Order-disorder phenomena in α -brass - III. Influence of plastic deformation

1960 ◽  
Vol 257 (1290) ◽  
pp. 363-385 ◽  
Keyword(s):  
Plastic Deformation ◽  
Cold Work ◽  
Stored Energy ◽  
High Concentration ◽  
Complex Behaviour ◽  
Second Stage ◽  
Third Stage ◽  
Anneal Hardening ◽  
Two Stages ◽  
Degree Of Order

The evolution of stored energy during heating for specimens of deformed α-brass is quite different from that previously observed for pure metals; the stored energy is much larger and at least three stages of evolution exist. These have been studied for deformation in torsion and tension and the results correlated with measurements of electrical resistivity, density and hardness. The large release of energy in the first two stages is attributed mainly to the return of order destroyed by plastic deformation; the degree of disorder after heavy cold work is much greater than after quenching (part II). However, slight deformation (10% tension) increases the degree of order slightly. The first stage of energy release, below 120 °C, is probably due to rapid reordering assisted by vacancies created during deformation. The second stage represents the bulk of the reordering and some recovery involving rearrangement and annihilation of dislocations. The deformed specimens are probably strain-aged and thus recovery is accompanied by the dispersal of atmospheres of zinc which increases resistivity and decreases density, to some extent counteracting the effects of recovery. The balance of these three processes in stage 2 causes complex behaviour, the magnitude and even the sign of some changes in properties varies with the deformation. Reordering is complete before the beginning of the third stage of further recovery and recrystallization, in which dispersal of atmospheres is again important. Comparison of measurements of energy, resistivity and density suggests that the high concentration of stacking faults contributes to the resistivity. Anneal hardening is observed for the higher deformations and the maximum hardness coincides with the maximum degree of order.

The Origins of the Village Revisited: From Nuclear to Extended Households

2002 ◽  
Vol 67 (3) ◽  
pp. 417-433 ◽  
Author(s):  
Kent V. Flannery
Keyword(s):  
Nuclear Family ◽  
Extended Family ◽  
Near East ◽  
Shared Storage ◽  
Nuclear Families ◽  
Second Stage ◽  
Third Stage ◽  
Two Stages ◽  
Extended Households ◽  
The Village

In Mesoamerica and the Near East, the emergence of the village seems to have involved two stages. In the first stage, individuals were distributed through a series of small circular-to-oval structures, accompanied by communal or “shared” storage features. In the second stage, nuclear families occupied substantial rectangular houses with private storage rooms. Over the last 30 years a wealth of data from the Near East, Egypt, the Trans-Caucasus, India, Africa, and the Southwest U.S. have enriched our understanding of this phenomenon. And in Mesoamerica and the Near East, evidence suggests that nuclear family households eventually gave way to a third stage, one featuring extended family households whose greater labor force made possible extensive multifaceted economies.

Signs of polichnous deformations in microstructures of carbonate rocks of the Katav-Yuryuzan zone of transpression (Southern Urals)

2020 ◽  
pp. 13-21
Author(s):  
A. V. Tevelev ◽  
A. A. Borisenko ◽  
M. I. Erokhina ◽  
S. S. Popov ◽  
I. A. Kosheleva ◽  
...  
Keyword(s):  
Simple Shear ◽  
Carbonate Rocks ◽  
Pure Shear ◽  
Southern Urals ◽  
Second Stage ◽  
The Third ◽  
The North ◽  
Third Stage ◽  
Three Stages ◽  
Two Stages

The Katav-Ivanovsk transpression zone experienced at least two stages of tectonic deformations, and the sequence of deformations was approximately the same throughout the entire zone — from the Bakal-Satka fault in the south to the Suleimsky fault in the north. Three stages of the formation of parageneses were identified. The parageneses of the first and the second stages were formed in a pure shear environment, and the paragenesis of the third stage — in a simple shear environment. There are stylolites (S1) parallel to bedding, and mineral veins (V1) in the paragenesis of the first stage. Paragenesis of the second stage combines stylolites (S2), mineral veins (V2) and intergranular cleavage (S2). In paragenesis of the third stage were distinguished schistosity (S3), milonites (S3), cataclasites, mica packets (SC-textures), and the rotation structures of porphyroblasts.

A THREE-STEP COMBINED GENETIC PROGRAMMING AND NEURAL NETWORKS METHOD OF FORECASTING THE S&P/CASE-SHILLER HOME PRICE INDEX

2013 ◽  
Vol 12 (01) ◽  
pp. 1350001 ◽  
Author(s):  
MAK KABOUDAN ◽  
MARK CONOVER
Keyword(s):  
Neural Networks ◽  
Genetic Programming ◽  
San Francisco ◽  
Price Index ◽  
Combined Method ◽  
Second Stage ◽  
Third Stage ◽  
Multi Agent ◽  
Stage Process ◽  
Two Stages

Forecasts of the San Diego and San Francisco S&P/Case-Shiller Home Price Indices through December 2012 are obtained using a multi-agent system that utilizes January, 2002–June, 2011 data. Agents employ genetic programming (GP) and neural networks (NN) in a three-stage process to produce fits and forecasts. First, GP and NN compete to provide independent predictions. In the second stage, they cooperate by fitting the first-stage competitor's residuals. Outputs from the first two stages then become inputs to produce two final GP and NN outputs. The NN output from the third stage using the combined method produces improved forecasts over the 3-stage GP method as well as those produced by either method alone. The proposed methodology serves as an example of how combining more than one estimation/forecasting technique may lead to more accurate forecasts.

Cytochemical and ultrastructural differences between intraspecific compatible and incompatible pollinations in Raphanus

1973 ◽  
Vol 183 (1070) ◽  
pp. 21-38 ◽  
Keyword(s):  
Pollen Tube ◽  
The Self ◽  
Self Incompatibility ◽  
Second Stage ◽  
Incompatible Pollen ◽  
Large Numbers ◽  
Third Stage ◽  
Incompatibility System ◽  
Three Stages ◽  
Two Stages

Examination of the behaviour of pollen on the style of Raphanus , following compatible and incompatible intraspecific pollinations, has revealed the self-incompatibility system in this species to be composed of at least three stages. The first, on which no information has been obtained in this study, involves the germination of the grain. The second stage concerns the ability of the pollen tube to penetrate the cuticle of the stigmatic papilla. It is possible that cutinase is deficient in incompatible pollen tubes but, in most instances, the outer layers of the stigmatic wall are penetrated. The third stage involves the interaction of substances secreted by the pollen tube with products of the stigmatic cytoplasm. The interaction is swiftly followed by the deposition, in the stigma, of a layered callosic body. This is formed immediately under the point of penetration and takes about 6 h to develop fully. Development of the pollen tube ceases as the first layers of callose are laid down. It is possible that the substances in the pollen responsible for the initiation of the second two stages are held in the tapetally synthesized tryphine, thus accounting for the sporophytic control of pollen compatibility in this species. The mature stigma contains large numbers of crystalline protein bodies, but it is not known whether they play any role in the self-incompatibility system.

Superdeep Penetration - Novel Method of Nanoreinforced Composites Producing Based on Metallic, Ceramic and Polymer Matrixes

2009 ◽  
Vol 79-82 ◽  
pp. 1975-1978
Author(s):  
Oleg Figovsky ◽  
Sergey Usherenko
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Chemical Properties ◽  
Second Stage ◽  
Superdeep Penetration ◽  
Third Stage ◽  
Novel Method ◽  
Two Stages ◽  
Physical And Chemical ◽  
And Chemical Properties

Now there is a motivation for creation of the materials possessing a considerable difference of physical and chemical properties in volume of composite materials 1 . Composite materials allow realizing a complex of various properties which cannot be realized simultaneously in mono material. The perspective in reception of a new smart nanomaterial is basically defined by possibilities which create processing conditions Choosing and manufacturing of fibers refers to the second stage of composite material reinforcement. Process of assemblage of a composite material from the details made at first two stages of process refers to the third stage. But at each stage of process of manufacturing of a composite material there are specific problems. The basic problem at composite material creation, as a rule, is essential contradictions between engineering solutions for various stages of process.

scholarly journals Robust security against cyber threats with variety of captchaGüvenlik kodu çeşitliliği ile siber tehditlere karşı güçlü güvenliğin sağlanması

2018 ◽  
Vol 15 (3) ◽  
Author(s):  
Huseyin Çakır ◽  
Necla Uluhatun
Keyword(s):  
Full Text ◽  
English Summary ◽  
Rapid Progress ◽  
Second Stage ◽  
Cyber Threats ◽  
The Third ◽  
Third Stage ◽  
Combination Test ◽  
Will Force ◽  
Two Stages

Cyberspace also brings about cybercrime, which is evolving along with the rapid progress of technology and internet. Captchars are used as a layer of security to prevent these crimes. It is a security mechanism designed to distinguish whether an entry is made by the user when entering a system and is used for protection against malicious bot programs. For this reason, it is important that the introduction is done by human or bot software.In this study, a safer Captcha combination test was presented based on Captcha types and Captcha studies. The proposed approach basically consists of three steps. In the first step, the user is asked to test with a simple text-based Captcha to avoid the difficulty of captcha testing. The second stage, when the first stage test is unsuccessful, offers a more complicated captcha test with text and picture. In the third stage, different-based captcha are presented which are more complex than the first two stages and will force the user. This approach makes it easier to distinguish the bot with the user, and the bot program's algorithm can be challenged with the variety of captcha combinations created. Extended English summary is in the end of Full Text PDF (TURKISH) file.ÖzetSiber dünyada, teknoloji ve internetin hızla ilerlemesi beraberinde gelişmekte olan siber suçları da getirmektedir. Güvenlik kodlar (captcha) bu suçları engellemek amacıyla oluşturulan bir güvenlik katmanı olarak kullanılırlar. Bir sisteme giriş yapıldığında girişin kullanıcı tarafından yapılıp yapılmadığının ayırt edilebilmesi için tasarlanmış bir güvenlik mekanizması ve kötü niyetli bot programlarına karşı korunma amaçlı kullanılır. Bu nedenle girişin insan mı yoksa bot yazılımı tarafından mı yapıldığı önem arz etmektedir.Bu çalışmada, Güvenlik kod (captcha) türleri ve yapılan Güvenlik kod (captcha) çalışmaları baz alınarak daha güvenli bir Güvenlik kod (captcha)  kombinasyon testi sunulmuştur. Önerilen yaklaşım temelde üç aşamadan oluşmaktadır. İlk aşamada kullanıcının Güvenlik kod (captcha) ile imtihanını zorlaştırmamak için metin tabanlı basit Güvenlik kod (captcha) ile test edilmesi istenmektedir. İkinci aşamada, ilk aşama testi başarısız olduğunda metin ve resim tabanlı daha zorlaştırılmış Güvenlik kod (captcha) testi sunulmaktadır. Üçüncü aşamada ise ilk iki aşamadan daha karmaşık ve kullanıcıyı zorlayacak farklı tabanlı Güvenlik kodu (captcha)  sunulmaktadır. Bu yaklaşım ile kullanıcı ile bot ayırımı daha kolay yapılabilmekte ve oluşturulan Güvenlik kodu (captcha)  birleşim çeşitliliği ile bot programlarının algoritmasına meydan okunabilmektedir. 

QUINT: A Problem-Solving Strategy for Mechanical System Conceptual Design: Part II — Analysis, Evaluation, and Example

1990 ◽  
Author(s):  
Wang Qun ◽  
Yang Haibin ◽  
Zhou Ji ◽  
Yu Jun
Keyword(s):  
Problem Solving ◽  
Mechanical System ◽  
Conceptual Design ◽  
Main Idea ◽  
Second Stage ◽  
Third Stage ◽  
Problem Solving Strategy ◽  
Two Stages ◽  
Solving Strategy

Abstract In part I, the characteristics of mechanical system conceptual design, the main idea of of QUINT and how to realize the first-stage, second-stage and third-stage reasoning were discussed. The part II will continue to study the last two stages of QUINT strategy, and give an example.

The Accommodation Reflex (Pupillary) studied in the same Patients during the Three Stages of General Paralysis [Ze réxe accommodateur étudié chez les mêmes malades aux trois périodes de la paralysie générale]. (Rev. de Psychiat., No. 6, Juin, 1902.) Marandon de Montyel

1903 ◽  
Vol 49 (204) ◽  
pp. 177-178
Author(s):  
H. J. Macevoy
Keyword(s):  
Early Stage ◽  
Rapid Evolution ◽  
Motor Power ◽  
General Paralysis ◽  
Second Stage ◽  
The Third ◽  
Third Stage ◽  
Three Stages ◽  
Two Stages ◽  
Two Sides

Dr. de Montyel gives the results of his investigations on the sixth of the reflexes which he undertook to study in general paralysis. The discrepancies noticed in the conclusions of many other observers are attributed to their studying patients in various stages; in all researches of this nature it is indispensable to follow the only method susceptible of furnishing data which may be compared with one another,—that is, following up and examining the same patients from the onset to the termination of the disease. Out of 104 cases of general paralysis this method was satisfactorily carried out in the case of thirty only, the others having succumbed either in the first or second stage; 680 satisfactory observations were made, and the results of these are carefully tabulated. The following are some of the author's general conclusions:—Accommodation is more often abnormal than normal in general paralysis; exaggeration of the reflex is rare; diminution is twenty-four times more frequent—abolition being slightly more common than simple diminution. The reaction is nearly always equal on the two sides; in a few rare cases one finds normal accommodation on one side and abolition on the other. In the early stage only does one find normal accommodation more frequent than abnormal; but in the second, and more so in the third stage, abnormality is the rule. Abolition is commoner in the late stage. In more than a third of the remissions there was abnormality. Certain differences in the accommodation reflex are found in the various forms of the disease; it is more often and more profoundly altered with conditions of excitement. As regards the ætiology the reflex was always found abnormal in traumatic general paralysis; next in frequency (i. e. after abnormality of reflex) comes the alcoholic form. Alteration of the reflex is common with cases at the extreme ages of incidence of the disease (after fifty and below thirty). Accommodation was more often and more profoundly affected in the first two stages of general paralysis in proportion to the impairment of motor power. The investigation of the accommodation reflex on account of its frequent and early alterations may be helpful in the diagnosis of doubtful cases, but it affords no indication as to the slow or rapid evolution of the disease. H. J. Macevoy.

Lifetime Employment and Stackelberg Mixed Duopoly Games with a Foreign Labour-Managed Competitor

2020 ◽  
pp. 097674792094177
Author(s):  
Kazuhiro Ohnishi
Keyword(s):  
Mixed Duopoly ◽  
Stackelberg Games ◽  
Lifetime Employment ◽  
Second Stage ◽  
The Third ◽  
Strategic Commitment ◽  
Foreign Labour ◽  
Third Stage ◽  
Two Stages ◽  
Commitment Device

This article considers two Stackelberg games in which a state-owned firm competes against a foreign labour-managed firm. The first game is as follows. In the first stage, the state-owned firm decides whether to offer lifetime employment as a strategic commitment device. In the second stage, the foreign labour-managed firm decides whether to offer lifetime employment as a strategic commitment device. In the third stage, both firms simultaneously and independently choose actual outputs. The structure of the second game is nearly identical and differs only in the order in which the firms decide on the offer of lifetime employment in the first two stages. This study presents the equilibrium outcomes of these two Stackelberg games.

Altered Fine Structure of B Lymphocytes Correlated with Defective Terminal Differentiation

1973 ◽  
Vol 31 ◽  
pp. 386-387
Author(s):  
Dale E. Bockman ◽  
L. Y. Frank Wu ◽  
Alexander R. Lawton ◽  
Max D. Cooper
Keyword(s):  
Immune Deficiency ◽  
B Lymphocytes ◽  
Plasma Cells ◽  
Present Report ◽  
Specific Antigen ◽  
Terminal Differentiation ◽  
Second Stage ◽  
Two Stages ◽  
Deficiency Diseases ◽  
Cell Line Generation

B-lymphocytes normally synthesize small amounts of immunoglobulin, some of which is incorporated into the cell membrane where it serves as receptor of antigen. These cells, on contact with specific antigen, proliferate and differentiate to plasma cells which synthesize and secrete large quantities of immunoglobulin. The two stages of differentiation of this cell line (generation of B-lymphocytes and antigen-driven maturation to plasma cells) are clearly separable during ontogeny and in some immune deficiency diseases. The present report describes morphologic aberrations of B-lymphocytes in two diseases in which second stage differentiation is defective.

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