bluuebunny/crossref_metadata_2025 huggingface dataset:
Rising Through the Ranks: The Evolution of the Market for Corporate Executives, 1936–2003
Authors: Frydman Carola
Published: April 2019

I present new stylized facts on the market for managers over the twentieth century, utilizing a novel data set on managerial careers. From the 1930s to the mid-1970s, the level of executive pay, inequality among executives across and within firms, and mobility were low. These patterns have reversed since then. I document that an increase in the importance of general managerial human capital can account for this change. The level of general skills, measured by the type of education and occupational mobility of managers, correlate with higher pay and turnover. Other factors may have also contributed to these changes, but the labor market for managers has likely played an important role.

This paper was accepted by Wei Jiang, finance.
Pointwise Arbitrage Pricing Theory in Discrete Time
Authors: Burzoni Matteo , Frittelli Marco , Hou Zhaoxu , Maggis Marco , Obłój Jan
Published: April 2019

We develop a robust framework for pricing and hedging of derivative securities in discrete-time financial markets. We consider markets with both dynamically and statically traded assets and make minimal measurability assumptions. We obtain abstract (pointwise) fundamental theorem of asset pricing and pricing–hedging duality. Our results are general and, in particular, cover both the so-called model independent case as well as the classical probabilistic case of Dalang–Morton–Willinger. Our analysis is scenario-based: a model specification is equivalent to a choice of scenarios to be considered. The choice can vary between all scenarios and the set of scenarios charged by a given probability measure. In this way, our framework interpolates between a model with universally acceptable broad assumptions and a model based on a specific probabilistic view of future asset dynamics.
Robust Dual Dynamic Programming
Authors: Georghiou Angelos , Tsoukalas Angelos , Wiesemann Wolfram
Published: April 2019

In the paper “Robust Dual Dynamic Programming,” Angelos Georghiou, Angelos Tsoukalas, and Wolfram Wiesemann propose a novel solution scheme for addressing planning problems with long horizons. Such problems can be formulated as multistage robust optimization problems. The proposed method takes advantage of the decomposable nature of these problems by bounding the costs arising in the future stages through lower and upper cost-to-go functions. The proposed scheme does not require a relatively complete recourse, and it offers deterministic upper and lower bounds throughout the execution of the algorithm. The promising performance of the algorithm is shown in a stylized inventory-management problem in which the proposed algorithm achieved the optimal solution in problem instances with 100 time stages in a few minutes.
When Developers Disagree: Divergent Advice as a Potential Catalyst for Protégé Growth
Authors: Feldman Elana , Kahn William
Published: April 2019

Developmental relationships offer rich opportunities for personal growth, which enables people to operate effectively in complex work environments. Although it is now widely recognized that protégés typically have more than one developmental relationship simultaneously, few researchers have considered the ways in which developmental networks—comprising a protégé’s multiple developers—foster growth. We therefore know little about how protégés grow through their engagement in several concurrent relationships. In this paper, we suggest that understanding growth in the context of developmental networks requires viewing such networks as intertwined assemblages of dyadic relationships. Adopting this perspective, we theorize one way in which the interactions that protégés have across their various relationships may—cumulatively—catalyze growth. In our theorizing, we focus on a specific type of situation: instances when developers offer divergent advice about work-related issues. Our model traces how protégés cope with divergent advice through either an engaged grappling process or an avoidant retreating process. We theorize that whereas grappling activities yield high levels of growth, retreating activities produce no growth. However, we also suggest that protégés may oscillate back and forth between the grappling and retreating processes over time, thereby resulting in varying rather than binary growth outcomes. Our paper contributes to scholarship on developmental relationships and networks while also laying the groundwork for future empirical research.
The role of interleukin 1 in the development of human diseases
Authors: Nasonov E. L.
Published: April 2019

Human immuno-inflammatory diseases (IID), depending on the predominant mechanisms of immune activation, are divided into two main categories: autoimmune and autoinflammatory. It is assumed that hyperproduction of "proinflammatory" and immunoregulatory cytokine-interleukin 1 (IL 1) largely determines the "intersection" between the mechanisms underlying autoimmunity and autoinflammation in many IID. This review discusses the role of IL1 in the pathogenesis of IID, primarily those associated with the activation of NLRP3-inflammasome, and therapeutic perspectives of IL1β inhibition with monoclonal antibodies to IL1β – canakinumab. The study of the IL1 role in the regulation of interactions between innate (TLR activation, inflammasome) and adaptive (Th1 – and Th17-types of immune response) immunity and the efficacy of IL1 inhibitors may be important in terms of decoding the pathogenetic mechanisms of IID and the development of new approaches to personalized therapy.
Therapy with canakinumab for gout
Authors: Eliseev M. S. , Nasonov E. L.
Published: April 2019

A significant part of patients with gout has contraindications to taking nonsteroidal anti-inflammatory drugs, colchicine and glucocorticoids. Such therapy is often ineffective, particularly in patients with the severe tophaceous gout what hampers treatment of acute arthritis attack assuming the need for other methods of therapy. During the last years several medications have been introduced the mechanism of anti-inflammatory action of which is associated with inhibition of interleukin 1 (IL1) playing a key role in the development of acute gouty arthritis. To date, the most well-studied and the only registered drug for relief of acute arthritis attack is canakinumab, recommended for use in situations where other therapy options are unacceptable. Despite these limitations, the use of IL1 inhibitors, in particular canakinumab, seems promising due to the high efficiency of the drug, the ability to use it in patients with comorbid diseases, as well as a favorable effect on the risk of cardiovascular disease.
The China–Pakistan Economic Corridor
Authors: Akhtar Aasim Sajjad
Published: April 2019

Three hundred years after what became known in the nineteenth century as the Great Game—a struggle for regional hegemony between the British and Russian Empires—Southwest Asia remains an imperial staging ground. The U.S. invasion of Afghanistan in September 2001 signaled Washington's desire to cement its hegemonic position, but seventeen years later it is mired in an unwinnable war, even as the U.S. economy—and that of much of the Western world—endures the "endless crisis" of contemporary capitalism.

Click here to purchase a PDF version of this article at the Monthly Review website.
Germany's Hidden Social Crisis
Authors: Grossman Victor
Published: April 2019

Germany is commonly perceived as a strong, dependable island amid a sea of gyrating European uncertainties, a down-to-earth, dependable ally in attempts by the better U.S. presidents to move the world forward as steadily as possible. For the past thirteen years, this view has been personified in the clear, undramatic words and deeds of Angela Merkel, Chancellor of Germany since 2005. Considerable doubts in this appraisal, with evidence that Germany, like every other country, has never been a monolith free of class conflict and other contradictions, are addressed in Oliver Nachtwey's Germany's Hidden Crisis: Social Decline in the Heart of Europe, out now from Verso Books. In describing West German, then all-German, developments from the end of the Second World War until the present, Nachtwey analyzes from the left, unafraid to utilize the ideas of Karl Marx as well as a host of more recent analysts of many shades.
Population Genetics and Phylogeography of Bigeye Tuna in Moluccas Seas, Indonesia
Authors: Akbar Nebuchadnezzar , Irfan M. , Aris Muhammad
Published: April 2019

The bigeye tuna (Thunnus obesus) is a migratory fish which can be found in the Atlantic, Indian and Pacific oceans. This fish has a commercial value and has been exploited worldwide including in Indonesia. The exploitation might affect the genetic diversity and population structure. The fact that the population stock resource is abundant and following fishing activities are increasing, study on population genetic and phylogeography canbe used as information to determine the status of the fish population based on genetic data. The study was conducted to investigate population genetic, and phylogeography of bigeye tuna in the North Moluccas and South Mollucas Seas, Indonesia. A total of 60 tissue bigeye tuna samples were collected from two study sites. The samples were amplified using mitochondrial DNA control region. Within population genetic diversity was revealed of 0.985 and 1.00 in North Moluccas and in south Moluccas, respectively, while between populations was 0.989. The genetic distance within population of North Moluccas (0.029) and South Mollucas (0.24) was very low, and all population was 0.027. The genetic distance between population of North Mollucas and South Mollucas was 0.025, South Mollucas and all population was 0.023, and all population with Norht Mollucas was 0.027. The genetic distance of North Mollucas and Pacific Ocean was 0.029, South Mollucas and Pacific Ocean was 0.023, North Mollucas, South Mollucas and Indian Ocean was 0.32. The Fst value between populations (0.990) showed that the two populations were not genetically different. A similar result showed from the phylogenetic trees analysis which individual of bigeye tuna was randomly clustred between North Moluccas and South Mollucas population, indicating that they were genetically close and from the same population. The population bigeye tuna from the North Mollucas and the South Mollucas exhibits no apparent phylogeographic distribution.
Mangrove Ecosystem Management Strategy in Maron Beach Semarang
Authors: Fithor Alin , Sutrisno Joko , Indarjo Agus
Published: April 2019

Management of mangrove ecosystem is an important agenda in conserving tourism spots in coastal area. This research aimed at examining the recreation activities done in mangrove ecosystem area and mangrove forest strategy in Maron Beach, Tambakharjo, Semarang Municipality. This research employed a survey approach using direct interviews and field observations. The repondent included the entire population in the research area. Samples of this study were selected using cluster random sampling technique. Data were collected by observations, interviews and document study, followed by SWOT analysis. The results showed that the opening of Maron Beach recreation area has given some negative impacts to the post-rehabilitation of mangrove ecosystems, reducing the function mangrove in protecting the shore from coastal abrasion, reducing ability of wind abrasion protection, weakening the environmental conditions, decreasing the number of visitors and decreasing the production of fish. Mangrove forest management should be progressive, which means that research should be done in poor and unsteady conditions which result allow the market to continuously expand, enlarge the market growth and maximize the progress. Through the implementation of a non-overlapping effort, this condition can be improved.
Growth, Mortality, and Exploitation Rate of Penaeus merguensis in the North Coast of Central Java, Indonesia
Authors: Saputra Suradi Wijaya , Solichin Anhar , Taufani Wiwiet Teguh
Published: April 2019

One of the most-caught shrimp in north coast of Central Java is Penaeus merguiensis. However, little is known on the population biology of the organisms. This study was aimed to investigate length-weight relationship, growth, length at first capture (Lc50), mortality rate, and exploitation rate of P. merguiensis in Western part of Central Java’s northern coastal waters. The study was conducted from May 2016 to July 2017 using survey method. Samples were taken for 15 times (month) from 9 coastal fishing ports. The result shows that the relationship of the carapace length and weight is negative allometry. The growth parameters of CL∞ and K were 52.5mm and 1.3 y-1 (male) and 57.25mm and 1.2 y-1 (female). Total mortality rate (Z), natural mortality rate (M), and fishing mortality rate (F) were 4.51 y-1, 1.86 y-1 and 2.65 y-1 (male), and 5.36 y-1, 1.72 y-1, and 3.64 y-1 (female), respectively. The exploitation rate (E) of male banana shrimp was 0.59, and for female shrimp was 0.68. The result shows that the exploitation level has exceeded the optimum level (E>0.5). Recruitment of P. merguiensis may occur the whole year, but it peaks were in March and August (male), April and August (female). Carapace length of first captured (CLc50) was 20.63mm (male) and 18.28mm (female). It means that the sized of captured P. merguiensis is less than the size of first mature (CLm50) or growth overfishing and as a result, disrupting the availability of adult shrimp. The condition occurs due to the size of cod-end mesh measured 0.75inc.
Physiological and agronomic responses of maize (Zea maysL) cultivars to plant population and defoliation at post-anthesis in the humid rainforest
Authors: SAKARIYAWO Olalekan Suleiman , OGUNDIRAN Doyin , SOREMI Paul , ADERIBIGBE Sunday
Published: April 2019

Variations in response pattern of maize (Zea mays)grown at plant populations, defoliated at post-anthesis in the rainforest were tested. Two field trials were conducted at Abeokuta, (Longitude 3025’E, Latitude 7015’N; 144 m a.s.l) and Ibadan (3056’E, 7033’N: 168 m a.s.l), Nigeria in 2015. The trials consisted of maize variety {2009 TZE-W DT STR [open pollinated variety (OPV)] and TZEI 124 × TZEI 25 (hybrid)]} in the main plot, plant population (71111, 80000 and 106666 plant ha-1) in sub plot and defoliation (+ defoliation and – defoliation) as sub-sub plot. It was laid out in a split-split plot arrangement fitted into randomised complete block design with three replicates. OPV had significantly higher assimilatory surface, rate of current photosynthesis, reduced dry matter translocation efficiency, reduced days to 50 % anthesis and more 1000 grain massthan the hybrid maize, with similar grain yields. Both locations experienced increased leaf area index with increased plant population. Reduced 1000 grain massat both locations when maize was defoliated suggested a disruption in source:sink balance.
Allelopathic effect of two medicinal plants on seed germination, seedling growth and grain production of purslane (Portulaca oleraceae L.) weed
Authors: MOUSAVIAN Seyed Nader , ESKANDARI Hamdollah
Published: April 2019

A laboratory factorial (2 × 5) experiment was carried out based on completely randomized block in four replications to evaluate the effect of plant species and concentration of their allelopathic extracts on seed germination and seedling growth of purslane weed (Portulaca oleraceae L.). The first factor studied was plant species (Artemisia sieberi and Salvia syriaca) and the second one the concentration percentage of plant ethanol extract (0.0, 5 %, 10 %, 15 % and 20 %). The effect of Artemisia on germination reduction of purslane was stronger compared to Salvia. The results indicated that higher extract concentration led to decreased germination percentage, germination speed and seedling growth indices of purslane including leaf length, leaf number, leaf width, leaf dry mass, stem mass and stem length. The effect of Artemisia was higher than that of Salvia. In a complementary experiment, the effect plant residues of Artemisia and Salvia (0.0, 1, 2, 3 and 4 g kg-1 soil) were evaluated in a factorial experiment base on completely randomized block design with three replications. The results of field experiment showed that plant residues significantly (P ≤ 0.01) reduced capsule number per plant, seed number per capsule, seed production and shoot dry mass, while its effect on 1000-seed mass was not substantial. The effect of plant species and the interaction of plant species and their allelopathic extracts concentration had no major impact on the above-mentioned properties. The increase in plant residues in soil, led to the reduction of growth and seed production of purslane induced by plant number per unit area and capsule per plant. Artemisia sieberi Bess. and Salvia syriaca L. residues can be successfully used for non-chemical control of purslane weed.
Glomus intraradices (N.C. Schenck & G.S. Sm.) C. Walker & A. Schuessle enhances nutrients uptake, chlorophyll and essential oil contents and composition in Anethum graveolens L.
Authors: WEISANY Weria
Published: April 2019

Arbuscular mycorrhizal (AM) fungi are plant-root symbionts whose application in agriculture has been proven its efficiency. However, their application in medicinal plants and their impact on accumulation of essential oils (EO) is still limited. In order to investigate the effect of AM fungi (Glomus intraradices N.C. Schenck & G.S. Sm.) C. Walker & A. Schuessle) on nutrients uptake, biomass production, yield components, chlorophyll content, and EO content and composition in dill (Anethum graveolens L.), a field experiment was conducted as randomized complete block design with three replications. This medicinal plant was grown under AM fungi colonization and non-colonization treatments. Plant inoculation by mycorrhiza increased aerial tissues P and Fe concentrations. However, K, Ca, and Zn concentrations were not affected by AM colonization. The plants inoculated with AM significantly increased plant biomass, chlorophyll content, and EO content by 363 g m−2, 11.83 SPAD and 0.683 % in comparison with non-inoculated plants, respectively. Changes in EO composition were found in AM-colonized dill plants. The contents of myristicin, dill-ether and N-dihydrocarvone increased in EO obtained from AM-colonized plants, while AM colonization resulted in a lesser content of α-pinene, α-phellandrene, limonene, and β-phellandrene.
Divergence in hybrid rice parental lines detected by RAPD and ISSR markers
Authors: KIANI Ghaffar , KATALANI Camellia
Published: April 2019

Genetic distance between parental lines used in hybrid rice breeding program was estimated based on information from molecular markers data. Sixteen parents (5 CMS, 5 maintainers and 6 restorers) were analyzed with 15 random amplification polymorphic DNA (RAPD) and 20 inter simple sequence repeat (ISSR) marker. Out of 15 RAPD markers, 9 were polymorphic and 79 bands were generated, of which 28 bands were polymorphic (35 %). By using 10 out of 20 ISSR markers 86 bands were detected, of which 35 bands were polymorphic (41 %). Marker index (RAPD = 1.68; ISSR = 1.88) and percent of polymorphic bands indicated that ISSR markers were relatively more efficient in polymorphism detection. Cluster analysis of the parents based on Jaccard’s genetic similarity and UPGMA method were revealed 3 groups. Restorer lines IR68061 and IR5931 with origin of the Philippines were found in distinct group. Results suggesting the cross between CMS lines Neda and Nemat with restorer lines IR68061 and IR5931, can be used as the best heterotic groups for exploration of heterosis.
An overview of applications in pineapple agroindustrial residues
Authors: LIMA Franklyn da Cruz , SIMÕES Andressa Juliana Almeida , VIEIRA Isabela Maria Monteiro , SILVA Daniel Pereira , RUZENE Denise Santos
Published: April 2019

Industrial food production causes a high amount of waste. This waste must be taken to a suitable location where it can be further processing. During industrial processing of the pineapple, about 50 % of the mass of the fruit ends up being discarded becoming a residue. Researchers have studied these residues in order to add value to these by-products, to reduce disposal costs and guarantee environmental sustainability. This work investigates the development characteristics of research on agroindustrial residues of pineapple based on bibliometric methods to explore the structure of knowledge in this field over the years, according to the year of publication, periodicals, country, authors, area of knowledge, institutions, keywords, subject type, and citation analysis. In total 927 articles were found and after a careful analysis and selection of papers, 364 articles remained of which 82 % were published only in the last decade. Most studies focused on agricultural and biological sciences. About 1183 authors from 50 different countries contributed to this subject, in which India has the largest number of publications. The results obtained with this study, highlighting the different uses for pineapple residues, can provide valuable information for researchers interested in the field of agroindustrial wastes.
Applicability of invasive alien plants in controlling harmful organisms of cultivated plants
Authors: LAZNIK Žiga , BOHINC Tanja , TRDAN Stanislav
Published: April 2019

With a rapid growth invasive alien plants cause a lot of problems not only to indigenous varieties of plants, but also for people, as they are often the cause of many health problems, such as allergies, and they also contribute to greater economic loss. Plant protection is an activity which, on the basis of appropriate scientific knowledge by means of various methods and an economical manner, protects cultivated plants from harmful organisms. In Slovenia, as well as worldwide, the use of pesticides in plant protection programmes is the most widespread method due to price and other benefits. Researchers are looking for new, environmentally more acceptable ways of protecting plants against harmful organisms due to adverse environmental effects of pesticides, their non-target activity, the occurence of resistance to pesticides, and increasingly stringent environmental policies. One such measure is also the study of plant extracts in the suppresing of economically important harmful organisms. In a review article, we focused on the literature review of the usefeulness of plant extracts of several invasive alien plant species in plant protection: knotweeds (Fallopia japonica [Houtt.] Ronse Decr), F. x bohemica (Chrtek & Chrtková) Bailey), goldenrods (Solidago canadensis L., S. gigantea Aiton), stag's-horn sumac (Rhus typhina L.), tree of heaven (Ailanthus altissima [Mill.] Swingle), false indigo (Amorpha fruticosa L.) and stinkwort (Dittrichia graveolens [L.] Greuter), which we are studying within the project ApPLAuSE.
Protein pattern analysis in tolerant and susceptible wheat cultivars under salinity stress conditions
Authors: KHALILI Marouf , NAGHAVI Mohammad Reza , YOUSEFZADEH Said
Published: April 2019

To investigate proteome pattern of wheat cultivars, young leaves were collected from tillering stage of seedlings two weeks after development of the salinity stress. The extraction of proteins from leaf tissue was done and two dimensional electrophoresis using IPG strips and SDS-PAGE in the control and salinity treatments were performed. In total, 198 and 203 protein spots were identified in tolerant (‘Moghan3’) and susceptible (‘Pishtaz’) cultivars respectively. Also, among these, spots number 21 and 22 were detected with significant IF in ‘Moghan3’ and ‘Pishtaz’ respectively. Two-stage mass spectrometry (MS/MS) was used to identify protein spots. Common identified proteins, including proteins involved in removal of oxidants, Calvin cycle proteins, proteins involved in light reaction of photosynthesis and proton transfer, and heat shock protein were identified on basis of the functional groups and their frequency. In total, ‘Moghan3’ maintained the stability of the structure and performance of carbon metabolism under stress better than susceptible cultivar. In addition, defense against oxidative stress induced by salinity stress was performed by 2-cys peroxiredoxin BAS1 and Cu-Zn SOD proteins that tolerant cultivar defended against oxidative stress better than the susceptible cultivar. The greatest strength of ‘Moghan3’ and major weakness in ‘Pishtaz’ are relying on the unique proteins formed under salinity stress for the removal of oxidants and to maintain the activity of the photosynthetic light reactions, respectively.
Heat waves analysis and the heat load of agricultural workers during the heat waves in 2017 (using index WBGT)
Authors: POGAČAR Tjaša , KAJFEŽ BOGATAJ Lučka , ČREPINŠEK Zalika
Published: April 2019

Workers in agriculture are regularly exposed to heat stress during summer, which can affect reduced labour productivity and income losses. Air temperatures in Slovenia have been rising in recent decades, and climate change projections show that this trend will continue along with an increase in the number of days with heat stress risk. Changes in the number of heat waves in central and south-western Slovenia for the period 1961–2017 were analysed as well as the risk of the heat stress for workers during heat waves in the year 2017. The heat wave occurs if the temperature threshold for the average daily temperature is reached or exceeded on at least three consecutive days, with the threshold for the mild continental climate (Ljubljana) 24 °C and the mild Submediterranean climate (Bilje) 25 °C. The WBGT (Wet Bulb Globe Temperature) index, assessing the risk of heat stress, was calculated from relative humidity and air temperatures. At both locations, the number of days in heat waves increased as well as their intensity, average daily air temperatures were significantly higher than in the first half of the considered period. The time span, in which the heat waves occur, also extended, as until 1990 they did not appear in early June and late August, as in recent years. The calculated values of the WBGT show that for most days in the heat waves in 2017 in Ljubljana and Bilje, the WBGT 23 °C threshold was exceeded practically all day, which shows a high level of heat stress risk for physically intense work. In the case of exceeded WBGT reference values, employers or farmers themselves should take actions to reduce the risk of heat stress.
Influence of soil cultivation depth on energy consumption and on preparation of seed bed using rotary harrow before maize planting
Authors: BERNIK Rajko , VUČAJNK Filip
Published: April 2019

In 2012 on the Laboratory Field of Biotechnical Faculty the field trial was carried out, trying to establish the influence of the soil cultivation on the fuel consumption, on the physical-mechanical soil properties of the seed bed and at the end on the field emergence of maize. A rotary harrow was used for soil preparation just before maize planting and it was adjusted to the soil cultivation depths of 5 cm, 10 cm and 15 cm. The trial was designed as random blocks. A tractor with stepless transmission and nominal power of 73 kW and a rotary harrow with working width of 2.5 m were used. The speed of soil cultivation was 5.0 km h-1 on the tractometer and the engine rotational frequency was 1900 rpm. The fuel consumption per hour, the fuel consumption per hectare and the energy consumption per hectare increased by increasing the adjusted soil depth cultivation from 5 cm to 15 cm using the rotary harrow. At the adjusted soil cultivation depth of 10 and 15 cm cm, the vertical soil resistance at depths between 8 and 13 cm was lower than at the adjusted soil depths of 5 cm. No significant differences were found regarding the soil physical properties in the seed bed and the field emergence of maize among three adjusted soil cultivation depths. The soil cultivation depth of 10 cm proved to be the most appropriate in view of the fuel consumption, energy consumption as well as the physical-mechanical soil properties of the seed bed and plant emergence.
The effect of weed frequency in the overall alfalfa (Medicago sativa L.) productivity, case study from Kosovo
Authors: SHERIFI Enver , BERISHA Naim
Published: April 2019

Alfalfa (Medicago sativa L.) represents an important leguminous forage crop in farming as well as in systems of animal husbandry. It is known for its wide usage for grazing, hay, silage as well as in the form of green manure and cover crop. Our study aims to assess the influence of weeds on quality and quantity of three different aged alfalfa plots. A list of registered weed plant species divided by harvesting periods on each of the surveyed plots is offered. The biomass productivity and its correlation to the effects of artificial fertilizers, alfalfa age and the frequency of weeds are provided. We concluded that using mineral fertilizers in a controlled manner will help to reduce considerably the amount of weeds and also that alfalfa crops will be best to be replaced after four years as its productivity will start afterwards to drop sharply, whereas the number and frequency of weeds will increase conversely.
Health insurance coverage and health care utilization: Evidence from the Affordable Care Act’s dependent coverage mandate
Authors: Yörük Barış K.
Published: April 2019

This paper investigates the impact of the Affordable Care Act’s (ACA’s) dependent coverage mandate on health insurance coverage rates and health care utilization among young adults. Using data from the Medical Panel Expenditure Survey, I exploit the discontinuity in health insurance coverage rates at age 26, the new dependent coverage age cutoff enforced by the ACA. Under alternative regression discontinuity design models, I find that 2.5 to 5.3 percent of young adults lose their health insurance coverage once they turn 26. This effect is mainly driven by those who lose their private health insurance plan coverage and those who lose their health insurance plan coverage, whose main holder resides outside of the household. I also find that the discrete change in health insurance coverage rates at age 26 is associated with up to a 3.6 percentage point decrease in office-based physician and and up to a 2.1 percentage point decrease in dental visits, but does not have a significant impact on the utilization of outpatient or emergency department services. Furthermore, the effects of the ACA’s dependent coverage mandate on health care spending and out-of-pocket costs are insignificant. These results are robust under alternative model specifications.
Application of Digitization Procedures of Production in Practice
Authors: Sujová Erika , Čierna Helena , Żabińska Iwona
Published: April 2019

The paper addresses application of digitazation of production processes, which is part of organizational digitization, also known as Industry 4.0. It deals with modernization and optimization of production systems by creating models in simulation software via digital engineering. For our analysis, 8 real assembly lines were used, with an average of 15 workplaces, which were integrated into one universal line by means of simulation. The aim of our research was to create a digital twin of the real assambly lien and to analyse effectiveness of the proposed modernization universal assembly line using the generated statistical data.
Logistics Maturity Model for Engineering Management – Method Proposal
Authors: Werner-Lewandowska Karolina , Kosacka-Olejnik Monika
Published: April 2019

The objective of the paper is to present results of research carried out on the development of a logistics maturity model for enterprises. The proposed approach allows for companies to self-assess their level of advancement of logistics processes implementation with the use of logistics maturity model. Considering the results of the assessment, directions for further actions may be determined. The proposed model comprises three dimensions: SCOR model, phases of the industry logistics and logistics tools, what makes it original approach in the field of logistics maturity research. Moreover, the model described in the paper is dedicated for service industry, which is in research niche. The current state of research on maturity models is reviewed to serve as a basis for the model developed in the paper. There are inlcuded theoretical assumptions of the proposed logistics maturity model and presentation of the model’s concept, considering directions for future research on the specified issue.
Energy Characteristics of Asynchronous Electric Drive
Authors: German-Galkin Sergiej , Sakharov Vladimir , Tarnapowicz Dariusz
Published: April 2019

Energy aspects are fundamental to the design of electric drive systems. This article describes energy performance for asynchronous electric drives based on various control methods. These electric drives comparison shows that vector control methods have a significant advantage over scalar control methods. The asynchronous electric drive mathematical description is based on vector control theory and main component method. Equations, obtained by mathematical description, allow calculating of the currents, voltages and electric power at the output when the electromagnetic torque and speed machine are set. Energy characteristics of the asynchronous drive were obtained with the use of the MATLAB-SIMULINK simulation program.
An Exploratory Journey of Cultural Visual Literacy of “Non-Conforming” Gender Representations from Pre-Colonial Sub- Saharan Africa
Authors: Mehra Bharat , Lemieux Paul A. , Stophel Keri
Published: April 2019

This article is an exploratory journey of cultural visual literacy of “non-conforming” gender representations from pre-colonial Sub-Saharan Africa. It provides select research-based visual evidence of “non-conforming” genders and sexual orientations in traditional cultures of Sub-Saharan Africa as represented in its popular press, scholarly literature, and government and United Nations publications, amongst other sources. These have been selectively described in the context of key cultural themes that include (alphabetically listed): art, folklore, gender behavior, language, marriage, religion, and, sexual activity. The article provides a glimpse of data that were collected during a collaborative project selected by the University of Tennessee’s Howard H. Baker Jr. Center for Public Policy to partner in the U.S. Department of State’s Diplomacy Lab program of engaged scholarship involving two information science graduate students and a faculty member. A few insights from the exploratory journey of the cultural visual literacy of “non-conforming” gender representations are also reported.
Mathematical modeling of multicomponent catalytic processes of petroleum refining and petrochemistry
Authors: Ivanchina Emiliya D. , Ivashkina Elena N. , Dolganova Irena O. , Belinskaya Nataliya S.
Published: April 2019

This review summarizes Russian developments on the most important industrial processes of hydrocarbon feedstock refining according to the data of the last 15–20 years on the kinetics of deactivation of heterogeneous and liquid-phase catalysts under non-stationary conditions. The methodological aspects of the creation and application of kinetic models for the deactivation of heterogeneous and liquid-phase catalysts under non-stationary conditions are considered. It is shown that high efficiency of catalytic technologies is ensured by regulation of hydrodynamic and thermal conditions of industrial processes of gasoline reforming, alkane dehydrogenation, alkylation of benzene with higher alkenes and catalytic dewaxing using kinetic models, which take into account catalyst deactivation.
Penčo Slavejkovs „Arbeit in der Gegenwart“
Authors: Danova Sirma
Published: April 2019

This article focuses on Pencho Slaveykov’s concept of “work in the present,” which forms the core of his definition of modernity, blending together literature and social experience. Slaveykov’s literary project and author persona are viewed in the broader context of aesthetic modernity. The Bulgarian modernist is a cultural engineer pushing the idea of a differentiation of cultural and artistic spheres. His goal is to autonomize literature after the utilitarian imperatives of the Bulgarian National Revival. The author simultaneously embodies a Balkan ‘crank’ and a German conceptualist. Slaveykov’s work not only demonstrates that modernism has broken with the past, but also constructs an alternative cultural memory shaped in the generic modes of the epic, the lyric, and the anthology. The author entitles himself with the power to be a guardian of cultural memory. Pencho Slaveykov’s conceptualizations envisage the creation of the author as an institution pivotal for the construction of a national literature.
New therapeutic approaches in the treatment of low back pain
Authors: Neculăeș Marius , Lucaci Paul
Published: April 2019

Medical recovery practices have welcomed more and more patients complaining about moderate or intense low back pain.

Aim: This paper aims to demonstrate the efficiency of successive magnetic induction therapy on low back pain syndrome. We assume that the use of successive magnetic induction in the treatment of patients with low back pain will reduce significantly the pain manifestations at this level.

Methods: The study was conducted on 30 patients who displayed important low back pain and decreased lumbar spine mobility. The therapy applied – super inductive system – reduced significantly the pain threshold of these patients and improved the lumbar spine mobility, implicitly.

Results: In order to highlight the results, we interpreted graphically the values of the initial and final testing using the Microsoft Office Excel. There is no doubt that the mobility of the lumbar spine of patients improved considerably, some patients reported that their pain disappeared altogether, while others reported only a mild discomfort.

Conclusion: This study stands to highlight the efficiency of the Super Inductive System, a fact confirmed by the comparison between initial and final results.
Motor skill development for children between the ages of 6 to 8 as a result of finishing an initiation level swimming course
Authors: Pîrjol Dan Ionuț , Răsădean Marcel , Baniaș Petre
Published: April 2019

Introduction: Swimming, as an activity, covers many of the basic humanistic needs by creating a state of wellbeing as well as help form a holistic person by developing their motor skills, cognition and affection through the stresses of training for competition or just by practicing for recreational purposes. Various scientific studies show the importance of the motor skill component when selecting those fit for competitive swimming. Additionally, there are other studies that demonstrate that swimming can have an anthropometric effect over the body. The purpose of our study was to test if an initiation level swimming course would produce a development of basic motor skills in children between the ages of 6 to 8.

Methodology and Participants: for this study we recruited 10 participants out of which 5 were girls and the remaining 5 were boys. Their age (7,1±0,73) is between 6 and 8 where two of the children are 6 years of age, five are 7 years of age and the last three are 8 years of age. In order to conduct the study, we employed a set of tests that rely on 7 events extracted from the stock of EUROFIT tests.

Results: the final results show that the participants have improved their performances with strong statistical significance.

Conclusions: Undergoing an initiation level swimming course results in a noticeable development of motor skills as well as from the homogeneity of the group, which is considerably improved at final testing.
The incidence of spine deficiencies among disabled students with intellectual disabilities from special education system in Bucharest
Authors: Șuță Vicol Eduard , Tătaru Tiberiu , Șuță Lizia Ioana , Vasile Marinela
Published: April 2019

The aim of the research was to emphasize the incidence of spine deficiencies in students with intellectual disabilities involved in the recovery program within the kinetotherapy classes carried out in special schools in Bucharest.

We wanted to point out that among the two categories of children with disabilities enrolled in special education from Bucharest (children with mild / moderate intellectual disabilities and children with serious / severe / profound intellectual disabilities) there are no statistical differences related to the incidence of spine deficiencies.

Research sample consisted of students enrolled in special education from 11 schools. Thus there were formed two groups of students: students with mild / moderate intellectual disabilities and children with serious / severe / profound intellectual disabilities. Another criterion for forming working groups was the school level. Thus, each category was divided into subjects enrolled in primary education and subjects enrolled in secondary education.

The comparison made between the groups revealed that in terms of the incidence of spine deficiencies there is correlation between the type of physical deficiency and the degree of disability.
The effect of physical effort on the psychological dimensions in the case of former athletes
Authors: Chirazi Marin , Șubredu Irina
Published: April 2019

Starting from the theoretical assumptions regarding the fact that the sustained physical effort had repercussions on the mental dimensions and starting from the findings that I came across in practice regarding the fact that the mental state of the athletes varied in time during an endurance test, the aim of the present research was to investigate the effect of stress caused by sustained physical effort specific to endurance tests on the psychological dimensions – in the case of former athletes. The attaining of the set goal was observed through a small scale experimental study case (two subjects of different age). They were involved in an endeavour for establishing a record for sailing the Danube in recreational kayaks provided with space for luggage; random accommodation. During that expedition, a series of mental characteristics of the participants were measured: emotional stability, anxiety level and degree of optimism. The research pointed out the different adaptive capacity of each individual, regardless of age, experience and personality.
Postural balance and 7-meter throw’s accuracy in handball
Authors: Gomboș Leon , Gherman Alexandru Andrei , Pătrașcu Adrian , Radu Paul
Published: April 2019

This study aims to identify if there is a relation between postural balance and the accuracy of 7 meters throws in handball. There is an increase need to improve the success of the 7 meters throw, due to its impact regarding a win or loss over the past years during high-end competitions. Subjects: 173 subjects were involved in this study, 123 males and 50 females with the ages between 18 and 21 years old. Materials: We’ve conducted the balance test using the AMTI NETforce BP 400600 force platform and for the accuracy test we’ve conducted a shooting trial that quantified the spread of a series of throws from the 7 meters mark. We’ve observed the radial dislocation, area and length of the center of pressure for the balance test and for the shooting trial we’ve measured the distance of the throw from a preset spot. Results: There were no correlation between the important factors of balance like Dislocation, Area, Length, and throwing percentage for the Circle, Area 1, Area 2, Missed balls. Instead, between the 3 important factors of balance, there are strong and positive correlations, drawing the conclusion that when we have big numbers for center of gravity deviations, total trajectory (cm2) and the area values, the chances to score a goal from 7 meters are lower. Conclusions: The results of the study confirm the hypothesis. The objectives for a future study is to find ways/methods to improve the general balance, in order to increase the efficiency for the 7 meters throwing.
The time for physical exercise and food habits on anumber of students from Pascani National College
Authors: Albu Adriana , Onose Ionuţ , Hodorcă Raluca Mihaela , Moraru Cristina-Elena
Published: April 2019

Nutrition and physical activity are external factors that contributes to the health of young people.Eating too abundant and a short time allocated to physical activity are risk factors for obesity.

Material and Methods: The study was conducted on a group of 79 pupils from the 9th, 10th and 11th grade. To this it was considered the time allotted daily to physical activity (less than 15 min, 15 - 45 minutes, 45 minutes) and were evaluated with a habitsquestionnaire of consumption frequency.Final evaluation will be made separately by class.

Results and Discussion: In most cases young allocate exercise between 15-45 minutes/day (58.22%).Calculated differences are not statistically significant (p> 0.05, fl = 4, χ2 = 7.390) and highlights the lack of concern for the physical activity of the students. Dominant contribution of milk and cheese is just 2-3 times/week and is totally insufficient and potatoes all 2-3 times/week.Instead sweets are consumed 4-7 times/week (64.55%), by two thirds of the young people surveyed. Conclusions: they eat more sweets and do insufficient sport so there are favorable conditions for obesity in the adolescents from the study group.
The relationship between the frequency of physical and sports activities and the body image
Authors: Pop Gabriela Maria , Pop Horea
Published: April 2019

This research aims at highlighting the level of body image perception in Babeş-Bolyai University students in Cluj-Napoca depending on the frequency of practicing physical activities. For this study, 465 questionnaires were applied to students from 13 faculties. The respondents' age was between 18 and 40 years old, most of them ages 19-21. For the statistical data processing, the statistical analysis program SPSS 20 was used and the graphical representations were made using the Microsoft EXCELL 2007 version. To quantify the body image, we used the modified Offer Scale [4]: I kept the first 4 items from the original 5-item scale. The value of the coefficient F = 3,292 at a significance threshold p = 0.038 shows that there is a significant difference between the average scores of body perception based on the frequent or rare of the practicing of physical and sports activities. Reported to the entire sample, it follows that more frequent sports activities determine a more positive body image.