scholarly journals Validating Gravity-Based Market Share Models Using Large-Scale Transactional Data

Big Data ◽  
2021 ◽  
Author(s):  
Yoshihiko Suhara ◽  
Mohsen Bahrami ◽  
Burcin Bozkaya ◽  
Alex ‘Sandy’ Pentland
Keyword(s):  
Market Share ◽  
Large Scale ◽  
Transactional Data

Large-Scale Evaluations of Curricular Effectiveness

2012 ◽  
Vol 34 (4) ◽  
pp. 391-412 ◽  
Author(s):  
Rachana Bhatt ◽  
Cory Koedel
Keyword(s):  
Market Share ◽  
Large Scale ◽  
Elementary Mathematics ◽  
Decision Makers ◽  
Educational Decision ◽  
Market Shares ◽  
Mathematics Curricula

We use data from one of the few states where information on curriculum adoptions is available—Indiana—to empirically evaluate differences in performance across three elementary-mathematics curricula. The three curricula that we evaluate were popular nationally during the time of our study, and two of the three remain popular today. We find large differences in effectiveness between the curricula, most notably between the two that held the largest market shares in Indiana. Both are best characterized as traditional in pedagogy. We also show that the publisher of the least-effective curriculum did not lose market share in Indiana in the following adoption cycle; one explanation is that educational decision makers lack information about differences in curricular effectiveness.

The Co-operative Movement in Britain: From Crisis to “Renaissance,” 1950–2010

2013 ◽  
Vol 14 (2) ◽  
pp. 271-302 ◽  
Author(s):  
John Wilson ◽  
Anthony Webster ◽  
Rachael Vorberg-Rugh
Keyword(s):  
Market Share ◽  
Large Scale ◽  
Historical Analysis ◽  
Business Environment ◽  
Organizational Dynamics ◽  
Food Retailing ◽  
Early Twenty ◽  
The 1950S ◽  
Fierce Competition ◽  
New Research

Between 1950 and 2010, the British co-operative movement faced a series of commercial, structural, and corporate governance crises. Having pioneered many of the features of modern large-scale retailing since its origins in the mid-nineteenth century, from the 1950s the Co-operative Wholesale Society (CWS) and the retail cooperative societies it served experienced plummeting market share, continued internecine rivalries, and increasing marginalization. In the early twenty-first century, however, co-operatives improved their market share and experienced a “Renaissance” in commercial fortunes despite continued fierce competition in food retailing. As yet there has been little exploration of the nature of this turnaround and the ways in which the once-foundering co-operative business model was re-engineered.Drawing on new research into the CWS (renamed The Co-operative Group in 2001), this article provides a historical analysis of the movement’s decline and revival. As the article details, from the 1950s significant efforts were made to reform CWS and the movement as a whole. However, co-operatives were slow to adapt to the changing business environment, hampered by dysfunctional organizational dynamics that constrained structural change and limited efforts to compete with private retail multiples. Following an unsuccessful takeover bid for CWS in 1997, co-operative opinion coalesced around the need for change. In the final section, the authors analyze the factors underpinning the “Renaissance,” focusing on both organizational innovations and the reassertion of core values and principles on which co-operation had been built. This provides a fascinating illustration of how a business can respond effectively to internal and external challenges, yet retain its fundamental character.

scholarly journals Cabeças: disseminação, desigualdade e concentração no mercado de cativos (Luanda, c. 1798-1804)

Cliocanarias ◽  
2021 ◽  
pp. 1-34
Author(s):  
Roberto Guedes Ferreira ◽  
◽  
Ana Paula Bôscaro ◽  
Keyword(s):  
Social Support ◽  
Market Share ◽  
Large Scale ◽  
Social Groups ◽  
Small Scale ◽  
Select Group ◽  
Slave Traders ◽  
Relative Market Share

Based on baptismal parish records, this paper analyses the relative market share between slave traders in Luanda from 1798 to 1804. In the context of high Atlantic demand for slaves, the baptism of cabeças (term used to refer to adult slaves destined for sale) show that the market was at the same time open and concentrated. Alongside many small-scale merchants, that sold a few slaves at a time, an extremely reduced number of large-scale traders dominated the trade in people. However, this select group of nearly monopolistic traders was heterogeneous, since it was composed of different kinds of people, including vessel captains, members of the Luanda elite and men from other parts of the Portuguese monarchy (Brazil and Portugal). The conclusion reached is that the intense participation of different social groups in the business meant that the market for captives had wide political, moral and social support.

scholarly journals Using Theory of Constraints Thinking Processes to Provide Solutions for Rejection Problems in Cold Chain Logistics

2018 ◽  
Author(s):  
Fatma Serab Onursal ◽  
Semra Birgün ◽  
Sabire Yazıcı
Keyword(s):  
Middle East ◽  
Customer Satisfaction ◽  
Market Share ◽  
Large Scale ◽  
Cold Chain ◽  
Theory Of Constraints ◽  
Competitive Environment ◽  
Perishable Products ◽  
Thinking Processes ◽  
Logistics Delivery

Turkey is an important logistics transport center between Asia, The Middle East and Europe. If this position is evaluated correctly, it will be a big contribution to the economy of the country by increasing the market share. In order to provide and sustain logistic quality in an increasingly competitive environment, it should be ensured that logistic services are performed more effectively and efficiently via analyzing faults/problems in detail and eliminating root causes of these. In logistics sector, especially in the case of cold chain logistics involving the transport of perishable products such as food, medicine, chemicals, etc., the rejects/ fines constitute on a large-scale rate. Companies, in the case of deliveries that are outside the expectations of the companies or contrary to their contracts, they either return the goods or take delivery by punishing. In this study, the causes of these logistics/delivery factors, effecting negatively the country’s economy were researched, and suggested important solutions by analyzed with the Theory of Constraints - Thinking Processes approach. These proposals for the characteristic solutions for cold chain logistics, if applied in the institutions and companies concerned with the logistic sector in the whole country, it is expected that will obtain the savings of the costs coming from penalty/reject applications in the country’s economy, and beyond this it is expected that will get the additional earnings from the increased market share by increasing the customer satisfaction.

Large scale network visualization with 3D-graphics

2001 ◽  
Vol 10 (3) ◽  
pp. 230-236 ◽  
Author(s):  
Eleftherios Koutsofios ◽  
Stephen North ◽  
Russ Truscott
Keyword(s):  
Large Scale ◽  
Telephone Network ◽  
Network Visualization ◽  
Data Sets ◽  
3D Graphics ◽  
Large Networks ◽  
Internet Service ◽  
Large Scale Network ◽  
Scale Network ◽  
Transactional Data

Data from large networks, such as a voice telephone network or a residential internet service, must be analysed to see how well the requirements of users are met. Visualization is essential to understand an explain this data. This article describes Swift-3D, a viewer for interactive discovery of patterns and anomalies in large-scale transactional data sets.

scholarly journals Analysis of Barriers to Wide Spread Adoption of Electric Vehicles in Shenzhen China

2017 ◽  
Author(s):  
Faping Wang ◽  
Jiali Yu ◽  
Peng Yang ◽  
Lixin Miao ◽  
Bin Ye
Keyword(s):  
Public Policy ◽  
Factor Analysis ◽  
Market Share ◽  
Electric Vehicles ◽  
Financial Incentives ◽  
Large Scale ◽  
Contingency Tables ◽  
Wide Spread ◽  
Limited Support

China planned to promote the large scale adoption of Electric Vehicles (EVs) in the thirteenth five year plans, however, this target faces numerous obstacles. This paper was trying to analyze the main barriers to wide spread adoption of EVs through a survey in Shenzhen, which has the largest EVs market share in China major cities. On the basis of previous scholarly findings,a new survey was conducted and 406 approved questionnaires were collected among 500 participants. Five hypotheses were established that examine four types of barriers to spread adoption of EVs:Preference, willingness and attitudes, public policy and financial incentives, innovation awareness and concerns of EVs technology, the analysis conducted by statistic methods(two-way frequency contingency tables, primary components and factor analysis )and the results provide the limited support for the hypotheses. Furthermore, some results positively supported the hypotheses and showed differences with previous scholarly findings, however,the findings of the study may not be a stagnant phenomenon, and more variables should be explored to accurately evaluate EVs penetration situations in China

scholarly journals Carotenoid Production from Microalgae: Biosynthesis, Salinity Responses and Novel Biotechnologies

Marine Drugs ◽  
2021 ◽  
Vol 19 (12) ◽  
pp. 713
Author(s):  
Yuanyuan Ren ◽  
Han Sun ◽  
Jinquan Deng ◽  
Junchao Huang ◽  
Feng Chen
Keyword(s):  
Salt Stress ◽  
Market Share ◽  
Large Scale ◽  
Food Additives ◽  
Carotenoid Biosynthesis ◽  
Global Market ◽  
Scale Production ◽  
Carotenoid Production ◽  
Carotenoid Accumulation ◽  
Large Scale Production

Microalgae are excellent biological factories for high-value products and contain biofunctional carotenoids. Carotenoids are a group of natural pigments with high value in social production and human health. They have been widely used in food additives, pharmaceutics and cosmetics. Astaxanthin, β-carotene and lutein are currently the three carotenoids with the largest market share. Meanwhile, other less studied pigments, such as fucoxanthin and zeaxanthin, also exist in microalgae and have great biofunctional potentials. Since carotenoid accumulation is related to environments and cultivation of microalgae in seawater is a difficult biotechnological problem, the contributions of salt stress on carotenoid accumulation in microalgae need to be revealed for large-scale production. This review comprehensively summarizes the carotenoid biosynthesis and salinity responses of microalgae. Applications of salt stress to induce carotenoid accumulation, potentials of the Internet of Things in microalgae cultivation and future aspects for seawater cultivation are also discussed. As the global market share of carotenoids is still ascending, large-scale, economical and intelligent biotechnologies for carotenoid production play vital roles in the future microalgal economy.

Some comments about observations and image processing of comet 29P/Schwassmann-Wachmann 1

1999 ◽  
Vol 173 ◽  
pp. 243-248
Author(s):  
D. Kubáček ◽  
A. Galád ◽  
A. Pravda
Keyword(s):  
Image Processing ◽  
Large Scale ◽  
Harvard College ◽  
Oak Ridge ◽  
Large Scale Structures ◽  
Short Period Comet ◽  
Short Period ◽  
Scale Structures ◽  
Harvard College Observatory ◽  
Period Comet

AbstractUnusual short-period comet 29P/Schwassmann-Wachmann 1 inspired many observers to explain its unpredictable outbursts. In this paper large scale structures and features from the inner part of the coma in time periods around outbursts are studied. CCD images were taken at Whipple Observatory, Mt. Hopkins, in 1989 and at Astronomical Observatory, Modra, from 1995 to 1998. Photographic plates of the comet were taken at Harvard College Observatory, Oak Ridge, from 1974 to 1982. The latter were digitized at first to apply the same techniques of image processing for optimizing the visibility of features in the coma during outbursts. Outbursts and coma structures show various shapes.

Evolution of Large-Scale Coronal Structures

1994 ◽  
Vol 144 ◽  
pp. 29-33
Author(s):  
P. Ambrož
Keyword(s):  
Magnetic Field ◽  
Field Line ◽  
Large Scale ◽  
Coronal Magnetic Field ◽  
Source Surface ◽  
Solar Cycles ◽  
Characteristic Relationship ◽  
The Magnetic Field ◽  
Coronal Structures

AbstractThe large-scale coronal structures observed during the sporadically visible solar eclipses were compared with the numerically extrapolated field-line structures of coronal magnetic field. A characteristic relationship between the observed structures of coronal plasma and the magnetic field line configurations was determined. The long-term evolution of large scale coronal structures inferred from photospheric magnetic observations in the course of 11- and 22-year solar cycles is described.Some known parameters, such as the source surface radius, or coronal rotation rate are discussed and actually interpreted. A relation between the large-scale photospheric magnetic field evolution and the coronal structure rearrangement is demonstrated.

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