restructuring of the Greek economy. JEL Classification: G01, E62, P16
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Volodymir, Koulik, and Zenon Zamiar. "Supply chain spiral dynamics." Electronic scientifical and practical journal "Intellectualization of logistics and Supply Chain Management" 1, no. 1 (2020): 7–16. https://doi.org/10.46783/smart-scm/2020-1-1.
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<em>The article is devoted to the research of modern tendencies of defining the essence of supply chain management as an innovative philosophy of spiral business dynamics. The research is based on the generalization and application of the basic principles of wave theory of development, classical theory of marketing, modern provisions of the theory of TQM and conceptual provisions of the theory of spiral dynamics. A new look at supply chain architecture, from identifying growing needs for specific products and ending with utilization, namely the emergence of new links in the chain of transformation of resources such as the stage of intelligent innovation processes to create modifications and upgrades or design a new product to meet growing needs. A multicomponent process of change is considered in view of current trends. The application of the theory of the spiral dynamics of the supply chains is a logical and predictable extrapolation of the general tendencies of the development of the life support system and the growing needs of society, starting from the “subsistence economy” and to the creation of modern global economic associations such as transnational corporations and international transport corridors. economic associations of countries and international programs of scientific search in the field of artificial intelligence and development of the cosmos.</em>
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M, Saranya, Kennedy JS,, Jeyarani S, and Anandham R. "Effect of antibiotic materials on rugose spiralling whitefly, Aleurodicus rugioperculatus Martin (Hemiptera: Aleyrodidae) oviposition." Journal of Applied and Natural Science 14, SI (2022): 161–65. http://dx.doi.org/10.31018/jans.v14isi.3603.
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The rugose spiralling whitefly is an invasive sucking pest on horticultural crops found in India. Elimination of endomicrobial communities harboured in hosts through antibiotic treatments adversely affects the fitness parameters of rugose spiralling whitefly. Keeping this in view, the present study aimed to evaluate the ovicidal action of antibiotics against rugose spiralling whiteflies reared on four host plants. Antibiotics with varied modes of action were erythromycin, ciprofloxacin, carbenicillin and cefotaxime and were applied to coconut, banana, sapota and guava leaves for whitefly oviposition. Antibiotic treatment, carbenicillin 100 μg/mL + ciprofloxazin 5 μg/mL significantly (p<0.05) reduced the oviposition and % egg hatchability of whiteflies reared in coconut (13 eggs/spiral and 61.54%), banana (15 eggs/spiral and 60.00%), sapota (15 eggs/spiral and 66.67%) and guava (16 eggs/spiral and 56.25%). The reduction in the number of eggs per spiral and hatchability percentage proved that antibiotic treatments significantly (P<0.05) reduced rugose spiralling whitefly fecundity. Antibiotic material affects the fitness parameters of whitefly by disrupting the endomicrobial communities associated with whitefly. Antibacterial materials have a potential plant protection role in the management of whiteflies by reducing population growth.
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Mohammed, Eman. "The role of spiral Computerized Tomography in diagnosis of stroke." Iraqi National Journal of Nursing Specialties 26, no. 2 (2013): 123–28. http://dx.doi.org/10.58897/injns.v26i2.178.
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Objective: The aim of this study is to determine the role of spiral Computerized Tomography in the diagnosis anddetection the types of stroke.Methodology: One hundred sixty two patients (162) (99 males and 63 females) their ages ranging from (13 – 80)year, all of them are suffering from stroke. They were collected randomly from spiral Computerized Tomographyunit in Baquba Teaching hospital during the period from November / 2010 to December / 2011 .All the patientswere examined clinically and then done spiral Computerized Tomography examination.Results : The results of this study showed that the stroke effected different age groups and both sex but males ismore affected than the females .The results of spiral Computerized Tomography examination were 97 patient (59.9 % ) have ischemic stroke and 65 patient ( 40.1 % ) have hemorrhage stroke .Recommendation: The study recommended that great focusing to do the examination by spiral computerizedtomography if the patients have no contraindications for during examined with it because it has high accuracyand efficiency in diagnosis of the stroke, also recommended to do an educational programs to improve awarenessof society about the risk factors and early clinical features to help of early diagnosis and management of stroke.
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Madsen, Vibeke Thøis, and Winni Johansen. "A spiral of voice? When employees speak up on internal social media." Journal of Communication Management 23, no. 4 (2019): 331–47. http://dx.doi.org/10.1108/jcom-03-2019-0050.
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Purpose The purpose of this paper is to explore the discursive tactics that employees use when they speak up on internal social media (ISM) to gain support for their cause, and how this can develop into a “spiral of voice” when organizational members interact with each other on ISM. Design/methodology/approach The study is based on screenshots of four months of coworker communication on ISM in a Danish bank and on semi-structured interviews with 24 employees. Findings Employees succeeded in speaking up and gaining support on ISM by using eight different discursive tactics. These tactics helped move organizational issues from an operational to a strategic level, thus making the issues relevant for management as well as gaining the support of other coworkers. The visibility and persistence of communication on ISM forced managers to react. Research limitations/implications Further research should investigate whether similar tactics and reactions occur in organizations with a less open communication culture where it might be less safe for employees to speak up. Practical implications Organizations need to be aware of the dynamics of the “spiral of voice” and of the way in which the visibility and persistence of communication on ISM forces managers to handle organizational issues. Originality/value This study is the first to explore what happens when employees speak up on ISM and to propose the concept of “a spiral of voice” as an extension of the theory of “the spiral of silence” (Noelle-Neumann, 1974).
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Dua, Deepti, and Ankur Dua. "Endodontic Management of a Maxillary Lateral Incisor fused with Supernumerary Tooth using Spiral Computed Tomography as Diagnostic Aid." World Journal of Dentistry 7, no. 4 (2016): 199–202. http://dx.doi.org/10.5005/jp-journals-10015-1396.
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ABSTRACT Fusion is a developmental anomaly in tooth morphology, which may be due to either union of two separate tooth buds or partial splitting of a single tooth bud. A thorough understanding of root canal anatomy is an essential prerequisite for a successful endodontic treatment. This case report describes successful endodontic management of a maxillary left lateral incisor fused with a supernumerary tooth using spiral computed tomography (SCT) as a diagnostic aid. A patient reported with a painless swelling in the maxillary anterior region associated with a fused maxillary lateral incisor. Spiral CT was performed to better understand the complex root canal anatomy. Endodontic treatment was done using methyl trioxide aggregate (MTA) as apical plug and obturation by thermoplasticized gutta-percha. The tooth was completely asymptomatic at 1-year follow-up showing signs of healing. The present case report emphasizes on the importance of three-dimensional (3D) imaging techniques, such as SCT in cases of developmental anomalies having complicated root canal morphology for successful endodontic therapy. How to cite this article Dua D, Dua A, Patil AC. Endodontic Management of a Maxillary Lateral Incisor fused with Supernumerary Tooth using Spiral Computed Tomography as Diagnostic Aid. World J Dent 2016;7(4):199-202.
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Sadikov, Shavkat Axmedovich, Islambek Pazilbekovich Jolimbetov, and Rustam Bazarbayevich Yusupbayev. "EXPERIENCE IN THE USE OF PDE-5 INHIBITORS (SILDENAFIL) IN THE MANAGEMENT OF PREECLAMSIA: CASE REPORT." Journal of reproductive health and uronephrology research 4, no. 4 (2023): 4. https://doi.org/10.5281/zenodo.8329430.
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In a healthy pregnancy, placental development causes fetal cytotrophoblast cells to infiltrate maternal uterine spiral arterioles, changing the vascular endothelium from an epithelial to an endothelial phenotype, leading to greater blood supply with less resistance. In preeclampsia, trophoblastic invasion is impaired, leading to vascular remodeling that fails to provide adequate blood circulation through spiral arterioles, causing hypoxia and placental ischemia. This environment leads to increased oxidative stress and release of inflammatory cytokines, leading to overall systemic maternal endothelial dysfunction. For the reasons mentioned above, the use of PDE inhibitors is recommended as a treatment for preeclampsia. Inhibition of PDE-5 by sildenafil promotes systemic maternal vasodilation and blood pressure reduction. In addition, it prevents hydrolysis of sGMP, increases its intracellular concentration and reduces uteroplacental hypoperfusion, reduces fetal hypoxia, prolongs pregnancy and improves postpartum outcomes.
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Sharf Aldeen, Asame, Ali Abdi Kordani, Afshin Fallah, and Seyed Mohsen Hosseinian. "Safety Comparison of Simple and Spiral Horizontal Curves Based on Side Friction Factor Dynamic Modeling." Journal of Advanced Transportation 2023 (February 10, 2023): 1–23. http://dx.doi.org/10.1155/2023/7954346.
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A horizontal curve’s geometric design is considered an important factor in highway accidents, and simple and spiral curves are regarded as the most common types of horizontal curves. Various factors affect the safety of horizontal curves, one of the most important of which is the side friction factor in the horizontal curves. Therefore, in this study, the safety of simple and spiral horizontal curves was investigated for the E-class sedan, E-class SUV, and two-axle conventional truck based on the side friction factor. In this regard, CarSim and TruckSim vehicle dynamic simulation software were utilized using 360 scenarios, including vehicle speed, vehicle type, curve radius, and road geometry. It was revealed that the maximum side friction factor for all vehicles in the simple horizontal curve was higher than the spiral horizontal curve. Also, the process of increasing the side friction factor was carried out with a gentler slope in the spiral horizontal curve. Except for the radius of 0.7 times the maximum radius of the spiral horizontal curve (R) for the truck and the radii of 0.7 R and 0.9 R for the sedan and SUV, the maximum side friction factor in simple and spiral horizontal curves was lower than the AASHTO recommended values, which shows that the spiral horizontal curve was better and safer compared to the simple horizontal curve based on the side friction factor.
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Crow, William T. "Spiral Nematode Helicotylenchus spp. (Nematoda: Tylenchida: Hoplolaimidae)." EDIS 2017, no. 5 (2017): 4. http://dx.doi.org/10.32473/edis-in973-2017.
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Also published on the Featured Creatures website at http://entnemdept.ufl.edu/creatures/NEMATODE/spiral_nematode.htm
 Includes: Introduction - Distribution - Life Cycle and Biology - Hosts - Symptoms - Identification - Economic Importance - Management - Selected References 
 Original EDIS publication:
 Crow, William. 2013. “Spiral Nematode, Helicotylenchus Pseudorobustus (Steiner, 1941) Golden, 1956 (Nematoda: Tylenchida: Hoplolaimidae)”. EDIS 2013 (1). https://journals.flvc.org/edis/article/view/120478.
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Garalevičius, Romualdas, Romualdas Kliukas та Adolfas R. Garalevičius. "STRENGTH AND DEFORMABILITY ESTIMATION OF CENTRIFUGED CONCRETE/ОЦЕНКА ПРОЧНОСТО И ДЕФОРМАТИВНОСТИ ЦЕНТРИФУГИРОВАННОГО БЕТОНА". JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 2, № 8 (1996): 73–83. http://dx.doi.org/10.3846/13921525.1996.10590175.
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Influence of several factors, namely high strength longitudinal reinforcement, transverse (spiral) reinforcement, precompression level and concrete age, on mechanical properties of centrifuged concrete is investigated. It has been established by tests that longitudinal and transverse (spiral) reinforcement make worse compaction, casting and hardening conditions of centrifuged concrete. But the spiral reinforcement reduces transverse deformations of compressed centrifuged members of ring cross-section and hence increases concrete strength. During the experiments for central compression, centrifuged concrete members of a ring cross-section were investigated. The parameters of these members: diameter 260 and 500 mm, height 400 and 800 mm, web thickness 35…80 mm. The specimens were reinforced by longitudinal bars of 10, 12, 14 mm diameter and 4 or 5 mm cross-section spirals. Coefficient of longitudinal reinforcement μ s , varied from 1,5 to 6%, coefficient of transverse reinforcement μ cir —from 0,25 to 1,25%, lead of spirals—from 40 to 100 mm. During testing the ring concrete compressive strength Rb was 30…60 MPa. The results of the above-mentioned experiments are presented in Tables 1, 2 and 3. It is recommended to evaluate the reinforcement influence on mechanical properties of such concrete in members of real constructions by formulas (5) and (6). Relationships of concrete strength, initial modulus of deformation and intensity of precompression (9) and (10) are discussed in this article. The latest test results on relationship between concrete compression, tension strength and concrete age are presented. It is established, that hydration of cement takes quite a long time and compression and tension strength of centrifuged concrete increases. This increase in strength is given in Table 4. The strength of centrifuged concrete of 14, 120, 240 and 360 days was determined by direct compression and tension of concrete rings (Table 4). After 9,600 days (26 years) due to a limited number of specimens (concrete rings) the compressive strength was determined by testing prisms cut from the rings. The tensile strength was determined indirectly—by cutting these prisms, as it is recommended by a standard [11] according to formula (12). The results of these tests are presented in Tables 5 and 6. Theoretical connection between tensile and compressive strength may be described by Ferret formula (13), which we propose to use in a slightly changed form, i. e. as (14). Comparative calculations showed that the centrifuged concrete strength calculated according formula (14) corresponds to the results of direct testing (Table 7).