Analysis of curing effect of bulk curing barns with different types of biomass combustion equipment
Shengjiang Wu, Qi Xu, Jianyu Gou
et al.
Abstract With the deteriorating global environment, the increasing demand for energy sources, humanity urgently need to explore clean and renewable energy to replace coal fuel resources in the field of tobacco curing. Biomass, a more environment-friendly energy source, is widely used but shows inconsistent results for many types of biomass combustion equipment in China. To provide basis for the clean curing, quality enhancement and curing efficiency improvement of tobacco leaves, the effect of five different types of biomass combustion equipment bulk curing barn (T1, a built-in biomass bulk curing barn with a special hearth for burning through a smoke pipe; T2, an external biomass bulk curing barn with a flame pipe through a smoke pipe; T3, a biomass semi-gasification combustion heating furnace bulk curing barn with a built-in hearth; T4, a type I built-in biomass bulk curing barn with integrated heat supply and heat exchange; T5, a type II built-in biomass bulk curing barn with integrated heat supply and heat exchange) on curing performance, biomass combustion efficiency, pollutant emissions, curing cost, economic characters, chemical composition content, aroma substance content and sensory quality of flue-cured tobacco leaves were compared and analyzed. Our results showed that the curing effect of the T4 and T5 treatments was better, the T2 treatment was worse, while the other treatments were moderate. In our data, the T4 and T5 treatments exhibited good curing temperature -rise performance and stable temperature performance with smaller temperature deviations. In addition, the T4 and T5 treatments resulted in lower curing costs, exhibited better economic characteristics, achieved more favorable coordination of chemical composition, offered superior sensory quality, and had a higher content of aroma substances in the flue-cured tobacco leaves compared to the other treatments. The curing effect of the built-in biomass bulk curing barn with integrated heating and heat exchange is superior, providing an important basis for the current low-carbon clean energy curing practices.
The Sustainability Reporting: Current Performance and Prospects of Implementation
N. V. Ovsiuk, І. І. Afanasieva
The article provides a characterization of the current performance of the sustainability reporting in the Ukrainian business sector and outlines the features specific to its implementation by domestic business entities. Issues of corporate social responsibility, disclosure of information about social investment in the sustainability reporting have been increasingly urgent for Ukraine, which determined the relevance of this study. Present-day realities and existing challenges exacerbate the problems of elaborating organizational and methodological framework for implementation, compilation and submission of the sustainability reporting by domestic enterprises. Issues of normative and legal regulation are ones particularly requiring in-depth studies.
The authors used general and special methods of scientific research: system approach encompassing analysis and synthesis, induction and deduction, expert assessment and sample observations, abstraction and generalization, etc. It was demonstrated that the social accounting and the environmental accounting should be interpreted as the related components extending the boundaries of the sustainability accounting rather than the separate types of accounting. The concept of sustainable development resulted from a combination of social, economic and environmental vectors was examined. The paradigm of social corporate responsibility was outlined as a system of ethical views aimed at compliance with the principles of social justice. The increasing importance of socially responsible business activities, their efficiency and linking to the community needs on the way toward sustainable development were emphasized.
It was argued that the sustainability reporting, once implemented by Ukrainian enterprises, would help enhance the transparence of economic performance indicators and simplify the access to information on the business environment where business entities operate. It would help improve the management scheme, reduce adverse environmental effects and create more transparent terms for investment. The conclusion was made about the importance of a more active role of the state in extending the social activities in the business sector, with emphasizing the need in elaborating public models of social projecting with involving business entities, allowing to replace a situational response with a long-term planning of social transformations.
Synthesis with Guided Environments
Orna Kupferman, Ofer Leshkowitz
In the synthesis problem, we are given a specification, and we automatically generate a system that satisfies the specification in all environments. We introduce and study {\em synthesis with guided environments} (SGE, for short), where the system may harness the knowledge and computational power of the environment during the interaction. The underlying idea in SGE is that in many settings, in particular when the system serves or directs the environment, it is of the environment's interest that the specification is satisfied, and it would follow the guidance of the system. Thus, while the environment is still hostile, in the sense that the system should satisfy the specification no matter how the environment assigns values to the input signals, in SGE the system assigns values to some output signals and guides the environment via {\em programs\/} how to assign values to other output signals. A key issue is that these assignments may depend on input signals that are hidden from the system but are known to the environment, using programs like ``copy the value of the hidden input signal $x$ to the output signal $y$." SGE is thus particularly useful in settings where the system has partial visibility. We solve the problem of SGE, show its superiority with respect to traditional synthesis, and study theoretical aspects of SGE, like the complexity (memory and domain) of programs used by the system, as well as the connection of SGE to synthesis of (possibly distributed) systems with partial visibility.
Physiological characteristics of a high amylase-producing Saccharomycopsis fibuligera
SUN Yafang, ZHANG Jingjie, GUO Tianfen, ZHANG Yan, QIN Xianwu
In order to develop a strain suitable for brewing environments, reducing production input costs, and enhancing the flavor of fermentation products, a high amylase-producing strain AMCC32244 was isolated and screened from old rice wine. This strain was identified through morphological observation and molecular biological method. The environmental tolerance, substrate utilization, enzyme production by solid-state fermentation, ethanol production by raw starch materials fermentation, and aroma of the strain were analyzed. The results showed that the selected strain was identified as Saccharomycopsis fibuligera. It could tolerate the culture conditions of ethanol volume fraction 8%, pH 3, high temperature 40 ℃, and glucose content 60%, and utilize at least 15 types of carbon sources, including xylose, raffinose, and Pullulan. It could produce glycosylase, α-amylase, cellulase, protease, lipase and other enzymes in the gluten fermentation environment, among which the glycosylase activity reached 82 539.14 U/g, α-amylase activity reached 39 904.12 U/g at 70 ℃, and the amylase activity to degrade raw starch reached 4 557.62 U/g. The strain was used for liquid fermentation of raw corn starch and could produce 32 kinds of aroma substances, among which the phenylethanol content could reach 36.34 mg/L. The strain AMCC32244 could grow in a special fermentation environment, had the potential for fermentation of various raw materials, could produce rich enzyme series, which was conducive to improve production efficiency and reduce cost, and had broad prospects in the production of gluten production and starch raw material fermentation products.
Biotechnology, Food processing and manufacture
Analysis of the Aerodynamic Parameters of Road Vehicles Affected by Weather Conditions
Péter Brúnó, István Lakatos
Optimizing the aerodynamic parameters of road vehicles is essential due to their impact on the environment. It is a special aim of developments, including electric and non-electric vehicles. A lot of research is being conducted according to energy efficiency and range. These parts are the most significant directions of development. Aerodynamic parameters such as drag coefficient exert a significant influence on vehicle energy efficiency. The purpose of this paper is to investigate the aerodynamic parameters of the Ahmed body in rainy weather conditions. Different types of rain and vehicle speeds are studied and compared to each other to examine their effect on the drag coefficient. The examination is carried out using the Computational Fluid Dynamics (CFD) method. In the two-phase simulations, the rain is modeled as solid particles. Results can be used to obtain the most fuel- or electricity-efficient rain type-vehicle speed combinations and thereby can help to contribute a more sustainable transport. The results clearly show that rain has a measurable effect on the drag coefficient. As the rain intensity increases, the drag coefficient increases, too. However, there are uncertainties in the upward trend. As airspeed increases, the increasing trend becomes more stable.
Chemical engineering, Computer engineering. Computer hardware
Spatiotemporal distribution of toponymic cultural heritage in Jiangsu Province and its historical and geographical influencing factors
Min Jiao, Lu Lu
Abstract As a typical intangible cultural heritage, Toponymic Cultural Heritage (TCH) is rich in geographic information and semantic and physical connotations. In the context of the heritage conservation era, it is highly important to study the spatiotemporal distribution characteristics of toponymic cultural heritage and explore its historical and geographic influencing factors on the sustainable conservation and development of toponymic cultural heritage. However, most existing studies focus on the toponym cultural landscape, and less attention has been given to TCH. Therefore, on the basis of the data of 357 provincial TCH items in Jiangsu Province, this study investigated the spatiotemporal distribution characteristics and historical–geographical influencing factors of the TCH by using geospatial analysis methods, such as the average nearest neighbor, tyson polygon, kernel density estimation, standard deviational ellipse, and superposition coupling analysis, and proposed several strategies for adaptive reuse of TCH. The results show that (1) the TCHs of Jiangsu Province have a spatial distribution characteristic of "sparse in the north, scattered in the middle and dense in the south" and form a high-density agglomeration around the southern part of Jiangsu Province. In the distribution of cultural districts, the Jinling cultural district, the Wu cultural district, and the Huaiyang cultural district have the largest number of TCHs. (2) From the Pre-Qin period to the Ming and Qing Dynasties, TCHs, such as Nanjing, Yangzhou, Zhenjiang, Changzhou, and Suzhou, tended to merge in the southern part of Jiangsu. (3) In terms of type, the roads, streets and alleys of TCHs are the richest, and all types of TCHs are spatially clustered in the southern part of Jiangsu Province, which has a high level of urbanization, industrialization, and a superior geographic environment. (4) TCHs have spatial tendencies toward low altitudes and hydrophilicity, and relatively favorable natural geographical conditions provide a high-quality environment for TCHs in southern Jiangsu Province. Influenced by historical, humanistic, and geographical factors, TCH is unevenly developed spatially. As a historical population concentration area, an important political, economic, and cultural core area, and a center of gravity for cultural development, more TCH resources have survived in the southern part of Jiangsu Province. This study provides a new perspective for interpreting and recognizing TCH as a special intangible cultural heritage and can provide a reference for the sustainable conservation and development of TCH.
Fine Arts, Analytical chemistry
Program Environment Fuzzing
Ruijie Meng, Gregory J. Duck, Abhik Roychoudhury
Computer programs are not executed in isolation, but rather interact with the execution environment which drives the program behaviors. Software validation methods thus need to capture the effect of possibly complex environmental interactions. Program environments may come from files, databases, configurations, network sockets, human-user interactions, and more. Conventional approaches for environment capture in symbolic execution and model checking employ environment modeling, which involves manual effort. In this paper, we take a different approach based on an extension of greybox fuzzing. Given a program, we first record all observed environmental interactions at the kernel/user-mode boundary in the form of system calls. Next, we replay the program under the original recorded interactions, but this time with selective mutations applied, in order to get the effect of different program environments -- all without environment modeling. Via repeated (feedback-driven) mutations over a fuzzing campaign, we can search for program environments that induce crashing behaviors. Our EnvFuzz tool found 33 previously unknown bugs in well-known real-world protocol implementations and GUI applications. Many of these are security vulnerabilities and 16 CVEs were assigned.
Social networks in non-profit organizations
Ivana Vidak, Dejan Tubić, Martina Kovačević
The purpose of this paper is to define the communication, communication process, the concept of social networks and non-profit organizations, with special emphasis on how non-profit organizations use social networks for their work. Social networks are a form of everyday private or business communication. There are different types of social networks, and some of the most popular are: Facebook, WhatsApp, Messenger, Instagram, YouTube, TikTok. The goal of public relations is to provide the organization with an environment in which it will function best and where it will have the opportunity to build its reputation. In the second part of the paper, research methodology is to give through a comparative analysis of the use of social networks as a communication tool in the interpersonal communication of non-profit organizations with users. A descriptive analysis was conducted between ten non-profit organizations in the Republic of Croatia. Conducted analysis has shown that non-profit organizations use social networks in their daily work, for communication, but also for transparency of their work. In further research it would be advisable to detect who are stakeholders in such communication process and what is their opinion or suggestions for non-profit organization.
REE Speciation in Fluoride-Carbonate-Chloride Cooling Hydrothermal Fluids in the Presence of Barite and Celestine (Thermodynamic Modeling)
Shironosova Galina, Prokopyev Ilya
A thermodynamic study was carried out in order to determine the forms of transport for the entire series of lanthanides and their ratio with changing parameters of a hydrothermal fluid of moderate concentrations of chloride, carbonate and fluoride components. Hydrothermal solution, cooling from 500 to 100 ∘C, affected barite and celestine, which are used as a source of sulfate sulfur, monazite as a source of rare earth elements (REE) and phosphorus, and calcite as a source of calcium. It has been established that, under weakly acidic (pH about 4.1) conditions, the equilibrium mineral association is represented by rare earth fluorite, monazite, rare earth fluorapatite, and strontiobarite. In the high-temperature region for light and medium REE, the leading is the first chlorocomplex LnCl+2. For heavy REE, the second fluorine complex LnF+2 takes the first place, except for terbium and dysprosium, for which a sharp predominance of the sulfate complex is revealed. A special picture is observed at 100 ∘C: the leading position is occupied by Ln+3 for both light and heavy REE. In the case of a near neutral weakly alkaline fluid (pH about 7.1), the equilibrium mineral association is represented by calcite, monazite, REE-fluorite, REE-fluorapatite, strontiobarite, and strontianite. The appearance of the latter in natural associations may serve as an indication of the increased alkalinity of the ore-forming environment. In an equilibrium weakly alkaline fluid up to 200 ∘C, hydroxocomplexes are prevalent for all REEs with the ratio Ln(OH)03> Ln(OH)+2. The first chloro complex for light REE at 500–400 ∘C, and the second fluoro complex for medium and heavy REEs follow them. At 100 ∘C, the concentration of hydroxocomplexes sharply decreases, and fluorine and carbonate complexes come to the fore. In general, there is an increased stability of the first chlorocomplex in the high-temperature region, and with decreasing temperature, the role of REE fluorocomplexes increases. Two variants of acidity-alkalinity calculations presumably correspond to modeling of two types of fluids: greisenizing – weakly acidic and carbonatite-forming – weakly alkaline.
Dephasing Dynamics in a Non-Equilibrium Fluctuating Environment
Xiangjia Meng, Yaxin Sun, Qinglong Wang
et al.
We performed a theoretical study of the dephasing dynamics of a quantum two-state system under the influences of a non-equilibrium fluctuating environment. The effect of the environmental non-equilibrium fluctuations on the quantum system is described by a generalized random telegraph noise (RTN) process, of which the statistical properties are both non-stationary and non-Markovian. Due to the time-homogeneous property in the master equations for the multi-time probability distribution, the decoherence factor induced by the generalized RTN with a modulatable-type memory kernel can be exactly derived by means of a closed fourth-order differential equation with respect to time. In some special limit cases, the decoherence factor recovers to the expression of the previous ones. We analyzed in detail the environmental effect of memory modulation in the dynamical dephasing in four types of dynamics regimes. The results showed that the dynamical dephasing of the quantum system and the conversion between the Markovian and non-Markovian characters in the dephasing dynamics under the influence of the generalized RTN can be effectively modulated via the environmental memory kernel.
Customer demand management in the optimal assignment of tasks to work stations according to priority orders
fahimeh tanhaie
The mix model assembly line has attracted the attention of many industrial manufacturers due to its special features and the ability to adapt to market changes. This article has discussed and investigated a new approach in relation with customers, the results of which indicate the proper management of demand. The proposed model pays more attention to priority customers, and a parallel production line is defined that is faster than the main line and has workers with special skills. According to the rapid process of environmental changes, one of the things that can be considered to increase flexibility in the make to order environment is to set the conditions for rebalancing the line. In this article, the rebalancing of the line is also considered and included in the modeling, and the minimization of its costs is considered as another goal. Therefore, in this article, a multi-objective line balancing problem is proposed by examining rebalancing and vertical balancing problems. Benders decomposition algorithm is used to solve this problem. The results show that exact methods do not have the ability to solve large-sized problems in a reasonable time, but the solution time for Bander's decomposition method, considering the size of the problem, shows the appropriate efficiency of this algorithmIntroductionMix model assembly lines, known for their ability to adapt to changing market demands with minimal adjustments, are currently employed in active industries worldwide. The findings of this article also hold potential for reducing assembly line waste in the country's manufacturing sector. Drawing from the principles of lean production and the theories of Scholl and Becker, achieving an optimal production line balance can lead to the reduction of at least five out of the ten types of waste. While the topic of line balancing is crucial in itself, this research sheds light on a significant aspect often overlooked in most studies on planning mixed model assembly lines: the order-based environment. Many previous studies have focused solely on the 'make-to-order' environment and its assumptions, often neglecting balance issues. Given the paramount importance of customer roles in industries, it is imperative to introduce a framework for managing customer orders within line balancing problem models. The aim of this article is to enhance cost management and productivity in mixed assembly lines across various industries, ensuring that demands are met and assembly process constraints are addressed. To achieve this, we first develop the necessary mathematical models for each component and subsequently devise algorithms for their solutions.Materials and MethodsAn express line is defined in parallel and faster than the main line, as well as having workers with special skills. Considering the rapid process of environmental changes, another thing that can be considered to increase flexibility in the base order environment is to create conditions for rebalancing the line so that both the workload and the cost can be balanced at the same time. This reduced the reassignment of duties. From this point of view, in the proposed model in this part, rebalancing of the line is also desired and it is included in the modeling, and the minimization of its costs is considered as another goal of this model. Also, the goal of balancing the assembly line, which is to distribute the total workload between the stations as smoothly as possible, is also included in the proposed model of this part, which is also called vertical balance, so that each station has a balanced amount of work. Be in a work shift. Therefore, in this model, a multi-objective problem of determining the balance is designed by examining the problems of rebalancing and vertical balance. The orders coming into the organization are prioritized first, because in the order-based production environment, the delivery time of orders is very important, especially for high-priority orders, because customers expect an appropriate response in a short period of time. This prioritization can be done by any method, the output of which determines regular customers and priority customers. After determining the priority of the orders and paying attention to the main line and the designated vanguard, priority orders can be entered into the Parallel line, which operates faster and has multi-purpose operators.Discussion and ResultsIn order to validate the model and ensure the correct performance of the combined benders algorithm with the LP metric method, first the mathematical model in a small size is solved and a comparison between the results and the proposed algorithm is done. Finally we used the proposed algorithm in the large size that the gams software is not able to determine the answer. The L-P metric method obtains the optimal solution in small sizes, but in large sizes, when we give 3600 to 10800 seconds to the solver, it cannot obtain the optimal solution and requires another method to solve. The results of the comparisons show that the LP-metric method does not have the ability to solve large-sized problems in a reasonable time, but the solution time for the benders decomposition method, considering the size of the problem and the obtained answers, shows the appropriate efficiency of this algorithm.ConclusionsFlexibility in the production lines is very important and it should be able to respond to the demand when customer orders change. Therefore, the definition of a mix model line provides flexibility in responding to customer demand and reducing the delivery time for priority orders. When we are faced with a large volume of orders, it can be useful to do things in parallel line. This issue, which is rarely seen in research, is presented in the balance model of this article in the form of two parallel lines. This issue is especially effective in industries such as automobile manufacturing.
Industrial engineering. Management engineering
Digital Technologies and their Impact on the Social and Psychological Characteristics of Adolecsents
V.G. Kamenskaya, L.V. Tomanov
The article is devoted to the problem of increasing the adolescents’ involvement in virtual cyberspace and the influence of activities in it on their social and psychological characteristics, as well as on the features of the critical brain systems functioning. Close and highest values of use by teenagers the frequency as a means of leisure video games and communication in social networks are considered. At the same time, the increase in the number of users with new technologies, according to modern scientific literature, outpaces the accumulation of knowledge about the influence of the information environment on the human psyche and brain, which are forming and developing in new conditions. There are evidence, provided the high values of the use two main types of digital technologies: virtual communications in social networks and video games, which can be associated with the methodical features of surveys and questionnaires and do not reflect the selectivity of adolescent behavior in cyberspace. Scientific sources suggest that a certain proportion of researchers are positive and optimistic about the use of video games in education and leisure, emphasizing their evolving effects on visual memory, spatial orientation and the ability to make correct decisions in uncertain or complex situations. At the same time, there is little evidence of significant changes in verbal-conceptual intelligence. The structure of intellectual functions changes with an emphasis on non-verbal intelligence clearly demonstrate the directional impact of computer games on the highest mental functions, the degree transformation of which depends on the game practice and content of games. The noted negative effects of adolescent gaming activity on the emotional and social characteristics of gamers’ behavior can be associated not only with the gaming time so perhaps with the premorbid features of adolescents, such as depressive experiences. Most researchers on the impact of over-the-counter social media on the psychological and social characteristics of adolescents express similar views, characterizing fans of virtual communication as aggressive, hostile personalities, with superficial assessments and reduced criticism of information in blogs and accounts. This set of properties of users by social networks creates a basis for their involvement in various anti-social actions in cyberspace and real public life. In connection with these facts, it is necessary and possible to research the role of social networks’ commercialization as the causes of the emergence of underage millionaires, bloggers, whose example and success educates much more effectively than school and family. Clinical study over the fascination with video games and virtual life in social networks are in DSM-V in the form of a special form of technology dependences, internet- addiction. Internet abuses based of the specifics of the activity of neural networks, regulating higher mental functions and behaviors. There is the risk of organic lesions of the central nervous system of modern adolescents and social disability of the younger generation. At present, it is not clear the cause-and-effect relationship of premorbid features of abuser and the rate of addiction formation, which certainly requires further research of adolescents, whose leisure time is increase to many hours of action on the Internet and gadgets. The facts mentioned in the article emphasize the relevance and importance of studying psychophysiological and physiological mechanisms, which are most sensitive to the influence of information factors of the environment. It is necessary to formulate a general practical task of preventing excessive fascination with the Internet and gaming by teenagers, the formation of digital diagnostic methods of assessments of brain and mental functioning, as well as corrective psychological and educational activities and programs.
Dephasing and Decorrelation of Spins in a Disordered Environment
Shreyas Raman, Subroto Mukerjee
Dephasing of spins is a major roadblock to scaling up the size of quantum computing systems. We explore the possibility of utilizing highly disordered environments which are in the Many-Body Localized phase to arrest this dephasing. We embedded 2 `special' spins in such a highly disordered environment of Heisenberg spins to act as the target qubits and use the long-time value of the spin-spin correlator $\langle \vecσ_i \cdot \vecσ_j\rangle$ as an order parameter to quantify the transition between the thermal and MBL phases of this system. It is seen that the dephasing between spins, as encoded in this correlator, is impeded in a disordered environment when the system is fully localized. The order parameter yields a critical exponent, to characterize the transition between the thermal and MBL phases, that appears to be robust to changes in microscopic parameters of the system or the choice of pair of spins.
Information Technologies in the Space of Educational Practices
Stryhul Maryna, Khomeriki Olena, Khomeriki Marianna
et al.
The article solves a scientific problem, the essence of which is the contradiction between the need to clarify the peculiarities of implementation of information and communication technologies in institutions of higher education of the technical profile and a certain deficit of special studies that would allow to meet this need. The situation is formulated in accordance with which in the sphere of social and cultural relations the preconditions for the use of Internet technologies are formed, but the managerial and directly educational levels of activity for the university are more promising «conservative» position, aimed at the phased and integration of these technologies in parallel processes of modernization higher education associated with the preservation of the quality of education, financial success of universities, etc. The modification of the network structure of education takes on special significance in connection with the emergence of new forms of social communication, including the innovative network learning, which becomes a social and communicative alternative to traditional education. Today, interpersonal communication, which is the sphere of the connection of new types and forms of communication without human being in the real environment, is determined precisely by the information culture of a person, which explains the human desire to learn in the new world on the basis of the use of information and computer technologies.
Human Machine Interaction (HMI) in Offshore Drilling - oil rig workers’ opinion about their interaction with machines
AH Siddique, T Shamsi, M Hasan
Introduction: There are huge numbers of drilling platforms in the world and once the worker on those platforms meet with an accident, the situation could be very serious. The consequence of this could be environmental, economic and in some cases fatal. Middle East, being one of the oil rich regions hence some of the largest operator works here. Companies here own various types of jack up rigs ranging from old generation rigs to the latest cyber-rig. This paper addresses what oil rig workers have to say about their interaction with machines, and how Human Machine Interaction (HMI) in Offshore Drilling can be improved with design.
Method: A case study approach was undertaken The analysis in this paper draws on the interviews conducted with two different employees involved in operating the drilling operations conducted in the driller’s cabin of newly designed offshore rigs. A semi-structured approach was adopted, using themes identified through analysis of the preceding. The interviews were transcribed by the research team. Each interview was analyzed thematically with existing system and reported discrepancy
Results: The study on Human Machine Interaction (HMI) and Human Factor regarding this has been conducted in the latest generation cyber rigs. There are many aspects of HMI and ergonomics but in this study a special concentration has been given to deal with the ergonomic standpoint and evaluates the drillers console controls.
Conclusions: When comparison is done with the existing machinery, few modifications can be thought of for better human machine interaction. A better human machine interaction system will ensure a more productive environment for the oil-rig workers.
Public aspects of medicine
['3D MODELING AND PRODUCTION SCHEDULING OF KHEWRA SALT MINES']
Azghar Iqbal
Special types of environment, Environmental sciences
Special values of $L$-functions on regular arithmetic schemes of dimension $1$
Adrien Morin
We construct a well-behaved Weil-étale complex for a large class of $\mathbb{Z}$-constructible sheaves on a regular irreducible scheme $U$ of finite type over $\mathbb{Z}$ and of dimension $1$. We then give a formula for the special value at $s=0$ of the $L$-function associated to any $\mathbb{Z}$-constructible sheaf on $U$ in terms of Euler characteristics of Weil-étale cohomology; for smooth proper curves, we obtain the formula of arXiv:2009.14504. We deduce a special value formula for Artin $L$-functions twisted by a singular irreducible scheme $X$ of finite type over $\mathbb{Z}$ and of dimension $1$. This generalizes and improves all results in arXiv:1611.01720; as a special case, we obtain a special value formula for the arithmetic zeta function of $X$.
Imitator homomorphisms for special cube complexes
Sam Shepherd
Central to the theory of special cube complexes is Haglund and Wise's construction of the canonical completion and retraction, which enables one to build finite covers of special cube complexes in a highly controlled manner. In this paper we give a new interpretation of this construction using what we call imitator homomorphisms. This provides fresh insight into the construction and enables us to prove various new results about finite covers of special cube complexes -- most of which generalise existing theorems of Haglund--Wise to the non-hyperbolic setting. In particular, we prove a convex version of omnipotence for virtually special cubulated groups.
PROFILE AND MANAGEMENT OF CENTRAL NERVOUS SYSTEM MALFORMATIONS IN A TERTIARY HOSPITAL
Babagana U, Baba A, Wabada S
et al.
Background: Central Nervous System (CNS) malformations rank among the commonest
malformations. These may be identified in utero or noticed immediately after birth. Most studies
showed Myelomeningocoele, a Neural Tube Defect (NTD) to be the commonest. Severe defects
have a significant impact on long term disability. While some are preventable, most are surgically
managed. Objective: To study the profile and management of CNS malformation in a tertiary
hospital. Method: We undertook a 3-year retrospective study of the profile and surgical
management, including the postoperative complications among Neonates admitted into the
Special Care Baby Unit (SCBU). Data on place of delivery, Gender, Gestational age, Mode of
delivery, Prenatal Diagnosis (Ultrasound Scan), types of malformations, types of surgeries, and
postoperative complications were retrieved. Result: We found 71 patients with CNS anomalies
(31.8% of all congenital anomalies), in delivery 10 (14.1%), out delivery 46(64.8%). Male=43,
females=28. Term gestation 66 (93%), preterm 3(4.2%), post-term 2(2.8%). Delivered by Vagina
(SVD) in 65(91.6%), Caesarean section 4(5.6%), and undocumented in 4(5.6%). Prenatal diagnosis
in only 3(4.2%). Myelomeningocoele was 35(49.3%), meningocoele was 9(12.7%), Hydrocephalus
was 18(25.3%), anencephaly was 1(1.4%), occipital Encephalocoele was 6(8.5%), Sincipital
Encephalocoele was 2(2.8%). Operated on 53(75%), LAMA/lost to follow was 13(18%),
preoperative death was 5(7%). Excision and closure of Neural Tube Defect were 34(64.2%), VP
Shunt was 13(24.5%), Excision and closure of occipital Encephalocoele were 5(9.4%) craniofacial
excision and repair of Sincipital Encephalocoele was 1(1.9%). CSF leak in 4(28.6%), wound
infection in 3(21.4%), shunt infection and obstruction in 2(14.3%) each. meningitis, hypertrophied
scar, and pseudo meningocoele in 1(7.1%) each. Conclusion: The commonest CNS anomaly is
Myelomeningocoele a preventable condition, Sincipital Encephalocoele is not common in our
environment. Concomitant treatment of hydrocephalus averts post excision CSF Leak.
Medicine (General), Dentistry
Makna dan fungsi tuturan register dalam games online “mobile legend” serta pengaruhnya bagi gamers
Elen Inderasari, Kalpika Cahya Buana, Riza Mar’atus Sholikhaha
Mobile Legend is a type of online games that uses communication between players. The purpose of this study was to determine the form, meaning and function of register speech that gamers made when playing Mobile Legend games, and to determine the positive and negative impacts for gamers. This type of research is descriptive qualitative, which describes the data obtained. This research data is the form of speech used by gamers in Mobile Legend. Data obtained from listening, taking notes, and documentation. Data analysis in this research was done by collecting data, reducing data, classifying data, presenting data, and concluding data. Based on the results obtained that there are various types of register speeches, each of which contains a special meaning that has been agreed upon and understood by both parties between Games Mobile Legend players so that communication is effective. The speech function delivered is nothing but to establish communication so that the match runs smoothly. Based on its function, it can be classified based on its speech function, which is divided into 7 categories, namely speech that serves to warn the team because it is being attacked, invite to play Mobile Legend games, order the team to attack or retreat, praise the team or other players, criticize other teams or players , declare the team's victory, and declare the team's defeat. The good and bad effects of this game on players in terms of language, action, thinking, and social to the surrounding environment.
Education (General), Language and Literature