Top Production Research Articles

2-DOF Preview Feedforward Sliding Mode Controller for the Control of Multivariable Process with Dead Time

This paper proposes a 2-DOF preview feedforward sliding mode controller (PFFSMC), which has a combination of feedback and feedforward terms in the sliding surface, for controlling the multivariable process with dead time, for both set point tracking and disturbance rejection. The proposed controller is applied for the control of the Wood and Berry binary distillation column having the composition of top and bottom products. The performance of the 2-DOF PFFSMC is compared with that of the 1-DOF preview sliding mode controller. The proposed controller delivered better responses for set point tracking and for disturbance rejection. The performance of the proposed 2-DOF PFFSMC is compared with the other controllers reported in the literature and, it was found that there was a significant reduction in the settling time by more than 76%, without any overshoot in the closed loop response. The proposed controller was robust against ±5% parametric uncertainties in gain, time constant, and dead time when these uncertainties were considered alone and together. The stability of the proposed controller was verified using the Lyapunov stability criterion.

The young and the old, the fast and the slow: a large-scale study of productivity classes and rank advancement

ABSTRACT We examined a large sample of Polish science, technology, engineering, mathematics, and medicine (STEMM) scientists (N = 16,083) to study rank advancement and productivity in the past 40 years. We used two previously neglected time dimensions – promotion age and promotion speed – to construct individual lifetime biographical and publication profiles. We followed a classificatory approach and the new methodological approach of journal prestige–normalized productivity. All scientists were allocated to different productivity, promotion age, and promotion speed classes (top 20%, middle 60%, and bottom 20%). The patterns found were consistent across all disciplines: scientists in young promotion age classes (and fast promotion speed classes) in the past were currently the most productive. In contrast, scientists in old promotion age classes (and slow promotion speed classes) in the past were currently the least productive. In the three largest disciplines, the young-old promotion age productivity differential for associate professors was 100–200% (150–200% for full professors), and the fast-slow promotion speed productivity differential for associate professors was 80–150% (100–170% for full professors). Our results were partly supported by a regression analysis in which we examined odds ratio estimates of belonging to top productivity classes. To examine the sample, we combined biographical and demographic data collected from the national register of all Polish scientists and publication metadata on all Polish articles indexed in Scopus (N = 935,167).

The Analysis of Sustainable Business Model in Traditional Chinese Tea Industry

Since ancient times, China has been a great tea country, the worlds largest tea planting area, and the worlds top tea production. Over the entire Chinese tea industry, there are countless large and small tea factories but few famous tea brands, seriously affecting the industrys sustainable development. Thus, creating a famous tea brand is a huge challenge for Chinese tea. In addition, the world currently cultivates tea in many countries, such as Sri Lanka, India, Turkey, Kenya, etc. China is a large tea producer and is always an important economic crop. With the modern, fast-paced urban life, the new tea consumption style is more suitable for the domestic and international consumer market and meets the needs of the public. This paper explores to convert and upgrade the traditional Chinese tea industrys business model by recognizing and analyzing the globally well-known brand Lipton Tea. Firstly, it is no longer limited to the traditional tea culture, and combining the tea culture with commercial activities to create a fashionable tea culture; secondly, to apply the tea to a wider range of consumer markets rather than limiting it to the tea-drinking market only; and then through the assistance of new media such as e-commerce and We media to promote the product, this series of upgrading from the internal to the external business model can improve the popularity of Chinese tea brands, the rapid development of the tea industry will also give Chinas economic market to bring sustainable development of the new power.

Top Secrets: long-lived ALPs in top production

We investigate the discovery potential for long-lived particles produced in association with a top-antitop quark pair at the (High-Luminosity) LHC. Compared to inclusive searches for a displaced vertex, top-associated signals offer new trigger options and an extra handle to suppress background. We design a search strategy for a displaced di-muon vertex in the tracking detectors, in association with a reconstructed top-antitop pair. For axion-like particles with masses above the di-muon threshold, we find that the (High-Luminosity) LHC can probe effective top-quark couplings as small as |ctt|/fa = 0.03 (0.002)/TeV and proper decay lengths as long as 20 (300) m, assuming a cross section of 1 fb, with data corresponding to an integrated luminosity of 150 fb−1 (3 ab−1). Our predictions suggest that searches for top-associated displaced di-muons will explore new terrain in the current sensitivity gap between searches for prompt di-muons and missing energy.

Social Media Marketing Strategy in Chinese Musical Theatre Industry

The usage of social media in the context of musical theatre marketing continues to grow. More and more musical theatre production companies in China are using social media tools such as Weibo to provide various services and interact with customers. In an effort to help understand how the current musical theatre industry conducts social media marketing and the future development direction, this paper describes a case study which applies content analysis to examined posts on Weibo sites of five top musical theatre production companies: Seven Ages, Shanghai Culture Square, Musicals, Focustage, and Amazing Musicals. The results provide insights into the characteristics of social media marketing strategies of musical theatre production companies and changes after covid-19 pandemic. The study results add to the rapidly evolving field of social media within the musical theatre industry marketing context. Moreover, it advocates for an active role for the musical companies to explore and actively participate in the customer and musical fan communities on social media.

An anatomy of Nepal’s remarkable export decline: A note

This paper documents and breaks down a remarkable decline in Nepal’s exports over the 2000–2019 period. This decline is due to a collapse in the country’s top export products and is largely uniform across destinations and products. Furthermore, it is not on account of the poor global performance of the sectors Nepal was specialized in but is something more specific to Nepal. Industry-level statistics show that gross output increased in major exporting industries while value-added grew slower or declined. The increase in gross output together with the decline in exports implies a movement towards producing for domestic consumption using more imported inputs. These patterns are broadly consistent with the expected effects of the surge in remittances Nepal experienced over this time period. Remittances would cause the economy to transition towards domestic consumption and re-orient domestic production accordingly.

The effect of weather factors on the efficiency of macro- and microfertilizers for the red clover cultivation in the conditions of the Kostroma region

Strengthening the forage base is an important task for the successful development of animal husbandry in the Kostroma region, and the main role in this belongs to red clover. The purpose the current study was to identify the dependence of the productivity of clover green mass on the type and dose of top dressing, when using sparing doses of fertilizers and environmentally friendly types of processing. The study was carried out on the basis of the Kostroma Research Institute of Agriculture in 2020–2022. The two-factor trial consisted of 15 options (three backgrounds – Control, Ozone and “Aquamix”, and 5 options for different doses of top dressing) in three sequences, the area of one plot was 6 m2. There was taken the clover variety ‘Soligalichesky mestny’ as the most adapted to the soil and climatic conditions of the region. During the study, there was found a dependence of the efficiency of the applied fertilizers on weather factors during the vegetation period. Thus, under favorable climatic conditions, the complex “Aquamix” was effective both in pre-sowing treatment and in the form of foliar top dressing. In the variants with its use, there was obtained a significant improvement of green mass productivity and general productivity indicators. The P30K30 dose was the most effective among all mineral top dressings. When increasing the dose and introducing nitrogen (N30P45K90) in the top dressing, productivity and quality of the green mass decreased mainly due to grass lodging. During the unfavorable vegetation period (summer drought), microelements did not affect forage mass productivity and quality. Only top dressing with mineral fertilizers was effective, and the best result was obtained with a higher dose and the full composition of top dressing (N30P45K90). Seed ozonation was effective under all weather conditions. The best result in a favorable year was obtained in the variant Ozone + P30K30 (+43.8 t/ha of green mass, or 153 %), in an unfavorable year it was Ozone + N30P45K90 (+16.1 t/ha, or 111 %). The dose of mineral top dressing ought to be adjusted depending on the weather conditions of a particular vegetation period.

Dental Amalgam and the Minamata Convention on Mercury Treaty: Make Mercury History for All

Mercury, known as the most toxic non-radioactive element to man, poses a significant threat to all living beings and the environment in all its forms. As a global pollutant, it demands urgent attention and effective measures to mitigate its toxic effects. The Minamata Convention on Mercury Treaty, adopted in 2013 and enforced in 2017, stands as a vital instrument in combating this pervasive toxin. Presently, 144 countries have ratified the treaty, embodying the collective commitment to the mantra "Make Mercury History." As countries work diligently to eliminate mercury from various products and processes, such as thermometers, batteries, lighting, and cosmetics, dental amalgam remains a notable concern. Being one of the top mercury-containing products globally, dental amalgam has drawn attention for its phasedown approach within the treaty. The dental sector alone accounts for an estimated 340 tonnes of mercury usage each year. Alarmingly, mercury derived from dental amalgam infiltrates the black market, ultimately entering the artisanal small-scale gold mining (ASGM) sector, the primary source of global mercury pollution. Furthermore, dental amalgam plays a significant role in municipal wastewater mercury contamination, as it has been identified as the largest source of this toxic element in such environments. Considering its pervasive nature, diverse pathways of contamination, and its ability to bioaccumulate in both humans and the environment, it is evident that the toxic legacy of dental amalgam will persist long after the placement of the last amalgam filling. The pressing issue of mercury toxicity makes it imperative for action to be taken through the Minamata Convention on Mercury Treaty. As we strive to "Make Mercury History" for the well-being of all living organisms, mercury dental amalgam must be proactively addressed to prevent its continued contribution to global mercury pollution.

The usefulness of food web models in the ecosystem services framework: Quantifying, mapping, and linking services supply

Coastal ecosystems provide a wide range of valuable ecosystem services (ES) for human wellbeing. Such services depend on the functioning and structure of ecosystems. Unfortunately, these ecosystems are threatened by humans, directly impairing their ability to provide these services. In order to predict such changes, we used a food web model to forecast potential spatial changes in ES supply in the Seine Bay (English Channel), due to climate change effects (CC) and the setup of an offshore wind farm (OWF). Three ES were studied, food production from fishing, top predator production for cultural purposes and the potential resistance of the ecosystem inferred from its organization. The ability of the Seine Bay ecosystem to produce food appears to be negatively impacted by the effect of climate change. Because of the important economic role of fishing in Normandy, such changes could percolate on the entire social and economic system of the bay. The Courseulles-sur-Mer offshore wind farm appears to increase the supply of services and limit the impact of climate change at the local spatial scale, which could give stakeholders insights into mitigating the effects of climate change. Such ecosystem approach enables for a more integrative view of ES supply, through the characterization of the entire system functioning.

Pengaruh Desain Kemasan terhadap Keputusan Pembelian Produk Biskuit dan Makanan Ringan PT Siantar Top Tbk Pada Siswa Siswi SMA Santa Lusia Bekasi

This study aims to obtain empirical evidence regarding the effect of packaging products with indicators packaging brand, packaging images, packaging shapes and packaging colors on the buyer's decision of PT Siantar Top Tbk products on students of SMA Santa Lusia Bekasi. The data used are primary data and the student population of SMA Santa Lusia Bekasi. The sample selection method used is the probability sampling method. The total population in this study was 101 high school students from Santa Lusia Bekasi and the sample used was 50 students from SMA Santa Lusia Bekasi. Buyer's decision as the dependent variable, while the packaging brand, packaging image, packaging shape and packaging color are used as independent variables. The method used is multiple regression analysis using the SPSS program. The results of the research that have been carried out show that the packaging brand variable has a significant number of 0.030, the shape of the packaging has a significant number of 0.025 and the color of the packaging has a significant number of 0.000 which means that it partially affects the buyer's decision because it gets a number below 0.05, while the variable the packaging image has a significant number of 0.108 which means that it partially has no effect on purchasing decisions because it gets a number above 0.05, and the sour brand variable, packaging image, packaging shape and packaging color have a significant number of0.000 which means it has a simultaneous effect on the decision. buyers for getting numbers below 0.05.

SENTIMENT ANALYSIS ON REVIEWS OF WOMEN'S TOPS ON SHOPEE MARKETPLACE USING NAIVE BAYES ALGORITHM

Reviews of women's tops in the market are valuable information if processed properly. Merchants can conduct product review analysis to obtain information that can be used to evaluate products and services. Product review analysis activities are not enough just to see the number of stars, it is necessary to see the entire content of the review comments to be able to know the intent of the review. Sentiment analysis system is a system used to automatically analyze online product reviews to obtain information including sentiment information that is part of online reviews. The data is classified using Naive Bayes. The data collected were 1,000 product reviews of women's tops as samples. The purpose of this study is to determine the sentiment analysis of female top product reviews using the Naive Bayes algorithm. The stages of this research include data collection, labeling, pre-processing, sentiment classification, and evaluation. In the pre-processing stage there are 6 stages, namely Cleaning emoticons & symbols, Case folding, Word Normalizer, Tokenize, Stopword Removal and Stemming. TF-IDF (Term Frequency - Inverse Document Frequency) method is used for word weighting. The data will be classified into 3 (three) classes, namely negative, positive and neutral. The data will then be evaluated using accuracy parameter testing. The test results show an accuracy value of 89%, this result shows that the product reviews of women's tops are more positive.

A Review of Sapodilla Beneficial Use, Production Status, and Propagation Technique

Manilkara zapota, commonly known as sapodilla, is one of tropical fruits, originating from Central and South America that is still less popular in Indonesia, as compared to banana, citrus, mango, etc. To gain its popularity, it is crucial to review beneficial uses, existing production status and propagation techniques of sapodilla. In general, sapodilla is used for either table fresh fruit. Additionally, it contains various bioactivities in its fruit, stem, and leaves, such as antioxidant, antimicrobe, and antitumor activity; thus, become very potential for pharmaceutical purposes. The existing production data of sapodilla determine the West Java Province as the biggest production area in Indonesia, with total contribution of about 21% or 38.250 tons. In more detail, the top production area at the village level with a local sapodilla cultivar, namely Sukatali sapodilla, is found in Sukatali Village in Situraja Subdistrict, Sumedang District, West Java Province. Sapodilla can be propagated by using both reproductive and vegetative methods. Vegetative propagation of grafting is commonly used to produce shorter juvenile and uniform seedlings. However, it is highly dependent upon the grafting type, grafting season, and scion diameter. The modified cleft grafting is the best grafting type rather than cleft and veneer grafting. Several rootstocks that are commonly used for sapodilla seedling are Chrysophyllum lanceolatum and Manilkara hexandra. June-July is the best period to having grafting. The scion with a diameter of 5.02 mm is recommended due to adequate food reserves for recovery growth.

Associated production of Higgs and single top at the LHC in presence of the SMEFT operators

We analyse the single top production in association with the Higgs at the Large Hadron Collider (LHC) using Standard Model (SM) effective operators upto dimension six. We show that the presence of effective operators can significantly alter the existing bound on the top-Higgs Yukawa coupling. We analyse events at the LHC with 35.9 and 137(140) fb−1 integrated luminosities using both cut-based and machine learning techniques to probe new physics (NP) scale and operator coefficients addressing relevant SM background reduction. The four fermi effective operator(s) that contribute to the signal, turn out to be crucial and a limit on the top-Higgs Yukawa interaction in presence of them is obtained from the present data and for future sensitivities.

Measurement of the cross section of top quark-antiquark pair production in association with a W boson in proton-proton collisions at sqrt{s} = 13 TeV

The production of a top quark-antiquark pair in association with a W boson ( textrm{t}overline{textrm{t}}textrm{W} ) is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The analyzed data was recorded by the CMS experiment at the CERN LHC and corresponds to an integrated luminosity of 138 fb−1. Events with two or three leptons (electrons and muons) and additional jets are selected. In events with two leptons, a multiclass neural network is used to distinguish between the signal and background processes. Events with three leptons are categorized based on the number of jets and of jets originating from b quark hadronization, and the lepton charges. The inclusive textrm{t}overline{textrm{t}}textrm{W} production cross section in the full phase space is measured to be 868 ± 40(stat) ± 51(syst) fb. The textrm{t}overline{textrm{t}}textrm{W} + and textrm{t}overline{textrm{t}}textrm{W} − cross sections are also measured as 553 ± 30(stat) ± 30(syst) and 343 ± 26(stat) ± 25(syst) fb, respectively, and the corresponding ratio of the two cross sections is found to be 1.61pm 0.15{left(textrm{stat}right)}_{-0.05}^{+0.07}left(textrm{syst}right) . The measured cross sections are larger than but consistent with the standard model predictions within two standard deviations, and represent the most precise measurement of these cross sections to date.

PENGARUH PENGETAHUAN PRODUK, KEBERAGAMAN PRODUK DAN GAYA HIDUP TERHADAP LOYALITAS MEREK

This research was conducted because it had the objective to determine the effect based on product knowledge, product diversity and lifestyle on brand loyalty. A quantitative approach is used for this study so that the research data is in the form of numbers. The analysis tool uses multiple linear regression which is supported by the SPSS version 26 application. The population is buyers of PT Siantar Top products domiciled in the city of Surabaya and the research sample is 100 respondents obtained based on a purposive sampling technique. Based on the research that has been done and from the results of testing the hypothesis, it can mean that there is a positive influence between product knowledge, product diversity, and lifestyle on brand loyalty. The hope is that in producing this healthy food, so that all people can consume these products so that consumers who are on a diet program will also feel the benefits and this can create brand loyalty because it meets consumer needs.

Search for top squark pair production in a final state with at least one hadronically decaying tau lepton in proton-proton collisions at sqrt{s} = 13 TeV

A search for pair production of the supersymmetric partner of the top quark, the top squark, in proton-proton collisions at sqrt{s} = 13 TeV is presented in final states containing at least one hadronically decaying tau lepton and large missing transverse momentum. This final state is highly sensitive to scenarios of supersymmetry in which the decay of the top squark to tau leptons is enhanced. The search uses a data sample corresponding to an integrated luminosity of 138 fb−1, which was recorded with the CMS detector during 2016–2018. No significant excess is observed with respect to the standard model predictions. Exclusion limits at 95% confidence level on the masses of the top squark and the lightest neutralino are presented under the assumptions of simplified models. The results probe top squark masses up to 1150 GeV for a nearly massless neutralino. This search covers a relatively less explored parameter space in the context of supersymmetry, and the exclusion limit is the most stringent to date for the model considered here.

Variation in agro-physiological parameters of Vigna radiata (L. R. Wilczek) under different supplemental irrigation frequencies

The study was aimed at investigating the effect of supplemental irrigations on physiological and agronomic responses of mungbean through evaluation of transpiration, leaf water potential, chlorophyll content and seeds yield during drought pockets. A completely randomized block device with three replications was used to conduct the rainy season study. Four watering regimes were applied from the 26th day after seed sowing and during drought pockets: rain only (0J), tap water after 5 days without rain (5J), after 10 days without rain (10J) and after 15 days without rain (15J). Supplemental irrigation had a significant effect on transpiration, leaf water potential and chlorophyll content of plant leaves. Leaf water potential was the lowest and the highest transpiration at 70 DAS under the 5J supplemental irrigation regime, with higher chlorophyll content. The study also revealed that the frequency of irrigation every 5 days without rain significantly improved the harvest index (p?0.004), the number and mass of seeds per plant (p?0.001), justifying the choice of this water treatment for a better production of well-filled seeds and tops.

Who prefers what? Correlates of preferences for next-generation HIV prevention products among a national U.S. sample of young men who have sex with men.

Pre-exposure prophylaxis (PrEP) has been available for young people for over a decade, yet only ∼15% of young people in the United States with indications for PrEP have a prescription for it. Next-generation PrEP modalities may address some of the challenges of daily oral PrEP. However, preferences for these products are unknown. From October 2020 to June 2021, we conducted an online survey of 737 cisgender, young men who have sex with men (age 15-24 years) without HIV across the United States who reported same-sex attraction or consensual sex with another man in the past 6 months. Participants completed a conjoint experiment comparing daily oral pills, event-driven oral pills, event-driven rectal douches, intramuscular injections, intravenous broadly neutralizing antibody (bnAb) infusions and subcutaneous implants. Participants ranked the products from most to least preferred. Exploded logit models examined the association between ranked preferences of PrEP modalities and socio-demographic and behavioural characteristics. Participants' mean age was 21 years (SD = 2.3), and 56% identified as White. Nineteen percent were currently taking daily oral PrEP, and another 9% had previously taken it. Participants prioritized efficacy, absence of side effects and costs in the conjoint analyses. Daily oral PrEP had the highest preference ranking, followed by event-driven oral (OR = 0.89, p = 0.058), injectable (OR = 0.83, p = 0.005), implant (OR = 0.48, p < 0.0001), bnAb infusions (OR = 0.38, p < 0.0001) and rectal douches (OR = 0.24, p < 0.0001). There were differences in PrEP preferences across age, insurance status, sexual behaviour, PrEP use history, HIV and sexually transmitted infection (STI) testing history, and STI diagnoses (omnibus tests: p < 0.05). Participants also provided reasons for selecting their top product choice: ease of use for those who chose daily oral (99%) and daily event-driven (98.5%); feel more protected against HIV for those who chose injectable (95.4%) and implants (100%); not worrying about forgetting to take it for those who chose bnAbs (93.8%); and being able to stop taking it when they want for those who chose rectal douche (90.9%). Next-generation modalities were less likely to be preferred over daily oral PrEP, with differences in the magnitude by socio-demographic and behavioural characteristics. Given the low uptake of daily oral PrEP, end-users' preferences for and concerns about PrEP products must be understood to ensure high acceptability and penetration.

Search for flavour-changing neutral current interactions of the top quark and the Higgs boson in events with a pair of τ-leptons in pp collisions at sqrt{s} = 13 TeV with the ATLAS detector

A search for flavour-changing neutral current (FCNC) tqH interactions involving a top quark, another up-type quark (q = u, c), and a Standard Model (SM) Higgs boson decaying into a τ-lepton pair (H → τ+τ−) is presented. The search is based on a dataset of pp collisions at sqrt{s} = 13 TeV that corresponds to an integrated luminosity of 139 fb−1 recorded with the ATLAS detector at the Large Hadron Collider. Two processes are considered: single top quark FCNC production in association with a Higgs boson (pp → tH), and top quark pair production in which one of top quarks decays into Wb and the other decays into qH through the FCNC interactions. The search selects events with two hadronically decaying τ-lepton candidates (τhad) or at least one τhad with an additional lepton (e, μ), as well as multiple jets. Event kinematics is used to separate signal from the background through a multivariate discriminant. A slight excess of data is observed with a significance of 2.3σ above the expected SM background, and 95% CL upper limits on the t → qH branching ratios are derived. The observed (expected) 95% CL upper limits set on the t → cH and t → uH branching ratios are 9.4times {10}^{-4}left({4.8}_{-1.4}^{+2.2}times {10}^{-4}right) and 6.9times {10}^{-4}left({3.5}_{-1.0}^{+1.5}times {10}^{-4}right) , respectively. The corresponding combined observed (expected) upper limits on the dimension-6 operator Wilson coefficients in the effective tqH couplings are Ccϕ< 1.35 (0.97) and Cuϕ< 1.16 (0.82).

The Effect of Social Media Influencer on Purchase Intention with Brand Image and Customer Engagement as Intervening Variables

An individual with a strong presence on social media, known as an influencer, has the ability to bridge the gap between a company and its target audience by conveying a favorable brand image to the audience. Social media influencers have the ability to shape brand image and customer engagement, which can then influence the interest in purchasing that brand. Tasya Farasya is a beauty influencer who often shares reviews about Makeover products. Her posts have created brand image and customer engagement among Makeover's audience. Compared to other beauty influencers, Tasya Farasya is one of the top 10 beauty influencers in Indonesia, with a high figur of followers and engagement rates. However, the Makeover product that Tasya Farasya reviewed is not the top cosmetic product in Indonesia. This can affect the brand image, customer engagement, and interest in purchasing Makeover. This study aims to assess how Tasya Farasya, a social media influencer, affects consumers' purchase intent for Makeover brand, focusing on the influence of brand image and customer engagement factors. In this study, a quantitative approach was employed, whereby data was gathered via a questionnaire. To analyze the data, Structural Equation Model (SEM) was utilized through the use of the SmartPLS software.