TEMPERATURE INDUCED VARIATION IN THE RATES OF REPRODUCTIVE PROCESSES IN DENDROCTONUS RUFIPENNIS (COLEOPTERA: SCOLYTIDAE): A NEW APPROACH TO DETECTING CHANGES IN POPULATION QUALITY

1979 ◽  
Vol 111 (9) ◽  
pp. 1069-1078 ◽  
Author(s):  
T.S. Sahota ◽  
A.J. Thomson
Keyword(s):  
Deposition Rate ◽  
Bark Beetle ◽  
Dendroctonus Rufipennis ◽  
New Approach ◽  
Beetle Population ◽  
Insect Populations ◽  
Induced Variation ◽  
Reproductive Processes ◽  
Different Levels ◽  
Population Quality

AbstractTo discover measurable parameters for detecting quality differences (with respect to reproduction) in insect populations, variations in temperature were utilized to obtain manifestation of quality at different levels. Rates of reproductive and associated processes such as yolk deposition, gallery excavation, and oviposition were measured in Dendroctonus rufipennis (Kirby) at four temperatures. Information presented here allows an estimation of D. rufipennis reproduction as affected by temperature. Among the various parameters measured the length of initial egg-free gallery and the number of eggs/unit productive gallery length and yolk deposition rate could be used to discriminate bark-beetle population quality. Rates of yolk deposition appeared most useful and widely applicable for this purpose.

A chemical–mineralogical classification of common plutonic rocks and associations

1983 ◽  
Vol 73 (3) ◽  
pp. 135-149 ◽  
Author(s):  
F. Debon ◽  
P. Le Fort
Keyword(s):  
Analytical Data ◽  
Quartz Content ◽  
New Approach ◽  
Mineralogical Characteristics ◽  
Simple Chemical ◽  
Plutonic Rocks ◽  
The Individual ◽  
New Criteria ◽  
Different Levels

ABSTRACTA classification is proposed, based mainly on major element analytical data plotted in a coherent set of three simple chemical-mineralogical diagrams. The procedure follows two complementary steps at two different levels. The first is concerned with the individual sample: the sample is given a name (e.g. granite, adamellite, granodiorite) and its chemical and mineralogical characteristics are determined. The second one is more important: it aims at defining the type of magmatic association (or series) to which the studied sample or group of samples belongs. Three main types of association are distinguished: cafemic (from source-material mainly or completely mantle-derived), aluminous (mainly or completely derived by anatexis of continental crust), and alumino-cafemic (intermediate between the other two types). Subtypes are then distinguished among the cafemic and alumino-cafemic associations: calc-alkaline (or granodioritic), subalkaline (or monzonitic), alkaline (and peralkaline), tholeiitic (or gabbroic-trondhjemitic), etc. In the same way, numerous subtypes and variants are also distinguished among the aluminous associations using a set of complementary criteria such as quartz content, colour index, alkali ratio, quartz–alkalies relationships and alumina index.Although involving a new approach using partly new criteria, this classification is consistent with most of the divisions used in previous typologies. The method may also be used in the classification of the volcanic equivalents of common plutonic rocks.

scholarly journals Graph Algorithms for Word Sense Disambiguation in Biomedicine

2015 ◽  
Author(s):  
Rodrigo Goulart ◽  
Juliano De Carvalho ◽  
Vera De Lima
Keyword(s):  
Text Mining ◽  
Graph Algorithms ◽  
State Of The Art ◽  
Word Sense Disambiguation ◽  
The State ◽  
Word Sense ◽  
New Approach ◽  
Similar Performance ◽  
Sense Disambiguation ◽  
Different Levels

Word Sense Disambiguation (WSD) is an important task for Biomedicine text-mining. Supervised WSD methods have the best results but they are complex and their cost for testing is too high. This work presents an experiment on WSD using graph-based approaches (unsupervised methods). Three algorithms were tested and compared to the state of the art. Results indicate that similar performance could be reached with different levels of complexity, what may point to a new approach to this problem.

scholarly journals Bark Beetle Population Dynamics in the Anthropocene: Challenges and Solutions

2018 ◽  
Author(s):  
Peter H. W. Biedermann ◽  
Jean-Claude Grégoire ◽  
Axel Gruppe ◽  
Jonas Hagge ◽  
Almuth Hammerbacher ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Bark Beetle ◽  
Collaborative Research ◽  
Bark Beetles ◽  
Large Scale ◽  
Ips Typographus ◽  
Ecological Framework ◽  
Beetle Population ◽  
Spruce Bark ◽  
Important Pest

Tree-killing bark beetles are the most economically important insects in conifer forests worldwide. Yet  despite >200 years of research, the drivers of population eruptions or crashes are still not fully understood, precluding reliable predictions of the effects of global change on beetle population dynamics and impacts on ecosystems and humans.  We critically analyze potential biotic and abiotic drivers of population dynamics of the European spruce bark beetle (Ips typographus) and present a novel ecological framework that integrates the multiple drivers governing this bark beetle system. We call for large-scale collaborative research efforts to improve our understanding of the population dynamics of this important pest; an approach that might serve as a blueprint for other eruptive forest insects.

Solar Energy in Agro-Ecologic Micrometeorology Measurements

2018 ◽  
pp. 141-148
Author(s):  
Ildus Saetgalievich Nurgaliev
Keyword(s):  
Energy Transfer ◽  
Energy Supply ◽  
Material Point ◽  
Diffusion Reaction ◽  
Solar Panels ◽  
New Approach ◽  
Number Of Components ◽  
Advection Diffusion ◽  
Remote Sites ◽  
Different Levels

New approach to the measurements in agro-ecologic micrometeorology is suggested on the bases of renewable solar panels for energy supply to instruments at the remote sites and new turbulent model of the flow of the gases. Analytical dynamic model of the turbulent multi-component flow in the three-layer boundary system is presented. Turbulence is simulated by the non-zero vorticity, but not only. Other mathematical aspects of the turbulence are an introducing new model of the material point and considering a torsion of their trajectories. The generalized advection-diffusion-reaction equation is derived for an arbitrary number of components in the flow. The flows in the layers are objects for matching requirements on the boundaries between the layers. Different types of transport mechanisms are dominant on the different levels of the layers and space scales. The same models of mass and energy transfer are instrumental in simulation rural electrification concepts in general on the bases renewable sources.

scholarly journals Spruce Beetle Population Suppression in Northern Utah

2000 ◽  
Vol 15 (3) ◽  
pp. 122-128 ◽  
Author(s):  
B. J. Bentz ◽  
A. S. Munson
Keyword(s):  
Early Detection ◽  
Bark Beetle ◽  
Federal Agencies ◽  
Pheromone Traps ◽  
Field Surveys ◽  
Beetle Population ◽  
Spruce Beetle ◽  
Spruce Stands ◽  
Northern Utah ◽  
Population Suppression

Abstract The spruce beetle is a widely dispersed, native bark beetle that attacks and kills North American spruces. We describe a project that was initiated to suppress an endemic spruce beetle population in an isolated 1000 ac area of spruce in northeastern Utah. Techniques used included baited pheromone traps, selective harvesting and burning of infested trees, and trap trees. Over the 3 yr period of monitoring, the number of standing, currently infested spruce trees was reduced 91%. Field surveys and data trends, in comparison with a nearby spruce beetle population that continued to increase, indicate that the treatments played a major role in decreasing the trend of spruce beetle-infested trees during the study period. This combination of suppression techniques was successful due to the isolated nature of the spruce stands, early detection of the beetle population, accessibility of the stands, and coordinated efforts of local, state, and federal agencies. West. J. Appl. For. 15(3):122-128.

Privacy Perspective from Utilitarianism and Metaphysical Theories

2003 ◽  
pp. 267-278
Author(s):  
Hasan A. Abbas ◽  
Salah M. Al-Fadhly
Keyword(s):  
Social Studies ◽  
Real Life ◽  
Research Field ◽  
The Internet ◽  
Ethical Theories ◽  
Philosophical Perspective ◽  
New Approach ◽  
Different Levels

The Internet is a hot issue nowadays because of its important role at different levels. The topic of privacy is a debatable issue: we read in the research field scholars for and against applying this concept in real life and how to deal with it. Most researchers mainly focus on this subject from a social studies perspective. This chapter takes a new approach and discusses this issue from a philosophical perspective where we use two ethical theories (Mill & Kant) to raise the important relevant points regarding this subject.

scholarly journals Theoretical and Methodical Aspects of Ensuring Sustainable Operation of the Businesses Considering Their Innovative Activity

2020 ◽  
Vol 11 (5) ◽  
pp. 186
Author(s):  
Alexey Tikhonov ◽  
Sergey Novikov
Keyword(s):  
Cross Section ◽  
Innovative Activity ◽  
New Approach ◽  
Sustainable Operation ◽  
A Company ◽  
Different Levels

This article considers a new approach to ensuring the sustainable functioning of a company considering its innovative activity on the basis of the original tools developed by the author, including strictly regulated indicators of the organization's activity, ensuring its stability, and their flexible filling to maintain it through a timely targeted impact on their level. The paper shows the interaction of two different levels of indicators in their quantitative and qualitative cross section.

scholarly journals Functional Evaluation of Asibot: A New Approach on Portable Robotic System for Disabled People

2012 ◽  
Vol 9 (1) ◽  
pp. 85-97 ◽  
Author(s):  
Alberto Jardón ◽  
Concepción A. Monje ◽  
Carlos Balaguer
Keyword(s):  
Control System ◽  
Degrees Of Freedom ◽  
The Elderly ◽  
Robotic Arm ◽  
Functional Evaluation ◽  
Light Weight ◽  
Disabled People ◽  
New Approach ◽  
Human Care ◽  
Different Levels

In this work, an innovative robotic solution for human care and assistance is presented. Our main objective is to develop a new concept of portable robot able to support the elderly and those people with different levels of disability during the execution of daily tasks, such as washing their face or hands, brushing their teeth, combing their hair, eating, drinking, and bringing objects closer, among others. Our prototype, ASIBOT, is a five degrees of freedom (DOF) self-contained manipulator that includes the control system and electronic equipment on board. The main advantages of the robot are its light weight, about 11 kg for a 1.3 m reach, its autonomy, and its ability to move between different points (docking stations) of the room or from the environment to a wheelchair and vice versa, which facilitates its supportive functions. The functional evaluation of ASIBOT is addressed in this paper. For this purpose the robotic arm is tested in different experiments with disabled people, gathering and discussing the results according to a methodology that allows us to assess users' satisfaction.

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