scholarly journals Producer Exploration can Generate Categories without Audiences

2017 ◽  
Author(s):  
Anthony Vashevko
Keyword(s):  
Category Theory ◽  
Formal Model ◽  
Search Process ◽  
Limited Information ◽  
Cross Sectional ◽  
Exploration Process ◽  
High Performing ◽  
Specific Category ◽  
The World ◽  
Single Category

Category theory argues that markets function as an interface between producer candidates and audiences that evaluate those candidates. Audiences lump similar producer into categories in order to facilitate their search process, so that producers who do not fit into one specific category -- or who span multiple categories -- are penalized relative to their single category peers. I present an alternative model of the world in which producers in a market segregate into categories but without any reliance on an audience process: instead categorical boundaries reflect producers' best efforts to explore a complicated marketplace given their limited information about what audiences demand. Categories emerge as a cross-sectional consequence of a dynamic exploration process: At any given time, the world features a mix of high-performing producers within categorical clusters and low-performing producers outside or between them. But spanning positions are more likely to be occupied by entrepreneurial producers, and future categorical clusters emerge from their efforts to explore the terrain. As such any apparent category spanning discount is nothing more than the consequence of bad luck in the process of taking risk. I establish this result in a formal model and illustrate in simulations.

EMPLOYEE RETENTION IN A HIGHER EDUCATION INSTITUTION: AN ORGANISATIONAL DEVELOPMENT PERSPECTIVE

2015 ◽  
Vol 37 (2) ◽  
pp. 33-63 ◽  
Author(s):  
B J Erasmus ◽  
A Grobler ◽  
M Van Niekerk
Keyword(s):  
Higher Education ◽  
Employee Turnover ◽  
Intent To Stay ◽  
Education Institution ◽  
Cross Sectional Study ◽  
Highly Qualified ◽  
Cross Sectional ◽  
High Performing ◽  
Organisational Climate ◽  
Talent Retention

Talent retention and employee turnover are major concerns for higher education institutions (HEIs) because they are losing highly qualified staff to the private sector and to other HEIs that are able to offer better rewards and benefits. The turnover of talented staff is therefore a major concern for the institution under investigation. The retention and voluntary turnover decisions among a workforce of 4 651 employees was thus investigated. A quantitative cross-sectional study was conducted by means of the objective analysis of organisational data in combination with the structured questionnaire (organisational climate survey). Descriptive and inferential statistics were applied to analyse the data across demographic groups, including age, employment category (academic as well as professional and support), etc. The results indicated that the institution’s turnover rate was acceptable (4.34%) and that dysfunctional turnover was marginal because employees with below-standard performance ratings had voluntarily resigned. Positive correlations and significant beta (b) values were reported between Organisational citizenship, Leadership, My manager and Compensation and the employees’ intent to stay in or to leave the organisation. These organisational climate factors were found to explain approximately 30 per cent of the variance in the employees’ intent to stay in or to leave the organisation. The article recommends that a talent retention tool be developed. In addition, it contributes to the literature on retention and turnover of high-performing employees, as it underscores the importance of measuring employee turnover

HUBUNGAN ANTARA PENDIDIKAN DAN STATUS EKONOMI IBU DENGAN KEJADIAN DIARE PADA BALITA DI PUSKESMAS SEKIP PALEMBANG TAHUN 2014

2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Wulan Citra Sari Wulan Citra Sari
Keyword(s):  
Economic Status ◽  
Chi Square ◽  
Cross Sectional ◽  
Diarrhea Case ◽  
The World ◽  
Diarrhea Disease ◽  
United Nation ◽  
Research Show ◽  
Improve Health ◽  
Children Under 5

  ABSTRACT Diarrhea is cause the number one of a death in the world. The united Nation Children’s Found (UNICEF) thinks about every 30 second there one a child die because diarrhea. Diarrhea disease still be a problem for society healthy in Indonesia well reviewed of morbidity and mortality ant the mark of deaths and “Kejadian Luar Biasa (KLB)” that caused. Accrodin to WHO the mark of diarrhea illness 2010 is 411 patients per 1.000 population. The digit of death diarrhea is 14% from the digit of death over all. The purpose of this research to know a connection between education and mother economic status with toodler (children under 5 years old) diarrhea case at Puskesmas Sekip Palembang in February 2014. Desaign of this research to survey analitic by do coloser Cross Sectional in Accidental Sampling tehnic which one the variable who get research, include education and mothers economic status. The sampel in this research in 33 mothers who come by bring their toodler to MTBS Puskesmas Sekip Palembang at February 2014. Each variabel who get research, then get analysis by use analysis Chi-Square by decisios X² table (3,481). The result of this research show that the respondent by diarrhea as many is 15 respondent (45,5%) and didn’t diarrhea 18 respondent (54,5%). This of high education 13 repondent (39,4%) and less education is many as 20 respondent (60,6%), the respondent based to the high economic status as many as 13 respondent (39,4%). From statistic test Chi-Square show that, there a connection between education  with diarrhea case in X² count = 4,313, and there a connection between mothers economic status with case diarrhea at X² count= 4,917. From the results of this study are expected to further improve health education, especially regarding the incidence of diarrhea in infants to mothers who have young children understand more about the incidence of diarrhea.     ABSTRAK Diare adalah penyebab nomor satu kematian di dunia. The United Nations Children’s Fund (UNICEF) memperkirakan bahwa setiap 30 detik ada anak meninggal karena diare. Penyakit diare masih merupakan masalah kesehatan masyarakat di Indonesia baik ditinjau dari angka kesakitan dan angka kematian serta kejadian luar biasa (KLB) yang ditimbulkan. MenurutWHO angka kesakitan diare pada tahun 2010 yaitu 411 penderita per 1000 penduduk. Angka kematian diare 14% dari angka kematian balita secara keseluruhan. Tujuan penelitian ini untuk mengetahui hubungan antara pendidikan dan status ekonomi ibu dengan kejadian diare pada balita di Puskesmas SekipPalembang pada bulan Februari Tahun 2014. Desain penelitian ini adalah survey analitik dengan pendekatan Cross Sectional dalam teknik Accidental Sampling dimana variableyang diteliti meliputi pendidikan dan status ekonomi ibu. Sampel pada penelitian ini adalah 33ibu yang datang membawa anak balitanya berobat ke MTBS puskesmas Sekip Palembang pada bulan FebruariTahun 2014. Masing-masing variabel yang diteliti kemudian dianalisa dengan menggunakan analisis Chi-Square dengan ketetapan X² Tabel (3,481). Hasil penelitian ini menunjukan bahwa responden dengan diare sebanyak 15 responden (45,5%) dan tidak diare 18 responden (54,5%), responden berdasarkan pendidikan tinggisebanyak 13responden (39,4%) dan pendidikan rendah sebanyak 20 responden (60,6%), responden berdasarkan status ekonomi tinggi sebanyak 20 responden (60,6%) dan yang status ekonomi rendah sebanyak 13 responden (39,4%). Dari uji statistik Chi-Square menunjukkan ada hubungan antara pendidikan dengan kejadian diare pada X²hitung= 4,313, dan ada hubungan antara status ekonomi ibu dengan kejadian diare pada X²hitung= 4,917. Dari hasil penelitian ini diharapkan agar lebih meningkatkan penyuluhan kesehatan khususnya tentang kejadian diare pada balita agar ibu yang mempunyai balita lebih memahami tentang kejadian diare.  

Psychological Impacts of COVID-19 During the First Nationwide Lockdown in Vietnam: Web-Based, Cross-Sectional Survey Study (Preprint)

2020 ◽  
Author(s):  
Khanh Ngoc Cong Duong ◽  
Tien Nguyen Le Bao ◽  
Phuong Thi Lan Nguyen ◽  
Thanh Vo Van ◽  
Toi Phung Lam ◽  
...  
Keyword(s):  
Psychological Distress ◽  
General Population ◽  
Psychological Health ◽  
Online Survey ◽  
Survey Study ◽  
Limited Information ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Event Scale ◽  
The Impact

BACKGROUND The first nationwide lockdown due to the COVID-19 pandemic was implemented in Vietnam from April 1 to 15, 2020. Nevertheless, there has been limited information on the impact of COVID-19 on the psychological health of the public. OBJECTIVE This study aimed to estimate the prevalence of psychological issues and identify the factors associated with the psychological impact of COVID-19 during the first nationwide lockdown among the general population in Vietnam. METHODS We employed a cross-sectional study design with convenience sampling. A self-administered, online survey was used to collect data and assess psychological distress, depression, anxiety, and stress of participants from April 10 to 15, 2020. The Impact of Event Scale-Revised (IES-R) and the Depression, Anxiety, and Stress Scale-21 (DASS-21) were utilized to assess psychological distress, depression, anxiety, and stress of participants during social distancing due to COVID-19. Associations across factors were explored using regression analysis. RESULTS A total of 1385 respondents completed the survey. Of this, 35.9% (n=497) experienced psychological distress, as well as depression (n=325, 23.5%), anxiety (n=195, 14.1%), and stress (n=309, 22.3%). Respondents who evaluated their physical health as average had a higher IES-R score (beta coefficient [B]=9.16, 95% CI 6.43 to 11.89), as well as higher depression (B=5.85, 95% CI 4.49 to 7.21), anxiety (B=3.64, 95% CI 2.64 to 4.63), and stress (B=5.19, 95% CI 3.83 to 6.56) scores for DASS-21 than those who rated their health as good or very good. Those who self-reported their health as bad or very bad experienced more severe depression (B=9.57, 95% CI 4.54 to 14.59), anxiety (B=7.24, 95% CI 3.55 to 10.9), and stress (B=10.60, 95% CI 5.56 to 15.65). Unemployment was more likely to be associated with depression (B=3.34, 95% CI 1.68 to 5.01) and stress (B=2.34, 95% CI 0.84 to 3.85). Regarding worries about COVID-19, more than half (n=755, 54.5%) expressed concern for their children aged <18 years, which increased their IES-R score (B=7.81, 95% CI 4.98 to 10.64) and DASS-21 stress score (B=1.75, 95% CI 0.27 to 3.24). The majority of respondents (n=1335, 96.4%) were confident about their doctor’s expertise in terms of COVID-19 diagnosis and treatment, which was positively associated with less distress caused by the outbreak (B=–7.84, 95% CI –14.58 to –1.11). CONCLUSIONS The findings highlight the effect of COVID-19 on mental health during the nationwide lockdown among the general population in Vietnam. The study provides useful evidence for policy decision makers to develop and implement interventions to mitigate these impacts. CLINICALTRIAL

scholarly journals Psychological impact in the time of COVID-19: A cross-sectional population survey study during confinement

2021 ◽  
pp. 135910532098558
Author(s):  
Carmina Castellano-Tejedor ◽  
María Torres-Serrano ◽  
Andrés Cencerrado
Keyword(s):  
Chronic Conditions ◽  
Population Survey ◽  
Psychological Impact ◽  
Survey Study ◽  
Psychological Interventions ◽  
Community Based ◽  
Cross Sectional ◽  
Young Females ◽  
The World ◽  
The Impact

The transformation that COVID-19 has brought upon the world is unparalleled. The impact on mental health is equally unprecedented and yet unexplored in depth. An online-based survey was administered to 413 community-based adults during COVID-19 confinement to explore psychological impact and identify high risk profiles. Young females concerned about the future, expressing high COVID-related distress, already following psychological therapy and suffering from pre-existing chronic conditions, were those at highest risk of psychological impact due to the COVID-19 situation. Findings could be employed to design tailored psychological interventions in the early stages of the outbreak to avoid the onset/exacerbation of psychopathology.

scholarly journals The impact of the COVID-19 pandemic on socio-economic and sustainability

2021 ◽  
Author(s):  
Xueli Wei ◽  
Lijing Li ◽  
Fan Zhang
Keyword(s):  
World Economy ◽  
Social Economy ◽  
Secondary Data ◽  
Well Being ◽  
Cross Sectional ◽  
The Social ◽  
The World ◽  
The Status ◽  
Sectional Analysis ◽  
The Impact

Pumping elephantThe COVID-19 pandemic has adversely affected the lives of people around the world in millions of ways . Due to this severe epidemic, all countries in the world have been affected by all aspects, mainly economic. It is widely discussed that the COVID-19 outbreak has affected the world economy. When considering this dimension, this study aims to examine the impact of the COVID-19 pandemic on the world economy, socio-economics, and sustainability. In addition, the research focuses on multiple aspects of social well-being during the pandemic, such as employment, poverty, the status of women, food security, and global trade. To this end, the study used time series and cross-sectional analysis of the data. The second-hand data used in this study comes from the websites of major international organizations. From the analysis of secondary data, the conclusion of this article is that the impact of the pandemic is huge. The main finding of the thesis is that the social economy is affected by the pandemic, causing huge losses in terms of economic well-being and social capital.

scholarly journals A Call for a Reform of the Influenza Immunization Program in Mexico: Epidemiologic and Economic Evidence for Decision Making

Vaccines ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 286
Author(s):  
Roberto Tapia-Conyer ◽  
Miguel Betancourt-Cravioto ◽  
Alejandra Montoya ◽  
Jorge Abelardo Falcón-Lezama ◽  
Myrna María Alfaro-Cortes ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Influenza Vaccination ◽  
Vaccination Coverage ◽  
Decision Analytic Model ◽  
Limited Information ◽  
Vaccination Policy ◽  
Cross Sectional ◽  
Influenza Case ◽  
One Year ◽  
Effectiveness Studies

Limited information is available to determine the effectiveness of Mexico’s national influenza vaccination guidelines and inform policy updates. We aim to propose reforms to current influenza vaccination policies based on our analysis of cost-effectiveness studies. This cross-sectional epidemiological study used influenza case, death, discharge and hospitalization data from several influenza seasons and applied a one-year decision-analytic model to assess cost-effectiveness. The primary health outcome was influenza cases avoided; secondary health outcomes were influenza-related events associated with case reduction. By increasing vaccination coverage to 75% in the population aged 12–49 years with risk factors (diabetes, high blood pressure, morbid obesity, chronic renal failure, asthma, pregnancy), and expanding universal vaccination coverage to school-aged children (5–11 years) and adults aged 50–59 years, 7142–671,461 influenza cases; 1–15 deaths; 7615–262,812 healthcare visits; 2886–154,143 emergency room admissions and 2891–97,637 hospitalizations could be prevented (ranges correspond to separate age and risk factor groups), with a net annual savings of 3.90 to 111.99 million USD. Such changes to the current vaccination policy could potentially result in significant economic and health benefits. These data could be used to inform the revision of a vaccination policy in Mexico with substantial social value.

scholarly journals A cross-sectional study reporting concussion exposure, assessment and management in Western Australian general practice

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Elizabeth Thomas ◽  
HuiJun Chih ◽  
Belinda Gabbe ◽  
Melinda Fitzgerald ◽  
Gill Cowen
Keyword(s):  
General Practice ◽  
Cross Sectional Study ◽  
Limited Information ◽  
Sectional Study ◽  
Cross Sectional ◽  
Usual Practice ◽  
Exact Test ◽  
Concussion Management ◽  
Practice Knowledge ◽  
Western Australian

Abstract Background General Practitioners (GPs) may be called upon to assess patients who have sustained a concussion despite limited information being available at this assessment. Information relating to how concussion is actually being assessed and managed in General Practice is scarce. This study aimed to identify characteristics of current Western Australian (WA) GP exposure to patients with concussion, factors associated with GPs’ knowledge of concussion, confidence of GPs in diagnosing and managing patients with concussion, typical referral practices and familiarity of GPs with guidelines. Methods In this cross-sectional study, GPs in WA were recruited via the RACGP WA newsletter and shareGP and the consented GPs completed an electronic survey. Associations were performed using Chi-squared tests or Fisher’s Exact test. Results Sixty-six GPs in WA responded to the survey (response rate = 1.7%). Demographics, usual practice, knowledge, confidence, identification of prolonged recovery as well as guideline and resource awareness of GPs who practised in regional and metropolitan areas were comparable (p > 0.05). Characteristics of GPs were similar between those who identified all symptoms of concussion and distractors correctly and those who did not (p > 0.05). However, 84% of the respondents who had never heard of concussion guidelines were less likely to answer all symptoms and distractors correctly (p = 0.039). Whilst 78% of the GPs who were confident in their diagnoses had heard of guidelines (p = 0.029), confidence in managing concussion was not significantly associated with GPs exposure to guidelines. It should be noted that none of the respondents correctly identified signs of concussion and excluded the distractors. Conclusions Knowledge surrounding concussion guidelines, diagnosis and management varied across GPs in WA. Promotion of available concussion guidelines may assist GPs who lack confidence in making a diagnosis. The lack of association between GPs exposure to guidelines and confidence managing concussion highlights that concussion management may be an area where GPs could benefit from additional education and support.

scholarly journals School Choice During a Period of Radical School Reform. Evidence from Academy Conversion in England

2020 ◽  
Author(s):  
Marco Bertoni ◽  
Stephen Gibbons ◽  
Olmo Silva
Keyword(s):  
School Choice ◽  
Large Scale ◽  
English Education ◽  
Limited Information ◽  
State Control ◽  
High Performing ◽  
Opt Out ◽  
Improved Performance ◽  
Expected Benefits ◽  
State Schools

Abstract We study how demand responds to the rebranding of existing state schools as autonomous ‘academies’ in the context of a radical and large-scale reform to the English education system. The academy programme encouraged schools to opt out of local state control and funding, but provided parents and students with limited information on the expected benefits. We use administrative data on school applications for three cohorts of students to estimate whether this rebranding changes schools’ relative popularity. We find that families – particularly higher-income, White British – are more likely to rank converted schools above non-converted schools on their applications. We also find that it is mainly schools that are high-performing, popular and proximate to families’ homes that attract extra demand after conversion. Overall, the patterns we document suggest that families read academy conversion as a signal of future quality gains – although this signal is in part misleading as we find limited evidence that conversion causes improved performance.

scholarly journals Navigating the factor zoo around the world: an institutional investor perspective

2021 ◽  
Author(s):  
Söhnke M. Bartram ◽  
Harald Lohre ◽  
Peter F. Pope ◽  
Ananthalakshmi Ranganathan
Keyword(s):  
Stock Return ◽  
Institutional Investor ◽  
Return Predictability ◽  
Investment Strategies ◽  
Fixed Income ◽  
Stock Return Predictability ◽  
Cross Sectional ◽  
The World ◽  
Cast Doubt ◽  
Asset Classes

AbstractThe literature on cross-sectional stock return predictability has documented over 450 factors. We take the perspective of an institutional investor and navigate this zoo of factors by focusing on the evidence relevant to the practicalities of factor-based investment strategies. Establishing a sound theoretical rationale is key to identifying “true” factors, and we emphasize the need to recognize data-mining concerns that may cast doubt on the relevance of many factors. From a practical investment perspective, much of the factor evidence documented by academics may be more apparent than real. The performance of many factors is dependent on the inclusion of small- and micro-cap stocks in academic studies, although such stocks would likely be excluded from the real investment universe due to illiquidity and transaction costs. Nevertheless, a parsimonious set of factors emerges in equities and other asset classes, including currencies, fixed income, and commodities. These factors can serve as meaningful ingredients to factor-based portfolio construction.

TRIPLOID APPLE VARIETIES OF SUMMER RIPENING SELECTION VNIISPK ON CLONAL ROOTSTOCK 54-118

1970 ◽  
pp. 34-36
Author(s):  
А. M. Galasheva ◽  
Е. N. Sedov
Keyword(s):  
Tree Height ◽  
Projection Area ◽  
Cross Sectional ◽  
Crown Width ◽  
Crown Volume ◽  
The World ◽  
Apple Cultivars ◽  
Crown Projection Area ◽  
Academy Of Sciences ◽  
First Time

For the first time in the world and in Russia, Academician of the Russian Academy of Sciences, breeder Evgeny Nikolaevich Sedov created a series of triploid apple cultivars from intervalent crosses 2х × 4х. Triploid apple cultivars bear fruit more regularly, have higher self-fruitfulness and have fruits of high marketability. The article presents data on the study of triploid apple cultivars of the summer ripening period of the VNIISPK breeding - Augusta, Daryona, Maslovskoye, Osipovskoye, Zhilinskoye, Spasskoye and Yablochny Spas as well as the control Canadian cultivar Melba on a semi-dwarf clone rootstock 54-118. Maslovskoye, Zhilinskoye, Spasskoye and Yablochny Spas have immunity to scab. The orchard was planted in 2014, the garden planting scheme was 5 x 2 m. The indicators of the growth force (tree height, crown width and stem diameter) and the yield of trees were studied. At the age of six, the trees of triploid cultivars reached a height of 2.2 m (Maslovskoye) to 3.0 m (Yablochny Spas) on a semi-dwarf rootstock 54-118. The highest indicators of crown volume (3.3-5.3 m3), crown projection area (4.2-5.3 m2) and the cross-sectional area of the stem (46.5-52.8 cm2) were in Osipovskoye, Yablochny Spas, Zhilinskoye and Spasskoye. The highest yield in an average of three years was given by triploid scab-immune apple cultivars on a semi-dwarf rootstock 54-118: Maslovskoye, Zhilinskoye, Spasskoye and Yablochny Spas.

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