Book Reviews

It is refreshing to find among the myriad of volumes on trial practice published in recent years one which neither assumes that cases are tried in an emotional vacuum, where nothing but concrete facts and abstract propositions of law can influence the jury, nor deteriorates into a personal reminiscence on the part of the author of past court-room victories with the simple instruction to the reader to go and do likewise. Obviously a widely experienced courtroom practitioner, Mr.Gazan seldom utilizes that background directly for purposes of illustration; rather he draws from it general propositions applicable to courtroom procedure, which he then buttresses where necessary with citations to reported decisions. And to this he adds another ingredient found all too seldom in books of this type--a simple, straightforward,readable style which is easily understood and easily remembered

An integrated framework for predicting the risk of experiencing temperature conditions that may trigger late-maturity alpha-amylase in wheat across Australia

Late-maturity alpha-amylase (LMA) is a key concern for Australia’s wheat industry because affected grain may not meet receival standards or market specifications, resulting in significant economic losses for producers and industry. The risk of LMA incidence across Australia’s wheatbelt is not well understood; therefore, a predictive model was developed to help to characterise likely LMA incidence. Preliminary development work is presented here based on diagnostic simulations for estimating the likelihood of experiencing environmental conditions similar to a potential triggering criterion currently used to phenotype wheat lines in a semi-controlled environment. Simulation inputs included crop phenology and long-term weather data (1901–2016) for >1750 stations across Australia’s wheatbelt. Frequency estimates for the likelihood of target conditions on a yearly basis were derived from scenarios using either: (i) weather-driven sowing dates each year and three reference maturity types, mimicking traditional cropping practices; or (ii) monthly fixed sowing dates for each year. Putative-risk ‘footprint’ maps were then generated at regional shire scale to highlight regions with a low (66%) likelihood of experiencing temperatures similar to a cool-shock regime occurring in the field. Results suggested low risks for wheat regions across Queensland and relatively low risks for most regions across New South Wales, except for earlier planting with quick-maturing varieties. However, for fixed sowing dates of 1 May and 1 June and varying maturity types, the combined footprints for moderate-risk and high-risk categories ranged from 34% to 99% of the broad wheat region for South Australia, from 12% to 97% for Victoria, and from 9% to 59% for Western Australia. A further research component aims to conduct a field validation to improve quantification of the range of LMA triggering conditions; this would improve the predictive LMA framework and could assist industry with future decision-making based on a quantifiable LMA field risk

EVM and Achievable Data Rate Analysis of Clipped OFDM Signals in Visible Light Communication

Orthogonal frequency division multiplexing (OFDM) has been considered for visible light communication (VLC) thanks to its ability to boost data rates as well as its robustness against frequency-selective fading channels. A major disadvantage of OFDM is the large dynamic range of its time-domain waveforms, making OFDM vulnerable to nonlinearity of light emitting diodes (LEDs). DC biased optical OFDM (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM) are two popular OFDM techniques developed for the VLC. In this paper, we will analyze the performance of the DCO-OFDM and ACO-OFDM signals in terms of error vector magnitude (EVM), signal-to-distortion ratio (SDR), and achievable data rates under both average optical power and dynamic optical power constraints. EVM is a commonly used metric to characterize distortions. We will describe an approach to numerically calculate the EVM for DCO-OFDM and ACO-OFDM. We will derive the optimum biasing ratio in the sense of minimizing EVM for DCO-OFDM. Additionally, we will formulate the EVM minimization problem as a convex linear optimization problem and obtain an EVM lower bound against which to compare the DCO-OFDM and ACO-OFDM techniques. We will prove that the ACO-OFDM can achieve the lower bound. Average optical power and dynamic optical power are two main constraints in VLC. We will derive the achievable data rates under these two constraints for both additive white Gaussian noise (AWGN) channel and frequency-selective channel. We will compare the performance of DCO-OFDM and ACO-OFDM under different power constraint scenarios

The Ursinus Weekly, February 12, 1951

New high set by B-list group as 106 qualify • Y schedules chats, conducts retreat • Paynter-Keller production scores hit in Curtain Club group presentation • Play contest in progress; May Day heads named • Alumna to speak at girls\u27 Color Day program Thursday • Eight enter Ursinus for Spring term • Forum to feature Indian editor at next session • Speak Easy title of Ruby show • TV auditions slated • 3 graduate school test dates released • Ursinus to enter competition in intercollegiate bridge • Dr. Miller to give IRC summary of Department of State conferences attended in recent weeks • Washington trip planned by PAC • Meistersingers give concert • Editorial: Attend forums? • Senior class discusses Ruby and after-game record dance • Red Cross to organize • Juniors discuss bands • French Club to present dance Wednesday night in music studio • Thespians to discuss play • Dictionary of Folklore and Legend includes work of Dr. Phillips on Pennsylvania Dutch • Behind-scenes Dean handles transcripts, records dating from 1873, in routine work • Men reveal resignation toward draft situation • Alumnae back and Duryea\u27s got \u27em; Grads return in role of preceptresses • Coach Seeders drives Bruins toward coveted Middle Atlantic championship • Grizzlies win and lose in non-league contests • Bears edge Blue Hens for loop lead, 62-60 • Mermaids triumph over Drexel, 35-22 • Belles bag first over Bryn Mawr • Brodbeck I & II, Stine lead • Dr. Baker chooses poetry of A. E. Housman for readinghttps://digitalcommons.ursinus.edu/weekly/1558/thumbnail.jp

The Ursinus Weekly, February 12, 1951

New high set by B-list group as 106 qualify • Y schedules chats, conducts retreat • Paynter-Keller production scores hit in Curtain Club group presentation • Play contest in progress; May Day heads named • Alumna to speak at girls\u27 Color Day program Thursday • Eight enter Ursinus for Spring term • Forum to feature Indian editor at next session • Speak Easy title of Ruby show • TV auditions slated • 3 graduate school test dates released • Ursinus to enter competition in intercollegiate bridge • Dr. Miller to give IRC summary of Department of State conferences attended in recent weeks • Washington trip planned by PAC • Meistersingers give concert • Editorial: Attend forums? • Senior class discusses Ruby and after-game record dance • Red Cross to organize • Juniors discuss bands • French Club to present dance Wednesday night in music studio • Thespians to discuss play • Dictionary of Folklore and Legend includes work of Dr. Phillips on Pennsylvania Dutch • Behind-scenes Dean handles transcripts, records dating from 1873, in routine work • Men reveal resignation toward draft situation • Alumnae back and Duryea\u27s got \u27em; Grads return in role of preceptresses • Coach Seeders drives Bruins toward coveted Middle Atlantic championship • Grizzlies win and lose in non-league contests • Bears edge Blue Hens for loop lead, 62-60 • Mermaids triumph over Drexel, 35-22 • Belles bag first over Bryn Mawr • Brodbeck I & II, Stine lead • Dr. Baker chooses poetry of A. E. Housman for readinghttps://digitalcommons.ursinus.edu/weekly/1558/thumbnail.jp

Mercury Orbiter: Report of the Science Working Team

The results are presented of the Mercury Orbiter Science Working Team which held three workshops in 1988 to 1989 under the auspices of the Space Physics and Planetary Exploration Divisions of NASA Headquarters. Spacecraft engineering and mission design studies at the Jet Propulsion Lab were conducted in parallel with this effort and are detailed elsewhere. The findings of the engineering study, summarized herein, indicate that spin stabilized spacecraft carrying comprehensive particles and fields experiments and key planetology instruments in high elliptical orbits can survive and function in Mercury orbit without costly sun shields and active cooling systems

Book Reviews

Current Legal Problems 1956 Edited by G. W. Keeton and G. Schwarzenberger London: Stevens & Sons, 1956. Pp. vii, 275. $5.55 reviewer: David F. Maxwell =================================== Some Problems of Proof under the Anglo-American System of Litigation By Edmund Morris Morgan. New York: Columbia University Press, 1956. Pp. xii, 195.$3.50 reviewer: Charles T. McCormick =================================== Effective Drafting of Leases with Check List and Forms By Milton N. Lieberman Newark: Gann Law Books, 1956. Pp. viii, 974 reviewer: Robert N. Cooks =================================== The Law and One Man Among Many By Arthur E. Sutherland Madison: University of Wisconsin Press, 1956. Pp. ix, 101. $2.50 reviewer: Kenneth B. Hughs =================================== Proxy Contests for Corporate Control By Edward Ross Aranow and Herbert A. Einhorn. New York: Columbia University Press,1957. Pp. xxiii, 577.$15.00 reviewer: Jess Halstead =================================== Gibson\u27s Suits in Chancery By Arthur Crownover, Jr. Charlottesville: The Michie Company, 1955-1956. Vol. I, Pp. xxiii, 909; Vol. II,Pp. xv, 949. $45.00. reviewer: Walter P. Armstrong, Jr. =================================== Laissez Faire and the General-Welfare State: A Study of Conflict in American Thought, 1865-1901. By Sidney Fine Ann Arbor: University of Michigan Press, 1956. Pp. x, 468.$7.50. reviewer: Howard Jay Graha

Aerobic capacity, activity levels and daily energy expenditure in male and female adolescents of the kenyan nandi sub-group

The relative importance of genetic and socio-cultural influences contributing to the success of east Africans in endurance athletics remains unknown in part because the pre-training phenotype of this population remains incompletely assessed. Here cardiopulmonary fitness, physical activity levels, distance travelled to school and daily energy expenditure in 15 habitually active male (13.9±1.6 years) and 15 habitually active female (13.9±1.2) adolescents from a rural Nandi primary school are assessed. Aerobic capacity ([Formula: see text]) was evaluated during two maximal discontinuous incremental exercise tests; physical activity using accelerometry combined with a global positioning system; and energy expenditure using the doubly labelled water method. The [Formula: see text] of the male and female adolescents were 73.9±5.7 ml(.) kg(-1.) min(-1) and 61.5±6.3 ml(.) kg(-1.) min(-1), respectively. Total time spent in sedentary, light, moderate and vigorous physical activities per day was 406±63 min (50% of total monitored time), 244±56 min (30%), 75±18 min (9%) and 82±30 min (10%). Average total daily distance travelled to and from school was 7.5±3.0 km (0.8-13.4 km). Mean daily energy expenditure, activity-induced energy expenditure and physical activity level was 12.2±3.4 MJ(.) day(-1), 5.4±3.0 MJ(.) day(-1) and 2.2±0.6. 70.6% of the variation in [Formula: see text] was explained by sex (partial R(2) = 54.7%) and body mass index (partial R(2) = 15.9%). Energy expenditure and physical activity variables did not predict variation in [Formula: see text] once sex had been accounted for. The highly active and energy-demanding lifestyle of rural Kenyan adolescents may account for their exceptional aerobic fitness and collectively prime them for later training and athletic success