Stop Production Research Articles

Does SUSY have friends? A new approach for LHC event analysis

We present a novel technique for the analysis of proton-proton collision events from the ATLAS and CMS experiments at the Large Hadron Collider. For a given final state and choice of kinematic variables, we build a graph network in which the individual events appear as weighted nodes, with edges between events defined by their distance in kinematic space. We then show that it is possible to calculate local metrics of the network that serve as event-by-event variables for separating signal and background processes, and we evaluate these for a number of different networks that are derived from different distance metrics. Using a supersymmetric electroweakino and stop production as examples, we construct prototype analyses that take account of the fact that the number of simulated Monte Carlo events used in an LHC analysis may differ from the number of events expected in the LHC dataset, allowing an accurate background estimate for a particle search at the LHC to be derived. For the electroweakino example, we show that the use of network variables outperforms both cut-and-count analyses that use the original variables and a boosted decision tree trained on the original variables. The stop example, deliberately chosen to be difficult to exclude due its kinematic similarity with the top background, demonstrates that network variables are not automatically sensitive to BSM physics. Nevertheless, we identify local network metrics that show promise if their robustness under certain assumptions of node-weighted networks can be confirmed.

COVID-19 and small enterprises in the food supply chain: Early impacts and implications for longer-term food system resilience in low- and middle-income countries.

Food and nutrition security play an essential role in weathering and overcoming the COVID-19 pandemic-and in achieving sustainable development. In most low- and middle-income countries, micro, small, and medium-sized enterprises (MSMEs) play an essential role in food supply chains and thus in ensuring food and nutrition security. However, limited attention has been paid to how these critical food system actors are being impacted by the pandemic and associated measures. This paper helps fill that gap through analysis of data from 367 agri-food MSMEs in 17 countries, collected in May 2020 and capturing early impacts of the pandemic on their operations. About 94.3% of respondents reported that their firm's operations had been impacted by the pandemic, primarily through decreased sales as well as lower access to inputs and financing amid limited financial reserves. Difficulty with staffing was also widely cited. Eighty-four percent of firms reported changing their production volume as a result of the pandemic; of these, about 13% reported stopping production and about 82% reported decreasing production. Approximately 54% had changed product prices as a result of the pandemic. The probability of being severely impacted was significantly higher for firms with <50,000 USD in annual turnover; a larger decrease in consumer mobility for grocery/pharmacy shopping also increased the probability of a severe impact. Surprisingly, the youngest firms and those with the fewest employees (controlling for turnover) were less likely to be severely impacted. Over 80% of firms had taken actions to mitigate the pandemic's impact on their operations and/or staff, and about 44% were considering exploring new business areas, with some seeing opportunities for growth. We conclude by discussing implications for policy responses to address immediate challenges as well as increase long-term food system resilience to support further progress towards sustainable development.

Mono-top signature from stop decay at the HE-LHC

Searching for the top squark (stop) is a key task to test the naturalness of SUSY. Different from stop pair production, single stop production relies on its electroweak properties and can provide some unique signatures. Following the single production process , the top quark has two decay channels: leptonic channel and hadronic channel. In this paper, we probe the observability of these two channels in a simplified minimal supersymmetric standard model scenario. We find that, at the 27 TeV LHC with the integrated luminosity of , and μ < 750 GeV can be excluded at 2σ through the leptonic mono-top channel, while and μ < 350 GeV can be excluded at 2σ through the hadronic channel.

Experimental evaluation of free chlorine adsorption from circulating water in cooling towers by activated carbon in a fixed bed column

One of the most important absorbents used in the water and sewage industry and oil and gas industry is the activated carbon, which can be used to remove free chlorine from water and wastewater. If the important parameters of the process affecting the adsorption efficiency are not recognized and controlled, it can cause irreparable damage to downstream equipment and the environment. In the cooling towers system, excessive amounts of chlorine are often injected into the system, which can cause severe corrosion of the equipment and stop production. In this study, the removal of free chlorine from the circulating water of the cooling tower was examined by adsorption and in order to evaluate the effect of pH and water flow containing free chlorine and concentration in the inlet water, experiments were performed on a pilot scale. The adsorbent used in this research was PICA's Industrial Carbon Active. For this purpose, a tower with a fixed bed was first designed and built. The tower used 4,500 grams of activated carbon as an adsorbent. Experimental results showed that by passing 51549 liters of chlorinated water with free chlorine (at different concentrations and pH), 4058 g of chlorine was absorbed by activated carbon. Experimental results also showed that the lower the pH of the solution and the higher the flow rate of the solution, the higher the amount of chlorine adsorption by activated carbon. Also in this study, kinetic reaction of chlorine adsorption by activated carbon was investigated with Thomas, Adams – Bohart, and Yoon-Nelson Models, and the reaction rate constant K for the Thomas and Adams – Bohart models was Kb = KTh = 0.02037037 min-1 (R2=0.915), and for the kinetic models of Wang and Yoon – Nelson, KW=KYN = 0.022 min-1 was obtained and the time required to consume 50% of the adsorption bed was t1/2=258.09 min. The Wolburska kinetic model did not match well with the experimental data (R2=0.769).

A Summary of Wellbore Fluid Accumulation and Drainage Gas Production Technology in Gas Wells

The problem of fluid accumulation in the wellbore of a gas well is an important factor that affects the efficiency of gas production. If the fluid accumulation is serious, the production of the gas well will decrease, and then the gas well will be flooded and stop production. It is necessary to drain the wellbore fluid to the surface in time. This article analyzes the causes and diagnostic methods of wellbore fluid accumulation, and introduces conventional fluid drainage technology such as optimization of tubing, bubble drainage, gas lift fluid drainage and mechanical fluid drainage, aiming at improving the liquid carrying capacity of gas wells and improving the gas recovery efficiency of gas wells. Examples illustrate the feasibility of drainage technology and restore normal production of gas wells.

The production of the English stop voicing contrast by Arab L2 speakers of English

The English voiceless stop /p/ and voiced stop /ɡ/ are absent in the consonant inventory of Arabic. This difference provides a fertile ground for empirical research in L2 speech learning among Arab L2 speakers of English. The current study, therefore, aims to explore the English stop voicing contrast as produced by Arab native speakers. Focusing on Voice Onset Time (VOT) as an acoustic parameter, the study seeks to examine the extent to which (1) Arab L2 speakers of English maintain the English stop voicing contrast for /p-b/ and /k-ɡ/, and (2) the L2 VOT continuum by Arab L2 speakers follows or deviates from the L1 VOT continuum in English. The acoustic phonetic experiment involved elicited materials of /p-b/ and /k-ɡ/ from four male native speakers of Arabic. The tokens were recorded in isolation (utterance-initial position) and in a carrier sentence (utterance-medial position). The data were then acoustically analysed following standard segmentation, annotation and measurement criteria. Results reveal that the Arab L2 speakers can, to a large extent, maintain the English stop voicing contrast across all places of articulation, with voiced stops usually being produced with “normal” negative VOT (prevoicing) and voiceless stops usually being produced with “normal” positive VOT and also accompanied with aspiration in the long-lag region. There are also exceptional cases of “abnormal” negative VOT (prevoicing) for voiceless stops and “abnormal” positive VOT (devoicing) for voiced stops, with an extremely larger number of devoiced tokens for voiced stops in comparison to prevoiced tokens for voiceless stops. The results accord well with the Speech Learning Model’s prediction that phonetically “new” sounds are relatively easier to learn than phonetically “similar” sounds. The conclusion is drawn that languages sharing the same sound contrast may exhibit different phonetic implementations in marking a phonological contrast.

Stencil control in the automatic insertion of a PIM Company

The article evaluated the control of Stencil in the subprocess of Printing of the SMD line of a company located in the Industrial Pole of Manaus (PIM), to provide subsidies to develop a computerized system. With computerization, the focus of employees will be directed to the activities of production and quality of manufactured products, also, the collection of process data, done in real-time, will allow managers to better monitor and take actions in the process. To this end, a case study, bibliographic research of articles, dissertations, and theses involving the theme, and documentary research (forms, records, etc.) with the sectors involved were used. The descriptive statistics method was applied, quality tools were used, aimed at identifying and solving problems such as PDCA, Pareto, Ishikawa Diagram, flow chart, and 5W2H. A study of the activities related to the control of the Stencil was carried out, of the documentation used in the process, as well as of the factors and causes related to the effective Stencil control. Among the results, 24 causes affect the performance of the Stencil control, concluding that the main failures were human, due to the prioritization of production goals by the employees, leaving the other activities in the background, which is why the 24 guidelines proposed for the computerization of this process become relevant, some of which are: defining means to identify each Stencil using a bar code or QR code; do not allow the use of the Stencil if one of the activities unfinished in the process; stop production when an activity is not performed; digitize the documents used in this process; create an automatic notification to those responsible, when an action is necessary, etc.

Sustainable Marketing: Market-Driving, Not Market-Driven

Sustainability has emerged as a critical macromarketing perspective over the last five decades. Starting with the early concerns in the 1960s about the world’s finite resources that would limit economic growth, sustainability thinking has expanded to encompass societal issues and ecological and environmental considerations in economic and governance activities. Governments and businesses need to act in tandem to address myriad world problems associated with climate change, pollution, environmental degradation, depleting resources, and the socio-economic disparities that characterize persistent world hunger and poverty. A vital aspect of this challenge is to stop or reverse unsustainable production and consumption that have hitherto been pursued as part of market-driven business activity. Marketing, through its market-driven consumption-oriented practices, may have knowingly or unknowingly promoted these unsustainable production-consumption practices. Therefore, it needs to change its orientation from merely being responsive to consumer and market needs into a more responsible approach that drives markets for sustainable products and services and builds sustainable societies. In this paper, we review how sustainable marketing considerations have grown but not to the extent of becoming the driver of markets and business practices that meet sustainability goals. To this end, we present a framework for driving sustainable consumption through corporate marketing strategy and relevant government interventions. We highlight four strategies of corporate marketing and four types of government intervention for sustainable marketing.

Probing single stop production at the FCC-hh/SPPC

Top squark (stop) is a crucial part of supersymmetric models (SUSY) to understand the naturalness problem. Other than the traditional stop pair production, the single production via electroweak interaction provides signals with distinctive features which could help confirm the existence of the top squark. In this paper, we investigate the observability of stop through the mono-top channel of the single stop production at the future proton-proton colliders, FCC-hh and SPPC, in a simplified Minimal Supersymmetric Standard Model (MSSM). With the integrated luminosity of 3000 fb−1, we can probe the stop with mass up to 3.25 TeV by the mono-top channel at 5σ level. Considering the systematic uncertainty of 10%, the exclusion limit for stop mass can be reached at about 1.5 TeV. Exclusion limits on stop mass and higgsino mass parameter μ are also presented.

Welche Branchen sind \xf6konomisch systemrelevant?

ZusammenfassungIm Zuge der Coronavirus-Pandemie stellt sich die Frage, welche Branchen systemrelevant sind. An erster Stelle stehen Bereiche wie Gesundheit und Pflege sowie alle Branchen, die die Versorgung des täglichen Bedarfs abdecken. Dabei reicht es jedoch nicht, nur die Branchen anzuschauen, die direkt für den Endverbrauch wichtig sind. Die gesamten Wertschöpfungsketten müssen betrachtet werden. Mithilfe der Input-Output-Rechnung werden die Vorleistungen einbezogen und die besonders systemrelevanten Branchen identifiziert.

The Use of the Glottal Stop as a Variant of /s/ in Puerto Rican Spanish

AbstractThis paper examines the glottal stop in word-final position as a variant of /s/ in Puerto Rican Spanish. Previous research (Tellado González 2007; Valentín-Márquez 2006) generally focused on the glottal stop in word-final position between vowels (e.g., /lasalas/ ‘the wings’). In this paper, we investigate the glottal stop not only in this context, but also in word-final position when preceded by a vowel and followed by a consonant (e.g., /lostakos/ ‘the tacos’), and in word-final position when preceded by a vowel and followed by a pause (e.g., /los takos#/ ‘the tacos’). Specifically, the effects of following segment, stress of the following syllable, gender, age, and English use and proficiency on glottal stop production were investigated. The data came from sociolinguistic interviews with 19 participants (8 female, 11 male; Age range: 18–63 years) from San Juan, Carolina, and Guaynabo. The results showed that the glottal stop occurred not only between vowels, but also when followed by a consonant or a pause. Additionally, the glottal stop appeared significantly more before stressed syllables. There were no significant effects of age or gender. Although the effects of English use and proficiency were not significant, we discuss the potential role that contact with English may play in glottalization rates.

Reduction of Contagion Risks by SARSCov-2 (COVID-19) in Air-Conditioned Work Environments

Background The coronavirus emergency obliged Italy's government to stop production and trade activities to limit the =risk of contagion. Italy will restart activities in a few days and some security measures will have to be taken to limit the risks of spreading the virus as much as possible. Objective This work summarizes the rules that are to be adopted for the reduction of the risks of SARS-CoV-2 infection with particular regard to the air conditioning systems in working environments, the sources of risk, and possible risk reduction measures. Results Ducted air systems are of great importance, widespread, and often overlooked in risk assessment. Scientific evidence has shown that air conditioning systems can be both an infection risk reducer and, if misused, a multiplier of infection possibility. Limitations A narrative review with paucity of literature.

First, tau causes NO problem.

Pathological tau disrupts the association between nitric oxide (NO) synthase and PSD95, impairing NO signaling and neurovascular coupling before causing neurodegeneration. Stopping production of pathological tau rescues NO signaling, neurovascular coupling and neuronal function, but doesn’t remove tangles, suggesting that (like amyloid-β) soluble tau is an important driver of early neurovascular dysfunction and subsequent neuronal damage.

Reservoir Commentary: Potential Implications of Long-Term Shut-Ins on Reservoir

This commentary has been prepared by the SPE Reservoir Advisory Committee (RAC) to provide high-level insights for the discussion on the potential consequences of long-term shut-ins on conventional and unconventional reservoirs. The RAC comprises 61 subject matter experts (SMEs) covering the domain of reservoir technical discipline. The views presented in the commentary are the opinions of the SMEs and do not constitute an official position of the SPE on the subject matter. Find the full and unabridged version, including all references, at http://go.spe.org/RAC_Commentary. Orientation From a completions, production, and facilities perspective, there are significant, and potentially devastating, effects for the long-term shut-ins of wells. Everything we leave in the well and the surface facilities will be subject to corrosion, deterioration, and other chemical/mechanical effects. Perforations and the well itself may become plugged and deformed and the pumps and bottomhole assemblies may be rendered dysfunctional due to the settlement of sand and other debris/contaminants. Moreover, scale buildup and wax and asphaltene precipitation in and around the wellbore are well-known potential problems during shut-ins. The oil and gas industry has a very long history of well surveillance, well maintenance, and well remediation - but as an induction, we have not had any circumstances on the scale of the current situation. Simply put, we may not be able to bring these wells back on line without workovers and, in some cases, restimulation. Furthermore, recompletions, restimulations, chemical treatments, workovers, etc. may not be viable solutions in many cases, particularly for poorly performing wells, of which there will be many. The impact on supply chains may/will be challenging in regards to the material, expertise, and timing to complete efforts for restimulation. These facts are indisputable, and have been recently documented in a JPT article by King and Garduno (2020) and in an SPE Live interview of George King by David Gibson (2020). Experience With Shut-Ins in Conventional Reservoirs Long-term shut-ins of conventional reservoirs for years and even decades have occurred under extraordinary circumstances - such as war or civil unrest (e.g., Iraq’s invasion of Kuwait in 1990, Arab Spring uprisings in early 2010s, and unrest in Nigeria from 2003 to 2007). In these cases, damages to the production facilities were catastrophic as the facilities had not been properly maintained, or as in the case of wars, the facilities and wells were destroyed. However, from a reservoir standpoint, there were also benefits of long-term shut-ins, in particular, due to repressurization of the field and stabilization of the fluid contacts (Dujardin et al. 2011). Wells in conventional offshore reservoirs are routinely shut in for moderate periods (&amp;lt;1 month) due to maintenance, seasonal demand, and weather-related issues - and, in many/most cases, there seems to be no significant nor permanent reservoir damage. In cases of severe water or gas coning due to aggressive production rates, stopping or reducing production may help stabilize fluid contacts. Rate reduction is also often correlated with higher recovery but the net-present value usually suffers.

The Expected Effects on the Financial Statements According to Requirements of the IAS (10) in Light of the Coronavirus Crisis (Analytical Study)

The appearance of the Coronavirus affected the global economy and its effects varied according to the nature of companies and may reach in some sectors to the declaration of bankruptcy, as those interested in this field began to develop solutions to reduce its economic effects, as well as finding remedies for events after the date of preparing the financial statements, this is what the international standard (10) treat it, and from here the research problem came: is the financial statements modified or are changes only disclosed? and the research aims to find treatments for the events following the date of preparing the financial statements, and among the conclusions that the effects that the virus left on the financial statements must be disclosed such as declining assets, declining stock prices and stopping production, as well as ensuring the appropriateness of continuity assumption.

Nine die in Indian plant explosion

A boiler explosion and subsequent fire at a plant in New Delhi operated by the agrochemicals producer Yashashvi Rasayan is reported to have killed 9 workers and injured 79. Many of the injured were treated for burns, and residents in two nearby villages were evacuated. A subsidiary of Patel Group, Yashashvi Rasayan makes pesticides and compounds such as 2,5-dichloroaniline, a precursor for dyes and pigments. Local authorities have ordered the plant to stop production until adequate safety measures are in place, reports the online regional news service DeshGujarat. A few weeks ago, a styrene gas leak at LG Chem’s polystyrene facility in Visakhapatnam, India, killed 12 people and sent many more to the hospital.

Особенности реконструкции промышленных зданий

The article discusses the basic principles of the reconstruction of industrial buildings, which are associated with an increase in the scale of production, improvement of technological processes, as well as the introduction of innovations that contribute to increasing labor productivity and the quality of products. The main aspects are also noted, taking into account which it is possible to reconstruct the building as soon as possible and without stopping production processes.

Penjadwalan Perawatan dengan Metode Campbell Dudel Smith (CDS) untuk Meningkatkan Produksi Mesin Recycle Waste Tembakau

The Campbell Dudek Smith (CDS) method is commonly used by large companies to help them make Flowshop schedules. The purpose of this study is to design a more effective maintenance scheduling sequence in order to increase the amount of production with the most efficient use of time without having to stop production and be able to calculate the productivity of the machine it self. Partial Productivity (PP) analysis is used to determine the level of machine productivity by proving Partial Productivity (PP) after is better than Partial Productivity (PP) before. This research was conducted at PT. X, one of the leading national companies in producing cigarette products such as SKT cigarettes, SKM and SPM. As a result, this study has performed calculations using the Campbell Dudek Smith (CDS) algorithm and calculates the productivity of each iteration using Partial Productivity (PP). The recommended improvement of the engine maintenance scheduling sequence is by applying the scheduling sequence to the 5th iteration, J2-J4-J3-J1-J5.

FORMATION OF A SYSTEM OF INDICATORS FOR EVALUATING THE EFFICIENCY OF THE ORGANIZATIONAL STRUCTURE OF A PRODUCTION AND TRADE ENTERPRISE

The study proposed a system of indicators to assess the effectiveness of building the organizational structure of production and trading enterprises, which consists of three groups that reflect: the effectiveness of the enterprise’s management structure through the end results of its activities and management costs, which reflect the content and process of organizing the enterprise’s management structure and management costs that characterize the rationality of the organizational structure of the enterprise and its technical, organizational level. Based on the proposed groups of indicators, it is recommended to conduct an expert survey of trade specialists in order to obtain a real integral conclusion about the appropriateness of assessing the effectiveness of restructuring the organizational structure of the enterprise.Evaluation of the management effectiveness of a manufacturing and trading enterprise serves as an important element in the development of preplanned decisions, which makes it possible to determine the level of adaptability and progressiveness of an existing or projected structure, measures taken in the process of modernizing an enterprise, choosing the most rational version of a structure, and a way to improve it. Moreover, the effectiveness of the organizational structure is evaluated by designers in the process of consulting work to improve management.A comprehensive set of performance indicators for the management system of a manufacturing and trading enterprise is formed taking into account the following directions of evaluating its effectiveness: the degree to which the results correspond to the goals of market activity, the degree to which the process of functioning of the management system meets the requirements for its content and production results.The weak point of most organizational design projects is the lack of attention to the specifics of production and trading enterprises as objects of performance evaluation. As a result, the effect of grouping units is distorted; there is a shift of guidelines when substantiating the integrated activities that are laid down in the project, or the comparability of the options for these activities.The situation in the Ukrainian economy is such that for most trading enterprises, organizational changes are a prerequisite for their survival, to avoid stopping production and trade. In such cases, the characteristics of the systemic effect can be considered in the form of ordinary indicators of the effectiveness of production and trading activities.

Mono-b events from single stop production at the HL-LHC and HE-LHC

Top-squarks (stop) play an important role in SUSY naturalness. The stop pair production is considered as the most effective way to search for stop at the LHC. However, the collider signature of stop pair production is usually characterized by tt¯ plus missing transverse energy, which is also predicted in many other non-supersymmetric models. On the other hand, the single stop production via the electroweak interaction can provide some distinctive signatures, and thus will help to confirm the existence of the stop. In this paper, we investigate the observability of the mono-b events from the single stop production process pp→t˜1χ˜1−→b+E̸T in a simplified MSSM framework where the higgsinos and stops are the only sparticles at the HL-LHC and HE-LHC. We find that the stop mass and the higgsino mass may be probed up to about 1.6 TeV and 550 GeV at 5σ level at the HE-LHC with the integrated luminosity L=15ab−1. We also present the 2σ exclusion limits of the stop mass at the HL-LHC and HE-LHC.