摘要:

AbstractA set of vertices (edges) is called independent if no two vertices (edges) in the set are adjacent. The independence number β(G) (edge independence number β1(G)) is the maximum number of elements in an independent set of vertices (edges) ofG. It is shown for any graphGof orderp≥ 3, having complement Ḡ, that [p/2] ≤ β1(G) + β1(Ḡ) ≤ 2[p/2]. From this, upper and lower bounds for β1(G) · β1(Ḡ) are determined. All four bounds are shown to be best possible. It is verified that for every graphGof orderp, the bounds β(G) + β(Ḡ) ≤p+ 1 and β(G) · β(Ḡ) ≤ [(p+ 1)/2] · {(p+ 1)/2} hold and are best possible. Lower bounds for β(G) + β(Ḡ) and β(G) · β(Ḡ) are considered and

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01571.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractEquatorial sea levels may have risen during Pleistocene glaciations and lowered during interglacials, just the opposite of what is generally assumed.

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01572.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractBacteriophages were discovered 59 years ago. Despite the widespread distribution of these viruses, the extent of their interaction with higher organisms, including man, is still largely unknown. Recently, it has been shown that some phages carry genes that code for toxins, as in the case of phage β, which codes for diphtheria toxin. There have also been reports of phage genome transcription and translation inin vitroeukaryotic systems. The word bacteriophage conveys the historical nature of the discovery of this class of viruses, it does not define the limits of the viruses effects or host range. The recent discoveries of bacteriophage in commercial fetal calf serum and human vaccines should stimulate efforts to learn of phage interactions with eukaryotic systems

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01573.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractEastern chipmunks (Tamias striatus) and the thirteen‐lined ground squirrel (Spermophilus tridecemlineatus) exhibit seasonal changes in body weight and energy intake. The magnitude and timing of these cycles are affected by photo‐period. The amount of energy intake was greater in the Eastern chipmunk than it was in the ground squirrel; however, the converse occurred in the seasonal weight chan

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01574.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractFor T2spaces, it is shown that any left monotone partial order on a connected space with a finite primitive dispersion set has a minimal element. Also, any non‐void closed left monotone transitive relation on a connected space with compact primitive dispersion set has a minimal elemen

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01575.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractDespite great popularity, the field of clinical psychology has been undergoing severe internal struggles. The model of a clinical psychologist as scientist first and practitioner second has steadily eroded. Recent trends have included the development of professional schools for clinical psychologists that stress practical training for the rendering of professional services to people in difficulty, a general deemphasis in diagnostic testing, flexibility in intermingling various psychotherapeutic modalities, greater interest by professionals in community approaches, and consultation and prevention.The author sees the long‐range development of clinical psychology as the study of community processes and interventions at the community level. In the immediate future, clinical psychologists could with benefit utilize the approaches and philosophy of community psychology in their work with individuals and group

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01576.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01577.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01578.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01579.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0028-7113    

DOI:10.1111/j.2164-0947.1974.tb01580.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY