scholarly journals Kasvutingimuste lineaarse muutumise mõju uurimine puistu kõrguse kasvukõverale simulatsioonide abil männikutes / Simulated change of stand height curves as the result of linear change of growth conditions in the case of Scotch Pine stands

2011 ◽  
Vol 55 (1) ◽  
pp. 64-79
Author(s):  
Artur Nilson
Keyword(s):  
Growth Curves ◽  
Growth Conditions ◽  
Growth Potential ◽  
Stand Age ◽  
Scotch Pine ◽  
Annual Increment ◽  
Linear Change ◽  
Stand Height ◽  
Species Specific ◽  
Future Growth

Abstract The height growth curves of Scotch Pine (Pinus sylvestris L.) stands were simulated for stands with initial height asymptote H∞ 15 m, 25 m and 35 m and with linear change p of the potency of growth conditions 0.5% yr-1, 0.2% yr-1, 0.1% yr-1 , -0.2% yr-1 and with no change as the base. Different models to transmit the changing growth potential into stand growth were used: changing the efficient length of growth year replacing the stand age t with the expression t(1 + tp) with fixed H∞ in variant (1b) or calculating the current asymptote H∞,t as the expression H∞(1 + tp) corrected for asymptotic approaching the species specific asymptote sup(H∞). Current annual increment CAI in the last case was calculated using the equations CAIt = f(t, H∞,t) in variant (3ct), CAIt = f(H, H∞,t) in variant (4ch) and CAIt = f(H, H∞,t)*(1+p/2) in variant (4chb). The height Ht in the last 3 cases was calculated as ascending sum of CAIt. Figures of the functions Ht = f(t, H∞) and CAIt = f(H, H∞) indicated the last as more informative about the changes in the shape of curves. The results of approximation of simulated curves with five different functions indicated the possibility of their modeling using traditional functions and fixed value of height asymptote. The fit was the poorest for variants 4ch and 4chb. The function for conversation the apparent growth curve based on unique height measurements into real one and vice versa was deduced for version 1b. The need to make distinct difference between the past, present and future growth in growth modeling was underlined.

China's Productivity Slowdown and Future Growth Potential

2020 ◽  
Author(s):  
Loren Brandt ◽  
John Litwack ◽  
Elitza Mileva ◽  
Luhang Wang ◽  
Yifan Zhang ◽  
...  
Keyword(s):  
Growth Potential ◽  
Productivity Slowdown ◽  
Future Growth

Farm Diversification: Drivers, Barriers and Future Growth Potential

EuroChoices ◽  
2020 ◽  
Author(s):  
Claire Jack ◽  
Austen Ashfield ◽  
Adewale Henry Adenuga ◽  
Conall Mullan
Keyword(s):  
Growth Potential ◽  
Farm Diversification ◽  
Future Growth

scholarly journals Unleashing The Growth Potential Of Indian MSME Sector

2017 ◽  
Vol 20 (2) ◽  
pp. 35-52 ◽  
Author(s):  
Sumanjeet Singh ◽  
Minakshi Paliwal
Keyword(s):  
Economic Growth ◽  
Economic Structure ◽  
Total Export ◽  
Growth Potential ◽  
High Tech ◽  
Policy Measures ◽  
The Government ◽  
Future Growth ◽  
Innovation And Entrepreneurship

The MSME sector occupies a position of strategic significance in the Indian economic structure. This sector contributes nearly eight per cent to country’s GDP, employing over 80 million people in nearly 36 million widely-dispersed enterprises across the country; accounting for 45 per cent of manufactured output, 40 per cent of the country’s total export, and producing more than 8000 valueadded products ranging from traditional to high-tech. Furthermore, these enterprises are the nurseries for innovation and entrepreneurship, which will be key to the future growth of India. It is also an acknowledged fact that this sector can help realise the target of the proposed National Manufacturing Policy to enhance the share of manufacturing in GDP to 25 per cent and to create 100 million jobs by the end of 2022, as well as to foster growth and take India from its present two trillion dollar economy to a 20 trillion dollar economy. Despite the sector’s high enthusiasm and inherent capabilities to grow, its growth story still faces a number of challenges. In this light, the present paper examines the role of Indian MSMEs in India’s economic growth and explores various problems faced by the sector. The paper also attempts to discuss various policy measures undertaken by the Government to strengthen Indian MSMEs. Finally, the paper proposes strategies aimed at strengthening the sector to enable it to unleash its growth potential and help make India a 20 trillion dollar economy.

scholarly journals Effects of heavy thinnings on the increment and selection of trees for tending in Norway spruce monoculture in natural hazard conditions

2017 ◽  
pp. 31-54
Author(s):  
Martin Bobinac ◽  
Sinisa Andrasev ◽  
Andrijana Bauer-Zivkovic ◽  
Nikola Susic
Keyword(s):  
Norway Spruce ◽  
Growth Stage ◽  
Natural Hazard ◽  
Basal Area ◽  
Growth Potential ◽  
Stand Age ◽  
Diameter Increment ◽  
Volume Increment ◽  
Selection Of ◽  
Area And Volume

The paper studies the effects of two heavy selection thinnings on the increment of Norway spruce trees exposed to ice and snow breaks in eastern Serbia. In a thinning that was carried out at 32 years of age, 556 candidates per hectare were selected for tending, and at the age of 40, of the initial candidates, 311 trees per hectare (55.9%) were selected as future trees. In all trees at 41-50 age period, diameter increment was higher by 31%, basal area increment by 64% and volume increment by 67% compared to 32-40 age period. The collective of indifferent trees is significantly falling behind compared to future trees in terms of increment values in both observed periods. However, the value of diameter, basal area and volume increments, of the collective of "comparable" indifferent trees are lower in comparison to the values of increments of future trees by 10-15% in the 32-40 age period, and by 15-21% in the 41-50 age period and there are no significant differences. The results show that heavy selective thinnings, initially directed at a larger number of candidates for tending at stand age that does not differ much from the period of carrying out first "commercial" thinnings, improve the growth potential of future and indifferent trees, where it is rational to do the tree replacement for the final crop in "susceptible" growth stage to snow and ice breaks.

scholarly journals Growth potential can affect timing of maturity in a long-lived semelparous fish

2018 ◽  
Vol 14 (7) ◽  
pp. 20180269 ◽  
Author(s):  
Kazuki Yokouchi ◽  
Françoise Daverat ◽  
Michael J. Miller ◽  
Nobuto Fukuda ◽  
Ryusuke Sudo ◽  
...  
Keyword(s):  
Anguilla Anguilla ◽  
Growth Conditions ◽  
Growth Potential ◽  
Individual Growth ◽  
Growth Trajectories ◽  
Female Size ◽  
European Eel ◽  
Growth And Survival ◽  
Silver Eels ◽  
Reproduction Cost

Many diadromous fishes such as salmon and eels that move between freshwater and the ocean have evolved semelparous reproductive strategies, but both groups display considerable plasticity in characteristics. Factors such as population density and growth, predation risk or reproduction cost have been found to influence timing of maturation. We investigated the relationship between female size at maturity and individual growth trajectories of the long-lived semelparous European eel, Anguilla anguilla . A Bayesian model was applied to 338 individual growth trajectories of maturing migration-stage female silver eels from France, Ireland, the Netherlands and Hungary. The results clearly showed that when growth rates declined, the onset of maturation was triggered, and the eels left their growth habitats and migrated to the spawning area. Therefore, female eels tended to attain larger body size when the growth conditions were good enough to risk spending extra time in their growth habitats. This flexible maturation strategy is likely related to the ability to use diverse habitats with widely ranging growth and survival potentials in the catadromous life-history across its wide species range.

scholarly journals Growth Potential of Listeria monocytogenes on Refrigerated Spinach and Rocket Leaves in Modified Atmosphere Packaging

Foods ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1211
Author(s):  
Paul Culliney ◽  
Achim Schmalenberger
Keyword(s):  
Listeria Monocytogenes ◽  
Modified Atmosphere Packaging ◽  
Growth Curves ◽  
High Growth ◽  
Food Product ◽  
Growth Potential ◽  
Modified Atmosphere ◽  
Visual Appearance ◽  
Iceberg Lettuce ◽  
Duration Of Storage

Minimally processed ready-to-eat (RTE) vegetables are increasingly consumed for their health benefits. However, they also pose a risk of being ingested with food-borne pathogens. The present study investigated the ability of RTE spinach and rocket to support the growth of Listeria monocytogenes as previous studies provided contradicting evidence. Findings were compared to growth on iceberg lettuce that has repeatedly been shown to support growth. Products were inoculated with a three-strain mix of L. monocytogenes at 10 and 100 cfu g−1 and stored in modified atmosphere (4 kPa O2, 8 kPa CO2) at 8 °C over 7–9 days. Spinach demonstrated the highest growth potential rate of 2 to 3 log10 cfu g−1 over a 9-day period with only marginal deterioration in its visual appearance. Growth potential on rocket was around 2 log10 cfu g−1 over 9 days with considerable deterioration in visual appearance. Growth potential of iceberg lettuce was similar to that of rocket over a 7-day period. Growth curves fitted closely to a linear growth model, indicating none to limited restrictions of growth over the duration of storage. The high growth potentials of L. monocytogenes on spinach alongside the limited visual deterioration highlight the potential risks of consuming this raw RTE food product when contaminated.

A Parsimonious Number of Growth Curves

1993 ◽  
Vol 10 (3) ◽  
pp. 132-136 ◽  
Author(s):  
Boris Zeide
Keyword(s):  
Growth Pattern ◽  
Ecological Factors ◽  
Growth Curves ◽  
Site Index ◽  
Growth Conditions ◽  
Growth Patterns ◽  
Construction Methods ◽  
Complex Interactions ◽  
Site Index Curve ◽  
Index Curve

Abstract Construction of new site index curves is often justified by a lack of growth information for a given species and site. This justification presumes that there is a one-to-one correspondence between growth pattern and stand conditions which are determined by numerous genetic and ecological factors together with their complex interactions. Because these factors are combined in an infinite number of ways, each stand is unique and needs its own site index curve. The effort required for collecting growth information would be prohibitive. This effort is also unnecessary because many existing curves coincide with each other and are, therefore, redundant. Differences in species, site, and construction methods do not prevent the appearance of the same growth patterns. These facts indicate that unique growth conditions do not mean that each stand has a unique growth pattern. Therefore, a more productive approach to growth modeling consists of distilling these patterns from existing curves and yield tables rather than piling up more new site index curves. Earlier investigations showed that the diversity in growth curves can be reduced to a small number (15-30) of growth types. The present study demonstrates that the number of types can be further reduced to 3-5 without sacrificing accuracy of growth predictions. North. J. Appl. For. 10(3):132-136.

A simple growth and yield model for assessing changes in standing volume across Canada’s forests

2009 ◽  
Vol 85 (1) ◽  
pp. 57-64 ◽  
Author(s):  
C -H. Ung ◽  
P Y Bernier ◽  
X J Guo ◽  
M -C. Lambert
Keyword(s):  
Predictive Power ◽  
Robust Regression ◽  
Forest Growth ◽  
Growth Potential ◽  
Growth And Yield ◽  
Stand Age ◽  
Yield Model ◽  
Wood Volume ◽  
National Model ◽  
Growth And Yield Models

We have adjusted two growth and yield models to temporary sample plots from across Canada, and used climate variables in lieu of phytometric indices such as site index to represent, in part, the site-level variability in growth potential. Comparison of predicted increments in plot-level height, basal area and merchantable wood volume to increments of these variables measured in permanent sample plots shows a moderate to poor predictive ability. Comparison with the performance of four operational growth and yield models from different provinces across Canada shows comparable predictive power of this new model versus that of the provincial models. Based on these results, we suggest that the simplification of regional growth and yield models may be achieved without further loss of predictive power, and that the large error in the prediction of growth increment is mostly associated with the use of temporary sample plots which, by definition, contain little information on stand dynamics. We also suggest that, because of the empirical nature of these growth and yield models, the scale of application should determine the appropriate scale of the model. National estimates of forest growth are therefore less likely to be biased if obtained from a national model only than if obtained from a combination of regional models, where those exist, gap-filled with estimates from a national model. Key words: yield model, merchantable wood volume, stand age, climatic variables, simultaneous regression, robust regression

Operational improvements to clinic flow.

2014 ◽  
Vol 32 (30_suppl) ◽  
pp. 253-253
Author(s):  
Katherine Gross ◽  
Kelli Jacobs ◽  
Michael Romano
Keyword(s):  
Real Time ◽  
Growth Potential ◽  
Administrative Leadership ◽  
Full Time ◽  
Waiting Room ◽  
Patient Dissatisfaction ◽  
Productivity Data ◽  
Patient Satisfaction Scores ◽  
Appointment Time ◽  
Future Growth

253 Background: With expanding clinic volume and future growth potential, we face an issue of limited physical clinic capacity. This has resulted in extended patient wait times, physician idle time, and longer clinics days. Each of these issues adds to both provider and patient dissatisfaction and operational inefficiencies. Methods: Key operational metrics and through put data was analyzed with the oncology team. Agreements and goals for the process improvement were: no provider would be told they could not see a sick patient, patient’s time would be respected and maximize provider productivity. Data demonstrated that the current state would not accommodate future growth. Several operational changes were agreed upon by physician and administrative leadership: level load the days of the week, require several providers to move their clinic days; place structure and real-time discussion into how we manage same day and future “add-on” patients though setting clear expectations around clinician template times; assign a full time staff member to function as a “clinic flow coordinator" to triage same day add-ons, and facilitate provider room assignments, communicate with providers, and identify system or people barriers to clinic flow; provide each of the patients a “restaurant style” pager that will light up when they are ready to be taken to a room, allowing them the freedom to leave the waiting room without fear of missing their appointment time; implement a room-utilization manager software program allowing staff to see and collectively manage real time clinic flow and room utilization. Results: Provider feedback was very positive related to the flow and utilization of clinic rooms. The check-in staff described a less full waiting room even though volumes remained constant. We will monitor patient perception by patient satisfaction scores. Conclusions: To date, much of the results have been anecdotal. In order for these changes to become practice there is a clear need to tie in satisfaction and operational efficiency metrics. There will be ongoing coaching and feedback with providers and staff related to adherence to the new processes. As new providers are added to the practice, we will be very purposeful when adding their creating their templates and adding their clinic days.

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